TI4200 Volt Mod?

[sysfailur]

I'm looking for a Ti4200 volt mod guide or some pictures or something. My card is topping out @ 305/600. Thank ya.

UPDATE 10.18.2002

LOOK NO FURTHER. VOLT MOD IS IN THE LINK BELOW!!

http://www.maximumoc.com/img/hardware/4200_volt_mod/final_volt_mod_info.jpg

[N8]

Can't really help ya w/ the mod, but out of curiosity...which 4200 do you have? I've currently got the Gainward, and its not a very good oc'r @ 310/570. The Abit is set to arrive at my house tonight...hope it oc's better :)

[sysfailur]

I've got an Abit and it hits 305/600.

[N8]

was hoping for more than that but either way, its better than this gainward...btw it took a CPU cooler on the GPU to get over 300MHz. I'll report back tonight what I get out of the Abit.

Thx for the info. And if you find a vmod, plz post it back here ;)

[sysfailur]

Originally posted by [N8]
was hoping for more than that but either way, its better than this gainward...btw it took a CPU cooler on the GPU to get over 300MHz. I'll report back tonight what I get out of the Abit.

Thx for the info. And if you find a vmod, plz post it back here ;)

This is stock cooling, your welcome, and I'm gonna continue to ask and look for that volt mod ;)

[Malecky]

Cool, nice to see that the Abit roxx, looks like I will be getting one as soon as I go to Italy, I can get it for 200$ there.

I will need the Voltmod too, and I hope we get some info in this forum..

[N8]

all i got to say about this abit is WOW. I got her tonight and right out of the box after working my way up i've hit 325/614! :)

330 locks, 615 gives a couple artifacts....amazing card...easily smokes the gainward. gonna mod the gpu cooler a little then and see if the core goes up any higher...but damn, great performance right out of the box.

edit: room temp about 73F.

[sysfailur]

Originally posted by [N8]
all i got to say about this abit is WOW. I got her tonight and right out of the box after working my way up i've hit 325/614! :)

330 locks, 615 gives a couple artifacts....amazing card...easily smokes the gainward. gonna mod the gpu cooler a little then and see if the core goes up any higher...but damn, great performance right out of the box.

edit: room temp about 73F.

Damn! My ti4600 hits 325 only! These little ti4200's certainly have lots of muscle behind them!

[N8]

Ur tellin me :)

Pretty sure what I'm gonna try next as far as GPU cooler mods...but undecided on ramsinks or not as of yet. Don't have any experience w/ ramsinks, so not sure what to expect out of them.

Gainward 64MB 4200 w/ VIVO max clock: 300/570 (CRORB on GPU)
Gainward 64MB 4200 w/o VIVO max clock: 310/580 (CPU cooler on GPU)
Abit 64MB 4200 w/ VIVO max clock: 325/614 (stock cooling so far)

That's w/ 3.5ns EtronTech chips on the Gainward, and 4ns Hynix on the Abit. Either those EtronTech's suck, or Gainward has some crappy circuitry on these boards....

Very happy w/ the Abit...I'd recommend it to others looking at the 4200's.

[Malecky]

Originally posted by [N8]
Ur tellin me :)

Pretty sure what I'm gonna try next as far as GPU cooler mods...but undecided on ramsinks or not as of yet. Don't have any experience w/ ramsinks, so not sure what to expect out of them.

Gainward 64MB 4200 w/ VIVO max clock: 300/570 (CRORB on GPU)
Gainward 64MB 4200 w/o VIVO max clock: 310/580 (CPU cooler on GPU)
Abit 64MB 4200 w/ VIVO max clock: 325/614 (stock cooling so far)

That's w/ 3.5ns EtronTech chips on the Gainward, and 4ns Hynix on the Abit. Either those EtronTech's suck, or Gainward has some crappy circuitry on these boards....

Very happy w/ the Abit...I'd recommend it to others looking at the 4200's.

You guys made me quite happy that I am getting this card, but the RAM doesnt look top, if it were only 3.6ns.

[N8]

no 2 card r the same...but I don't see you being disappointed w/ this card :)

[Malecky]

Originally posted by [N8]
no 2 card r the same...but I don't see you being disappointed w/ this card :)

Hehe, I know but a Ti4600 will do:D

Do we have a Voltmod yet? Maybe in some other forum?

I am looking forward to Sysfailures coldplates too:D

[sysfailur]

Originally posted by Malecky


Hehe, I know but a Ti4600 will do:D

Do we have a Voltmod yet? Maybe in some other forum?

I am looking forward to Sysfailures coldplates too:D

I'm drawing out the ti4200 dimesions as I speak, and the 4600/gf3 plates will be done next Friday.

[sysfailur]

What in the fsck!? Look at this review of a Visiontek ti4200...

http://www.beyond3d.com/reviews/visiontek/nvidia_gf4ti4200/index2.php

Look at the oc!! That is ludicrous.

[Malecky]

Originally posted by sysfailur
What in the fsck!? Look at this review of a Visiontek ti4200...

http://www.beyond3d.com/reviews/visiontek/nvidia_gf4ti4200/index2.php

Look at the oc!! That is ludicrous.

WTF? well I cant change my mind, cant get any other GF4 for 200$

oh edit I found this: " The Ti4200 was overclocked to 325/535MHz core/mem for the 1600x1200 + 4xAA + 8xAniso test to see how much more can be gained from overclocking :"

So... still a healthy GPU OC but the mem is realy not stunning.

[N8]

Yea, I saw this this morning and knew that memory oc had to be a typo, lol. Then I also saw what Malecky caught...and confirmed my assumption :)

[Malecky]

Originally posted by [N8]
Yea, I saw this this morning and knew that memory oc had to be a typo, lol. Then I also saw what Malecky caught...and confirmed my assumption :)

Well I still am hoping for 700DDR with serious chillin and a voltmod.

I did 520mhz Easy with the same RAM no HS on it with a R8500 if it were cooled it had been 540 which is a lot with just some Al on it.

[N8]

I've spoken to a fella on the ORB w/ the Abit @ 668MHz memory w/ merely ramsinks so I don't see your goal being out of reach ;)

Talking to this guy is one of the reasons I decided to go for the abit :)

[UaZa]

oh.. come on..
i need a ti4200 volt mod too ;P

bump :D

[Malecky]

Originally posted by UaZa
oh.. come on..
i need a ti4200 volt mod too ;P

bump :D

Can someone give me the PCB layout or the chip that controlls the voltage numbers? we can figure it out aurselves or just write to Abit:D

[UaZa]

Originally posted by Malecky


Can someone give me the PCB layout or the chip that controlls the voltage numbers? we can figure it out aurselves or just write to Abit:D
i think sys have some pics..

and i dont think abit will give us the key.. lol
:D

[Malecky]

Originally posted by UaZa

i think sys have some pics..

and i dont think abit will give us the key.. lol
:D

abit is very cooperative to say the least. Well it would be a longshot.

Sys can you tell me is it a controller or is there a PCB design involved like the Radeons. If its a chip it is simple like pie.

[sysfailur]

Originally posted by Malecky


abit is very cooperative to say the least. Well it would be a longshot.

Sys can you tell me is it a controller or is there a PCB design involved like the Radeons. If its a chip it is simple like pie.

This pic of the back of the board might help:

http://www.maximumoc.com/img/hardware/abit_4200/back.jpg

[Malecky]

I see something interesting in the upper left corner of the card, might be a vital voltage regulator.

And the bigger chip over the Siluro print... but I dont know anythin maybe write down the markings on that chip and search the net, if you insert the chip name in google for instance you never know what comes up.

Gimme a top shot if you have time Sys.

[DDTUNG]

Looks like the Ti4200 uses two SC1102 controllers, one for the Vgpu and one for the Vmem. From the picture alone it is difficult to tell which is which. Can someone measure the resistance between pin 11 and ground for both ICs with the card unplugged?
Also need someone to find the caps to measure the voltages from(one leg of the cap is ground, the other is the voltage you want to measure).

Be careful, don't fry anything.:)

DDTUNG:cool:

[sysfailur]

Originally posted by DDTUNG
Looks like the Ti4200 uses two SC1102 controllers, one for the Vgpu and one for the Vmem. From the picture alone it is difficult to tell which is which. Can someone measure the resistance between pin 11 and ground for both ICs with the card unplugged?
Also need someone to find the caps to measure the voltages from(one leg of the cap is ground, the other is the voltage you want to measure).

Be careful, don't fry anything.:)

DDTUNG:cool:

The chip markings are...

SC1102CS
0217
G29025-2

Both chips are the same, on the top left and top right.

[DDTUNG]

Yes I have identified the ICs from the pic. Need someone to measure the values I requested before Vgpu and Vmem mods can be worked out.:)

DDTUNG:cool:

[sysfailur]

Originally posted by DDTUNG
Yes I have identified the ICs from the pic. Need someone to measure the values I requested before Vgpu and Vmem mods can be worked out.:)

DDTUNG:cool:

I was just verifying ;) Also I'm gonna see if I can borrow my neighbors volt reader thingy.

[Malecky]

what kond of an a OC are you without a multimeter I have more that three:D :D

[sysfailur]

Originally posted by Malecky
what kond of an a OC are you without a multimeter I have more that three:D :D

Well I don't have one... but I do have a laser temperature reader!! :P

[Malecky]

Originally posted by sysfailur


Well I don't have one... but I do have a laser temperature reader!! :P

Sweeet:D

[Bravo]

Originally posted by sysfailur


Well I don't have one... but I do have a laser temperature reader!! :P

And you call yourself an overclocker :rolleyes: :p

From the looks of it, i'd say the IC closest to the VGA connector regulates Memory Voltage, while the IC on the opposite end of the card regulates GPU Voltage.

[Bravo]

Originally posted by Majestik


And you call yourself an overclocker :rolleyes: :p

From the looks of it, i'd say the IC closest to the VGA connector regulates Memory Voltage, while the IC on the opposite end of the card regulates GPU Voltage.

Got a 64mb Siluro Ti4200 on the way guys :)

[Malecky]

Jup looks easy but I'm not 100% so till DDtung says so I am not gonna do anything.

whi hasent anyone modded this card before?

[sysfailur]

Originally posted by Malecky
Jup looks easy but I'm not 100% so till DDtung says so I am not gonna do anything.

whi hasent anyone modded this card before?

Who knows! It's gonna be really good when it's OC'ed ;)

[AKRedneck]

As long as were on the subject of volt mods, does anyone happen to have the pictures or a descent write up on how to do the vmods on the ti4600. There were some pics over at icrontic from macci on this but it seems like those pics are unavail on the server now...

i would be just pleased as punch if someone could post those pics or let me know where this info is avail..

Thanks.!

[DaGooch]

Originally posted by AKRedneck
As long as were on the subject of volt mods, does anyone happen to have the pictures or a descent write up on how to do the vmods on the ti4600. There were some pics over at icrontic from macci on this but it seems like those pics are unavail on the server now...

i would be just pleased as punch if someone could post those pics or let me know where this info is avail..

Thanks.!

You can possibly Private Message Macci and have him post the pictures here. ;)

[sysfailur]

You just need to know where to look :P

http://www.solidhardware.com/macci/gf4/gf4_vgpu.jpg
http://www.solidhardware.com/macci/gf4/gf4_vmem.jpg
http://www.solidhardware.com/macci/gf4/gf4_voltages.jpg

[AKRedneck]

You da man sys!!:cool: Those were exactly what I was lookin for.. uhhh, perhaps my search wasn't quite 'exhaustive' as it could of. :o Now all i need is one of your coldplates..:D

[N8]

DDTUNG,
I have this card but this Auto-Ranging Tester (http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F008%5F002%5F005%5F000&product%5Fid=22%2D802) is all I have for taking measurements. I also must admit that I'm not too familiar with it nor am I very knowledgable when it comes to working with electronics, lol.

If noone else has already given u what u need and I can do it with this meter, please let me know how. :)

[DDTUNG]

That's work just fine.

Let's get you started with measuring the resistances. First make sure to unplug the card from the mobo. Look for pin 11 by starting with pin 1 next to the dot and counting anti-clockwise. Set your meter to read ohms. Put the red lead on pin 11, and the black lead on the mounting plate of the card. Your meter should give you the correct reading. Repeat with the other IC, then postt the readings here. I will then you detailed instructions for reading the voltages.:)

DDTUNG:cool:

[sysfailur]

Mwaha me to the rescue. I borrowed my neighbors ;)



Ok the top right one gives me a Ohmage of 105.
The top left one gives me a Ohmage of 124.


Lemme know what I have to do next and I shall oh master :)

[N8]

i also got 124 for the top left however got 102 for the top right :)

seems close enough!

sry would have replied earlier but I've been benching ;)

[sysfailur]

I just rechecked the top right and now I'm getting 104. Heh.

[DDTUNG]

Thanks guys. Now get yourself two 5k VR. Solder one VR between pin 11 of each SC1102 and ground(any point that reads 0 ohm between it and the mounting bracket). Adjust the VR to 20 times the resistance you measured before(20x124 and 20x104). Assuming that you have found the capacitors where you can measure the Vgpu and Vmem, you will now measure slightly higher voltages at those same capacitors. Turn the VRs slowly decreasing the resistances and watch the voltages go up. Your maximum voltage depends on your cooling on the core and memory.

Take your time and go slowly. Don't fry anything. When in doubt, stop and ask for clarification.

DDTUNG:cool:

[Malecky]

Thanx DDTUNG Yu Rulllleee:banana:

Just have to get the card now:banana:

edit: Anyone have a spare Tec and how big should it be power wise.I can get one 156W used for 50$ but I think its a bit of a overkill Tec;)

[spaceboy]

is it possible to find the mod for a Gainward Gef 4 4200 pleaze?
or have i to sell it and got me a Abit siluro? :D
Thanks!

(searching for photos)

[N8]

had 2 of them gainwards b4 i got the abit. do urself a favor, sell it and get the abit, lol :)

[sysfailur]

Originally posted by DDTUNG
Thanks guys. Now get yourself two 5k VR. Solder one VR between pin 11 of each SC1102 and ground(any point that reads 0 ohm between it and the mounting bracket). Adjust the VR to 20 times the resistance you measured before(20x124 and 20x104). Assuming that you have found the capacitors where you can measure the Vgpu and Vmem, you will now measure slightly higher voltages at those same capacitors. Turn the VRs slowly decreasing the resistances and watch the voltages go up. Your maximum voltage depends on your cooling on the core and memory.

Take your time and go slowly. Don't fry anything. When in doubt, stop and ask for clarification.

DDTUNG:cool:

Weee, alright Imma order some right away!

[spaceboy]

Originally posted by [N8]
had 2 of them gainwards b4 i got the abit. do urself a favor, sell it and get the abit, lol :)


your abit oc is without mod? :eek:
yep i'm just trying to sell it ;):D
but i thinks with a mod i can do a good oc on this?


you oc with gainwards?

[N8]

332/627 is w/o mod...stock cooling w/ a low cfm 80mm blowing up on the card and one blowing down on the card....no ramsinks. i wanna measure some temps and stuff before i even think about vmod :) been busy!

[spaceboy]

good ;)
here i've got a 32°C ambient :(

i'm gonna put a WB on the gef ;)

thanks

[sysfailur]

N8, you've got one killer Abit. A volt mod on it is going to OWN!

[N8]

sysfailur,
thx :) I just have to think up what I want to do as far as cooling the core. I have an idea, and it will be only air-cooled btw.

Anyway, I'm doing alot of other testing right now, not video card related, so it might be till next week till I get to messing with it. I'm prolly gonna ask someone like cabojoe to mod it for me if i do so, cuz I'm not too handy w/ the solder and he's a good bud :)

[LardArse]

Hi guys. I have an Innovision Tornadoe Geforce 4 Ti4200 128 mb, using Samsung 4ns rams. Havent gotten around to overclocking it yet, but have done some preparation for voltage mod with help from this thread.
My card is very similar to the Abit's. With reference to Sysfailur's pic, it has the same SC1102CS chip at the right hand side. And like you guys, I get around 104 ohmage from pin 11. However, it is lacking the SC1102Cs chip at the left hand side. Where the chip should have been, there are metal contact point traces like someone forgot to solder on the chip. Of course, I don't think someone actually forgot. Now I think I've found where to measure the voltages from and I think its the same with the Abit.

This measures the memory voltage I think, and it gives me ~ 3.25 - 3.27v
http://bravo.ausgamers.com/lardarse/lard/back.jpg

And this measures core I think, it gives me 1.66v.
http://bravo.ausgamers.com/lardarse/lard/front.jpg

I'll be getting a VR to solder to pin 11 to see if it increases voltages. I think this right hand one controls memory voltage. Now with regards to core voltage, I dunno how this board controls it since I'm lacking one SC1102CS chip. Could the memory and core be sharing the same chip? Can't seem to find any other chips. There's one SC3.3 chip infront near the core but the Abit board seems to have it as well. Any ideas?

[sysfailur]

Originally posted by LardArse
Hi guys. I have an Innovision Tornadoe Geforce 4 Ti4200 128 mb, using Samsung 4ns rams. Havent gotten around to overclocking it yet, but have done some preparation for voltage mod with help from this thread.
My card is very similar to the Abit's. With reference to Sysfailur's pic, it has the same SC1102CS chip at the right hand side. And like you guys, I get around 104 ohmage from pin 11. However, it is lacking the SC1102Cs chip at the left hand side. Where the chip should have been, there are metal contact point traces like someone forgot to solder on the chip. Of course, I don't think someone actually forgot. Now I think I've found where to measure the voltages from and I think its the same with the Abit.

This measures the memory voltage I think, and it gives me ~ 3.25 - 3.27v
http://bravo.ausgamers.com/lardarse/lard/back.jpg

And this measures core I think, it gives me 1.66v.
http://bravo.ausgamers.com/lardarse/lard/front.jpg

I'll be getting a VR to solder to pin 11 to see if it increases voltages. I think this right hand one controls memory voltage. Now with regards to core voltage, I dunno how this board controls it since I'm lacking one SC1102CS chip. Could the memory and core be sharing the same chip? Can't seem to find any other chips. There's one SC3.3 chip infront near the core but the Abit board seems to have it as well. Any ideas?

Good info! I'm not sure about your missing chip dilema... I hope someone here can help ya! Perhaps a high res pic of your card might help us identify a chip?

[LardArse]

Found a 100k ohm VR lying around. Set it to around 2000 ohms and soldered it to pin 11 and ground.
Turns out the right hand chip controls the GPU voltage, and it raised my default 1.66v to 1.74v. I'm not gonna turn it higher until I get better cooling. (peltier/watercool :) )
So now where's my memory voltage regulator?? I don't have a digicam ATM, but the place where you have your second SC1102 chip is bare for me, but has metal contact points just set nicely almost as if someone forgot to solder on the chip. Do you think soldering a VR to the point which would coincide with pin 11 would help up my memory voltage?
Also, do you think my Samsung 4ns rams would overclock better with a voltage higher than the 3.25v I'm measuring? What voltage are they supposed to run anyways?

[spaceboy]

DDTUNG i need help :);)

http://www.gzeasy.com/Articlephoto/2002-may-mid_level-3d-graphics/gainward_ti4200_128mb/3d.jpg


Thanks in advice

[spaceboy]

other detailed photos in here!



http://www.gzeasy.com/Articlephoto/2002-may-mid_level-3d-graphics/gainward_ti4200_64mb/front.jpg

http://www.gzeasy.com/Articlephoto/2002-may-mid_level-3d-graphics/gainward_ti4200_64mb/back.jpg

[sysfailur]

Originally posted by spaceboy
DDTUNG i need help :);)

http://www.gzeasy.com/Articlephoto/2002-may-mid_level-3d-graphics/gainward_ti4200_128mb/3d.jpg


Thanks in advice

Well your card looks exactly the same as the Abit board... you have both voltage chips. So do what has been previously mentioned. (You still might want to check the Ohmage of the 2 pins mentioned before.)

[LardArse]

Sysfailur, does your Abit come with 4ns rams? How high could you get them with stock cooling w/o ramsinks?
Myine only goes up to 510 without artifacting :(

[sysfailur]

It does come w/ just 4ns, and I got mine to 600 before it locked up. With more cooling I think I could get it higher as I didn't get any artifacts.. it just locked up.

[spaceboy]

k i've to measure the ohmage between pin 11 of each SC1102 and ground ?

but i don't understand where to measure the Vgpu e Vmem :/
(it's a bit difficult to me to understand technical english)


10x!

[LardArse]

Hi. If your card is similar to mine then here should be the points to measure, + end of meter to + of cap and - ground.

http://bravo.ausgamers.com/lardarse/lard/fronter.jpg

There should also be pins from the same cap behind the card so you can measure from there as well.
My Inno3d card is good for its price, but definitely not overclocking friendly.
It lacks the SC1102 controller and some other chips that regulate memory voltage, so I can't even tweak the voltage. I even soldered a variable resistor to the bare metal contact point where the pin11 of the chip is supposed to be but it didn't do anything. Many parts that are present on other boards are missing on this one, probably to cut cost. I can only change the core voltage with this card. And my stupid memory produces artifacts above 520 mhz, without any ramsinks on.
Well, at least I have an A3 core which is supposed to be better than an A2.
I like to play games at high resolutions. How badly will this bad memory overclock affect me?

[spaceboy]

anybody has done the mod yet? :)

it's going to be my first mod on a vga card..

is it risky to measure the vgpu and vmem?

Anybody could tell me which fixed resistence to put instead of the pot?

i'm gonna have a wb on the chip ,not peltier..and ramsinks !so.. not much voltage :D

:)

[spaceboy]

:(

[LardArse]

Hi Space.
If you've read my post, I've done the measuring without any problems and the mod to the core which is the right hand chip without any problems as well.

[spaceboy]

Hi lord :)

yep i've read but i don't feel so confident :/

if i sold a 2k resistor on pin 11 on the Sc1102 i've 1.66@1.74v
Should be right if cooled by a normal WB ,no chilled water?or is better 1.8v ?..

the vmem... to me seems not so easy
i've read here some problems http://www.xbitlabs.com/video/visiontek-gf4ti4400/
with the vmem.. the layout is so different the this one is enough?

my friend told me that measure the V it's quite risky.. and i'don't wanna fry the 4200 so early :D
was it wrong?

a mod like this how it works? http://www.xbitlabs.com/video/visiontek-gf4ti4400/mem-volt3-f.jpg


all i need is some who has done the mod and give some advice



thanks ;)

[sysfailur]

I haven't had the time yet to do the mod. I'm working on it. Just rearranged my computer area.

[LardArse]

I'm sorry, the memory voltage measurement isn't where I said but here.
http://bravo.ausgamers.com/lardarse/lard/fronting.jpg
I've soldered a VR to the left hand chip and it gives me 3.31v at maximum resistance and slowly upped the voltage as I reduced the resistance. Had it up to 4.06v, but it seems voltage doesn't affect the ram overclock that much.

[LardArse]

Be careful now. I just fried my rams with too much voltage at an artifacting overclock. I was running at 3.95v, and then decided to up it a bit more, but over tweaked the pot and system shut down. A boot up gave me a totally crapped screen. Thats with Samsung 4ns. So watch your memory voltage! 3.6-3.7v is the max I would want to go from now on.

[sysfailur]

Good advice, thanks. I'll be sure to be careful when doin that ;)

[N8]

What cooling was on that memory when u fried it, lardarse? :)

[LardArse]

They were ramsinked before I fried it. I think it must have gone up to perhaps 4.5v when I fried it. It was an accident that I overtweaked the pot.
Anyways, changed it for a new card and now I'm running just 3.31v memory voltage, default's around 3.26v. I dont know why tweaking the pot doesn't change the voltage for this card. Its the same pot I was using on the fried rams. Perhaps it got damaged when the ram fried. Anyways, this just gets me around 610 mhz artifact free. For the core voltage, I tweaked with another pot from 1.66v to 1.85v. Now I'm cooling the core with a watercooled 80 watt peltier. This gets me around 333 mhz core without locking up in 3D. Think this core is rather old. Its a 0152 A2 NV25 core. Think its built in 2001 week 52. I have had a better core once that was A3, but I sold the card.

[2xD]

My SUMA card uses these SC1102CS chips also, and they're placed in the samed position as on the Abit, so I guess I've found what I've been looking for so long. Only have been here one day, but I already love this forum :p

I'll be measuring the resistance in a few minutes, and if I get the same readings as on the Abit, I'm off to get me some VR's :)

This SUMA card owns btw, it does 310/655 out of the box, carrying 3.3ns Hynix chips.
Watercooling is due by next month, so we'll be seeing a frying SUMA pretty soon ;)

[LardArse]

3.3 ns!
I'd be happy just to settle for 3.6 ns!

[2xD]

OK, measured out the resistance, and I'm getting 111 for the top right one (or was it left? :)) and 102 for the other.

Didn't have anymore time to get to the electronicsstore, so them VR's will be something for tomorrow I hope.

Grrreat :)

[2xD]

Low folks,

by tuesday I should have my new SUMA GF4, and off course I'm going to Vmod it.
My previous attempt having killed my GF4 wont stop me :)
But, I want some explanation, basic explanation actually.
See, I really suck at electronics, and I mean that I don't even really know the basic stuff.

So, the card I'm getting is a 128MB SUMA Ti4200, it's on 8-layer PCB and carries 3.3ns BGA ram, according to the guy from the store I got it from, these cards do 690~700Mhz memclock on average. So I won't be touching the Vmem for now.

But what I wanna know is how to connect everything for the coremod in exact words.

What I assume is that I solder on a wire to the pin needed on the regulator (don't know which regulator it uses yet, but I think the SC1175), that wire goes to the middle leg of the potmeter (I use 4.7k pots), then another wire from the leg you measured out to ground. The pots set to 0 ohm, but I know now that I have to set them to max resistance, so 4.7K :D

Is it correct this way, or not?
Don't wanna fry another GF4, really don't :)

[dmitriyaz]

where did you get that card, and how much?

[2xD]

Originally posted by dmitriyaz
where did you get that card, and how much?

www.ldlc.fr
313e to my doorstep.

Noone that wants to answer my question(s)? :(

[dmitriyaz]

sorry for the annoyance, but how much is it in $$$?
and do you know if they ship to the US?

[LardArse]

The wire msut be soldered to the correct leg of the chip and the other end to your resistor. You must also have a wire from the other free leg of your resistor that runs to ground. Thats it basically.

[2xD]

Originally posted by dmitriyaz
sorry for the annoyance, but how much is it in $$$?
and do you know if they ship to the US?

one Euro is 0.99$, so it's 315$ :rolleyes: (lotta money for a Ti4200 huh? :))
And no, they don't ship to the US, not as far as I know at least.

LardArse, thnx for the explanation, makes me feel a bit more confident :D

[qwerty57]

Can you guys help me with my volt/mod. Ok I have a Ti4400 and it uses the sc1175 for GPU/volt. and it is at 123 ohms my question is that before you stated that start your 5k pot at 20x that number why is this like turning the resistance off totally untill you turn the pot to where you want it? also if I connect a 5k pot set it at 5k will it affect my 1.66v alot or not at all..thanx

[LardArse]

Just set the 5k resistor at ~ 5k and after soldering, slowly decrease the resistance and check the voltage consecutively.

[X Men SS]

LardArse , what resistance do you use for the VMem ???

[LardArse]

I think I started with around 2k, and that gave around 3.34v and then slowly went down. But for 4ns rams I have, it doesn't help much at all.

[spaceboy]

if i have a SC1102CS chip why don't do this mod?

http://news.hwupgrade.it/immagini/220702_chip1.jpg
soldered a 1kOhm resistor to pins 11 and 14 of the SC1102CS chip:So, the R8/R7 ratio (in the typical application circuit scheme) changed and the regulator's output voltage grew from 1.66V to 1.81V.


and this for sc1175csw

http://www.xbitlabs.com/video/visiontek-ti4600/volt-1.jpg

Vout1 was increased with the help of R14 720Ohm resistor, which was soldered to pins 18 and 20 of the controller chip.
The graphics memory voltage increased up to 3.09V

[sysfailur]

Might wanna use VR's though, not just resistors ;)

[spaceboy]

Originally posted by sysfailur
Might wanna use VR's though, not just resistors ;)

k but instead of solder a Vr to the pin and ground..
ins't better to solder to pin from pin lke these?


can i fry the card if i test the vgpu with the pc on? :(

[sysfailur]

Well I wouldn't directly solder the VR on.... use some wire. ;P

[SKATAN]

I have a Msi ti4200 and te pcb seems to be the same as abit siluro ti4200


but the regulators have the same size but are

sc2602s
0219
g28995-2


an i cant seem to find the pdf for these at semtech maybe they are just too new :(

does anyone know where to find these?

[LardArse]

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=1355

[SKATAN]

thankz for the reply


so i guess it´s the same pin11 :)


what was your gain from 1.66v to 1.81v ?


and the gain from the crappy stock cooler to peltier ?

:)

[LardArse]

No idea. Went straight to pelt before overclocking the core. :)
Went up to 2.1v and the max I could manage was 345mhz core that seemed stable but didn't test it that long cos my mobo/PSU can't keep up the high voltage and shut off. Right now its 340 Mhz at 1.96v.
Tell me how much yours overclock, especially interested to find out about your memory overclock. 600 memory works fine for a while but turn up the resolutions + FSAA and stuff and artifacts start appearing. Only 580 artifactless for all situations. Be careful with the memory voltage because I fried my previous GF4's ram with too much voltage.

[SKATAN]

it does 625 without a single artifact

hynix -3.6

the gpu is crap 297 for 24/7 usage

[LardArse]

Well you have better luck, mine's 4ns Samsung :(

[spaceboy]

Originally posted by SKATAN
it does 625 without a single artifact

hynix -3.6

the gpu is crap 297 for 24/7 usage

Hi ;)
did you do the mods Skatan?

[RichBa5tard]

Well, I just received my GF4 Ti4200 today, and it seems to be performing very well.

Brand: "Xelo" (Cheapest I could get in EU: 150$)

Core seems to go up to 330 with stock cooling. 3D marks craps out after a while though: cooling is utter crap and GPU get's really hot. I'm going to slap op my DD WB on in a few minutes. Keep you guys posted. :)

Mem seems to be average: 4ns Hynix, does 580 without artifacts and run hot.

[SKATAN]

Originally posted by spaceboy


Hi ;)
did you do the mods Skatan?


nope :)

i´m thinking if it´s worth the risk :)

i moded my previous gf3 (non ti) and the gains where great

20 mhz on gpu and ram

the ti´s dont seem to gain that much with vmod , only extreme cooling



I just wish that there was a good vmod to the gf4 ti4200 ram as there was for my EX gf3

and the gf4 gpu gets very hot without the mod , and vmod needs very good cooling


if i was convinced that it would give me 20+ mhz on the gpu setting the voltage to 1.74v i´d do it without thinking just for benching :)

(i have pretty good soldering skills :) )

[spaceboy]

i've got 105 ohm for the GPU and 113 for the DDR

maybe my ram is undervolted a little by default?


is the R8 that changes? 105 gives 1.65 and 113 around 3.3v? :confused:

[sysfailur]

Well it's been a while, but Imma finally get around to doing this volt mod :P I'll let everyone know what I get naturally. Should have results in under a week.

[UaZa]

My XFX ti4200 arrives tomorow.. ;p

Zack, take a lot of pics and write a review man! :)

Btw.. what are good fixed values to the core & mem? for a watercooleD core and for a 85w tec ;p

[eva2000]

my 64MB Leadtek GF4 Ti4200 TD at default voltage does 313/613 on my P4 1.8A on P4S333

[macci]

I happend to grab one of these Abit Ti4200 64MB 4ns cards for the time being (killed my ti4600 and waitin for replacement). obvioulsy I had to test if its anygood ;)

stockOC => 307..310 core / 621 mem
vmodded (1.90V GPU, 3.93V mem) and CPU cooler on GPU and ramsinks on memchips it runs 3dmark at 333/702 (would probably run at 715 but w/ artifacts) ;)
over 700MHz for 4ns ram is pretty good result I think :D
http://service.madonion.com/compare?2k1=4269359

For everyday usage I lowered the GPU voltage to 1.75V and Vmem to 3.65V and its running at 320/650 now.

[spaceboy]

Originally posted by macci
I happend to grab one of these Abit Ti4200 64MB 4ns cards for the time being (killed my ti4600 and waitin for replacement). obvioulsy I had to test if its anygood ;)

stockOC => 307..310 core / 621 mem
vmodded (1.90V GPU, 3.93V mem) and CPU cooler on GPU and ramsinks on memchips it runs 3dmark at 333/702 (would probably run at 715 but w/ artifacts) ;)
over 700MHz for 4ns ram is pretty good result I think :D
http://service.madonion.com/compare?2k1=4269359

For everyday usage I lowered the GPU voltage to 1.75V and Vmem to 3.65V and its running at 320/650 now.


Great macci ;)

could you mesaure the resistance of the pots on the two pots?

and please post some photo of the mod?

thank you ;);)

[macci]

Im using 1kohm VRs for both GPU and MEM. That is pin 11-14 on SC11012

Vgpu:
1kohm => 1.75ish
350ohms => 1.9ish

Vmem 800ohms => 3.65ish

I'd take a pic if I had a digicamera in here.

[UaZa]

Pics ;]

Ill vmod mine this week
she is doing 337/635
85w pelt on the core

[Bravo]

Originally posted by macci
Im using 1kohm VRs for both GPU and MEM. That is pin 11-14 on SC11012

Vgpu:
1kohm => 1.75ish
350ohms => 1.9ish

Vmem 800ohms => 3.65ish

I'd take a pic if I had a digicamera in here.

macci, got a couple of questions for you.
1. Whats a safe voltage for the 4ns package memory? (i want to push it, but not push it so i kill it).
2. What cooling did you use on the memory?
3. Can you damage your GPU with 1.9v ?

Also, my leadtek does 351/657 stock, can i expect any sort of increase when i use a Vmod?

[heilmery]

I have had my abit ti4200 now for about a week and a half and let me tell you i could not be happier with this card. My max overclock now is 327/662 looped 3dm2k1 20 times and no crash.

I am looking to do this voltmod as i believe i can get this card up to 350/700+ on air. Right now all i have done to the card is as3 on the core with stock hsf and memsinks pure copper home made my self that i took off my gf2ultra. Love this card.

Here is my compare on mado.
http://service.madonion.com/compare?2k1=4333893

[NextJin]

I just ordered the Abit Ti4200 from Axiontech.com and hope to get a descent speed increase with it over my o\c'ed Ti200 GF3. About how many fps extra will I get in the avg game with this over my Ti200? Im mainly waiting for the Omen.

Thanks

[spaceboy]

Originally posted by heilmery
I have had my abit ti4200 now for about a week and a half and let me tell you i could not be happier with this card. My max overclock now is 327/662 looped 3dm2k1 20 times and no crash.

I am looking to do this voltmod as i believe i can get this card up to 350/700+ on air. Right now all i have done to the card is as3 on the core with stock hsf and memsinks pure copper home made my self that i took off my gf2ultra. Love this card.

Here is my compare on mado.
http://service.madonion.com/compare?2k1=4333893


Nature first LOD4, Car LOD6, Drag&Lobby LOD3. These new dets let me overclock higher and give me the greatest results i have ever seen. Thanks nvidia.


how to have different lods in the test??

[X Men SS]

Go to "selected tests" and uncheck everythink exept Nature , then run benchmark with the LOD settings you like , then close the window which tells you that you don't have enough tests for result blablabla , and check the next game test with another LOD setting (of course uncheck Nature) run bench ... and s.o. ... when you have done all game test no matter in what order you'll get a score ...

[UaZa]

Please.. i NEED pics..someone who did the vmod post pleaseeeeeee^

xfx ti4200 64mb 4ns



:D

[gooFly]

Hi,


I got a PNY GF4 Ti4200 and was wondering if anyone knows a way to volt mod it?

The back side got 3 small chips:

1st.
P22SG
74ACT08
data sheet (http://www.fairchildsemi.com/ds/74/74ACT08.pdf)

2nd
TL431C
21M
A754
data sheet (http://www.semiconductors.philips.com/acrobat/datasheets/TL431CX.pdf)

3rd
51031
74AI
data sheet (http://www.onsemi.com/pub/Collateral/CS51031-D.PDF)


I know I had an own thread for this, but it kinda died. So I decided to see if I would get more answers here

gooFly

[UaZa]

just did the core vmod..
works fine... gonna do some real benchs this night.. now my ambient temps are not helping ;)

so far @350 1.86v

edit: update - 355 for nature and 350 for others
1.9v

http://www.overclockers.kit.net/15375.jpg

[UaZa]

yeww :]
360 on the core now ;}

15439 http://service.madonion.com/compare?2k1=4420375

i need another 5k vr!! ahhh ;p

[X Men SS]

OK , I've made a summary pic which contains the VMods with the values which macci has for everyday use (what do you think about it) :

[X Men SS]

I've made a smaller version (125KB) ... :)

[UaZa]

i used 2 5k..
one 5k vr for memory, other for gpu..

[X Men SS]

UaZa ,

What was your max memory o/c before and after the mod :) ???

[Marci]

Well, I just got my Leadtek Ti4200 A3-core MyVIVO 128Mb... 4ns chips on it... got me waterblock fitted & ramsinks...

Dunno what codes mean what on these buggers...
Ram is Samsung 205 TC40 (4ns assumption?)
Core is Q13278.1 0210A3

Have gone for the OCPC Atlantis Geforce4 Block as I need to do a review on it anyways, and just slapped on the Thermaltake Blue-SPikies for Ram cooling... am gonna seal em up and turn em into waterblocks when I get chance.... set it all up on a separate loop to my cpu.... sharing same 15-pint res, but using separate pump & radiator...

So, voltmods here we come!

[Marci]

Er... and forgot to max it out before puttin the blocks on so I have NO idea about it's stock scores... also, everyone's on about LOD3 - 7 etc, but all the software I've got doesn't give those figures... it goes from -0.3 to +0.3 or summat... what r ppl using to tweak these things!? Tried powerstrip and rivatuner but both give same LOD figures... am currently using Det40.71...

[X Men SS]

Hmm, I use RivaTuner 2 RC12 for tweaking and overclocking and got zero problems so far (with both - Det40.52 and Det40.71) :confused: ...

BTW what are the highest clocks that you manage to get from this Leadtek ? My Asus clocks only @ 317.3/621 watercooled+ramsinks, stock voltage .

[almus!]

well, well, well...

I think it is now necessary to summarize the findings of this fantastic thread...

I think everybody here is interested in Vmodding the ti4200, but the procedure is still not clear.

I'll try to summarize it and if I got it wrong or if my english is crap, please correct me! Bear also in mind that I don't know anything about electrical and electronic parts...

1) we all need to buy two 5K POT and some wire...
2a) the points to be used on the POT are the central one and one of the other two. we sold some wire on these 2 points.
2b) we should set them @ 5k using the voltmeter

3) we should take off the card from the PC
4) we should measure the values of the SC chips resistance using the voltmeter on pin 11 and ground
5) we should measure the voltages using the voltmeter on the "round things" reported in the pictures above

6) we should solder the wires of the POT to pin 11 and ground on each of the 2 chips.
7) we measure again the voltage.
8) we go up with the voltage using the pot till when we are satisfied.

now, it is VERY inportant, for a complete ignorant like me, to know if each measurement can be done with the pc on or it should be off....
please correct me if i am wrong!

[Goldlocke]

hehe. i just upped the Vmem too fast!
i went up in little steps, but the Vmem i measured stayed at 3,45V all the time!? probably i measured at the wrong cap?

now my card gives me weird colored blocks in DOS and windows - so take care! :D

now my questions:

1. lardarse, could u plz post your pics of the RIGHT caps where to measure the Vgpu and Vmem? your links are somewhat broken.
2. where did u connect the ground side of the VR to? i connected them both to the caps where i measured the 1.66V Vgpu. was that wrong?

[Goldlocke]

thx!

[UaZa]

yes..this is the right one.

[sysfailur]

Some pics for you goons..... :P two 5ks, set @ (20x124 - top left, and 20x104 - top right). Hope this clears things up.

http://www.maximumoc.com/img/hardware/4200_volt_mod/overview.jpg

http://www.maximumoc.com/img/hardware/4200_volt_mod/top_right_chip.jpg

http://www.maximumoc.com/img/hardware/4200_volt_mod/close_up_top_left.jpg

http://www.maximumoc.com/img/hardware/4200_volt_mod/close_up_top_right.jpg

[Goldlocke]

hehe :rolleyes:
thx, sysfailur! now i know where to measure Vmem ;)
But i have to wait for my 4200 to return from RMA (if so!)... :D

[aarion]

is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.

[UaZa]

Originally posted by aarion
is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.
what is your chip?
if its SC2602S & SC1102CS thats ok

[sysfailur]

Well my "stability testing" included running game 4, as it's the longest 3dmark bench.

I just put windows in my comp, and everything is totally fresh. After much voltage tweaking I've come to 325/695 as my highest bench-worthy OC. 330/700 didn't work... but I think it's just the core not wanting to go higher. Looks like I got a pretty shafty core :\ The voltages were 1.85v on the cpu, and the ram was 3.7v.

For now, that's as high as I'm going to go. I'm just pleased everything works! I will do more thorough benching with it when it's colder in this room and I have a fan blowing on the ramsinks. Temperature wise, the ramsinks were @ 30C, and the back of the gpu was @ 51C. Those were right after the bench was completed. But hey, 695 is pretty smokin aint it? :P

[sysfailur]

Originally posted by aarion
is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.


The two wires that come off, where I have them labeled, get a multimeter and hook it up to the wire leads. Put it on V ::: 20.

[sysfailur]

pics: http://www.maximumoc.com/img/hardware/4200_and_kd7/

[aarion]

sorry, i'm really noob on this v-mod thing. there are so many wires i also don't know which is which. Pls explain, thank you.

[aarion]

and can i use a 10k variable resister?

[Goldlocke]

aarion, yes u can. just be careful to not turn the resistance down too quickly!

[aarion]

alright, i think i'll go back and try......

[Dirty_Punk]

sorry, but i don't understand one thing... can i get the vgpu and vmem value with the videocard off from pc or it must be while pc working???

and in this case, can someone tell me how i must set the resistor for gpu & mem to get 1.85 & 3.5? or a formula to calculate it without measure, tnx! :)

PS: my abit do 355/670 with a wb gpu 3° water and no mods yet.. trying to get at least 370/700 with 80w pelt and 3° water & voltmod, and it's an A2 core!!!! :eek:

[N8]

Dirty_Punk,

I can answer the first part of your question thanks to DDTUNG.
Yes, the card needs to be in the PC and the PC needs to be running to measure the voltages. Just be careful when probing ur meter around in your case while the PC is runnin ;)

[Dirty_Punk]

i have measured them, it's easyer than i'd thinked :D

but there is a little problem... if i'm not vrong the default voltages is ~ 1.65/2.8 for gpu/mem... i have 1.65/3.31!!!! my mem is overvolted by defautl?!?!?!? :confused:

[spaceboy]

no 3.31 è corretto

[Dirty_Punk]

Originally posted by spaceboy
no 3.31 è corretto

pfiuu!! :D :D

so from 3.31 to 3.5-6 is the max for safe voltage??? isn't it a low overvolt?!?
and the gpu, max to 1.9?? with 80w pelt and 3° water can i raise it to 2v?? (only for test howether ;) )

[sysfailur]

Originally posted by Dirty_Punk
pfiuu!! :D :D

so from 3.31 to 3.5-6 is the max for safe voltage??? isn't it a low overvolt?!?
and the gpu, max to 1.9?? with 80w pelt and 3° water can i raise it to 2v?? (only for test howether ;) )

I've done 1.92 on the gpu w/ aircooling, and 3.93~ on the ram w/ air (on 4ns ram).

[sysfailur]

Originally posted by aarion
sorry, i'm really noob on this v-mod thing. there are so many wires i also don't know which is which. Pls explain, thank you.

This should clear everything up. (I'm going to add this image to my first post as well so people won't have to search through the thread.)

http://www.maximumoc.com/img/hardware/4200_volt_mod/final_volt_mod_info.jpg

[aarion]

i got one big problem, my ram are damn hot. Just normal o/c to 600. Even with ramsink. The ramsink is hot to be touch. Can someone help me here?

[aarion]

i got one big problem, my ram are damn hot. Just normal o/c to 600. Even with ramsink. The ramsink is hot to be touch. Can someone help me here?

[AeroBrain]

So is there any way to mod these cards so they take power from a different source other than the AGP port of the motherboard? Seems like they (or even the rest of the motherboard components) could be more stable... well in the depth of abyss I like to think is my mind it sounds like it would be more stable.
3DFX did this on their Voodoo5 (5500 model anyway) series with a connector on the card to connect one of the 4-pin molex connectors from the PSU to it. Not to mention what would have been the Voodoo 6000 model if they stayed in business was supposed to have its own external power supply to plug directly into video card.

I need to go to college and take some electronic engineering courses I think... I'm really interested in things like this, but find roadblocks with time management. All my time just goes to surfing forumns at work, or playing games at home. Just no time to teach myself these things.
:D

[sysfailur]

Originally posted by AeroBrain
So is there any way to mod these cards so they take power from a different source other than the AGP port of the motherboard? Seems like they (or even the rest of the motherboard components) could be more stable... well in the depth of abyss I like to think is my mind it sounds like it would be more stable.
3DFX did this on their Voodoo5 (5500 model anyway) series with a connector on the card to connect one of the 4-pin molex connectors from the PSU to it. Not to mention what would have been the Voodoo 6000 model if they stayed in business was supposed to have its own external power supply to plug directly into video card.

I need to go to college and take some electronic engineering courses I think... I'm really interested in things like this, but find roadblocks with time management. All my time just goes to surfing forumns at work, or playing games at home. Just no time to teach myself these things.
:D

Well, I'm sure someone, like DDTUNG will correc me if I'm wrong, but there is plenty of voltage going through the agp port. When you change the resistances between two things you just allow more voltage of the voltage supplied to be used.

And aarion, I recommend you get yourself some fan cooling on your ramsinks... perhaps use largers ramsinks as well! My ramsinks rarely get hot at all... even @ 733mhz @ close to 4.0v. ;)

[Dirty_Punk]

Originally posted by sysfailur
I've done 1.92 on the gpu w/ aircooling, and 3.93~ on the ram w/ air (on 4ns ram).

can you read your resistances values? :)

[sysfailur]

Originally posted by Dirty_Punk
can you read your resistances values? :)

Not w/o disconnecting the solders... no :(

[morphling1]

Hey great thread btw. I finaly got my gf4 4200. Leadtek Winfast 64mb oem (just old GF3 reference cooler on) . Guess what I'll be doing next :D. I just measured the default voltages 1.65 and 3.25V card overclock to 325/610 without artifact.
Next I slap on my GF4 waterblock you can see in liquid cooling and then lets see where I can take it.

[N8]

Originally posted by sysfailur
Not w/o disconnecting the solders... no :(

Why couldn't you just measure the resistance across the VR, sys? :)

[aarion]

i can't find any where that they selll such a big ramsink like yours.

[N8]

aarion,

I believe he cut those ramsinks from some sort of CPU heatsink. Old CPU heatsinks make great ramsinks if you own a hacksaw :D

[Goldlocke]

sysfailur, do u have Heatsinks on your RAMs? there not on the pics!

[N8]

Goldlocke,

You can see them on these 2 pics :)

http://www.maximumoc.com/img/hardware/4200_ramsinks/top_sho1.jpg
http://www.maximumoc.com/img/hardware/4200_ramsinks/side_shot.jpg

[aarion]

the thing is how you stick it onto the ram??????

[N8]

You've basically got 2 options.

1) Frag tape which is OK at passing the heat from the chip to the heatsink and is pretty easily removed if need be. I'm not sure where to buy this stuff but I know it came along w/ my TT ramsinks).

2) Thermal epoxy which is better than the tape for conducting heat but can be a VERY permanent solution if you don't mix some compound with it. The Arctic Alumina Epoxy(don't use the Arctic Silver Epoxy because it can conduct electricity which is bad for all those pins on the ram chips) can be found just about anywhere selling PC parts.

[sysfailur]

Originally posted by [N8]
You've basically got 2 options.

1) Frag tape which is OK at passing the heat from the chip to the heatsink and is pretty easily removed if need be. I'm not sure where to buy this stuff but I know it came along w/ my TT ramsinks).

2) Thermal epoxy which is better than the tape for conducting heat but can be a VERY permanent solution if you don't mix some compound with it. The Arctic Alumina Epoxy(don't use the Arctic Silver Epoxy because it can conduct electricity which is bad for all those pins on the ram chips) can be found just about anywhere selling PC parts.

Thanks for linking Goldlocke ;) I would NOT use fragtape though. That stuff doesn't stick at all, well at least what I've been using doesn't and it's a pain to get on as well. If you don't want a permanent solution just use small globs of AS Epoxy, instead of a whole bunch.

[Goldlocke]

Hmm,...I got mine right now at 320/685MHz stable.
VGPU is 1,77V
VMem is 3,93V

GPU acts strange: doesn't want more than 1,80V regardless of the MHz. Can't get her over 320MHz stable in 3DMark. Probably cooling is not enough (waterblock by aquacomputer.de).

@ sysfailur and DDTung: thx for your research! But, sysfailur, is there space between your DIMM and that huge Ramsinks on your vidcard? (I had to use a flat heatsink on the upper rightmost Chip, otherwise would have blocked DIMM1&2).

[Goldlocke]

YEAH! - BABY - YEAH! ;)

695MHz DDR on RAMs now :D . without artefacts in UT2k3 and 3DMark.
still my GPU sucks! any suggestions?

[aarion]

goldlocke, can i have some pic on your card? one thing i found out, beside the rams there this small chips that are higher than the ram which is blocking when i'm trying to put the ramsink on to it.

[sysfailur]

Originally posted by Goldlocke
Hmm,...I got mine right now at 320/685MHz stable.
VGPU is 1,77V
VMem is 3,93V

GPU acts strange: doesn't want more than 1,80V regardless of the MHz. Can't get her over 320MHz stable in 3DMark. Probably cooling is not enough (waterblock by aquacomputer.de).

@ sysfailur and DDTung: thx for your research! But, sysfailur, is there space between your DIMM and that huge Ramsinks on your vidcard? (I had to use a flat heatsink on the upper rightmost Chip, otherwise would have blocked DIMM1&2).

You're welcome! (Slow it may have been on my part though :P)

And to answer your question, IT BARELY FITS!! hehe - It's a very very tight fit on my 8k5a3+ and on my IT7 I just miss the last Dimm slot.

[N8]

Yep, thanks for the tech help DDTUNG, and all u other guys that had the balls to try it b4 I did. It took me a while to convince myself that I wasn't gonna fry my card but I tried it last night with some clips rather than soldering & was successful.

Ended up @ 357/695 w/ no artifacting and stable thru multiple passes of 3DMark. This is with custom air-cooling on the GPU and no ramsinks...3.9v to the memory and it never even got over 27c - measured w/ a laser thermometer pointed on the chips. I'm wondering just how much voltage this memory could handle, hehe...cuz its definitely not getting hot. Was afraid to go any further :)

My core already clocked well(335 b4 volt mod) so I was actually kinda surprised it only went to 357MHz @ 1.9v. I think with 2v or more it would do 365ish but I'm afraid to send that much to it. Highest temp measured from the back side of the GPU was 43c.

[svol]

I have a MSI 128MB GeForce4 Ti4200 card and I al;ready soldered the wires to the chips and I'm now ready to attach the vr's. I have watercooling on my GPU (no peltier) and RAMsinks on the 4ns Samsung RAM chips... any idea what the maximum voltage would be without frying my chips? I don't have those handy temp measurement tools and have to do it with a diode and I don't know how accurate they are.

[N8]

Well, if you've got watercooling on ur GPU then I'd guess its running cooler than mine under load...and you've got ramsinks on ur memory while I don't. I'm assuming the Samsung's stock voltage is similar to the Hynix's(3.31v) and if so I don't see why your card couldn't handle 1.9v/3.9v as mine did. Mind you, the cards ARE different & I don't want you to fry ur card so go slowly and in steps...if anything gets weird, back off.

[Dirty_Punk]

anyone of you can read the resistence value for GPU 1.9-1.95V & DDR 3.9V???

[X Men SS]

I guess that someone didn't read the whole thread ;) !

Here it is (page 5) :

http://www.xtremesystems.org/forums/showthread.php?postid=29565#post29565


posted by macci

Im using 1kohm VRs for both GPU and MEM. That is pin 11-14 on SC11012

Vgpu:
1kohm => 1.75ish
350ohms => 1.9ish

Vmem 800ohms => 3.65ish

[Goldlocke]

@ aarion: right you are about the capacitors near the RAMchips. That 2 Capacitors beside each RAMchip is indeed ~ half an millimeter higher than the RAMchip. :( I had to cut my heatsinks to fit! :(

[Goldlocke]

2nd for aarion...

[Goldlocke]

3rd for aarion...

[Dirty_Punk]

Originally posted by X Men SS
I guess that someone didn't read the whole thread ;) !

Here it is (page 5) :

http://www.xtremesystems.org/forums/showthread.php?postid=29565#post29565

i have done a different mod, with pin11-VRs 5k-ground, and it has a different value ;)

please, can anyone check the resistance value to obtain 1.9 & 3.9 or 1.95 & 4v

[Per Hansson]

I've done the v-mod now

The card is a Gainward TI4200 (not golden sample) with 64mb of 3,6ns EtronTech memory

The thing is that increasing the v-mem doesn't help at all, I've been up to 3,8 volts (default is 3,5 on this one) and I get just as much artefacts as without the v-mod... (621,5 is fine, 634,5 gives artefacts...)

I have put ramsinks on the card, aluminium ones from Thermaltake

UPDATE: Putting a big 120mm YS-Tech fan blowing some 130cfm of air onto the card seems to help, guess the ram was getting too hot with the increased voltage...

However I still can't go high, I can get 634,5 artefact free now but when I bump up to 650 I get artefacts galore all over the screen...

And funilly enough increasing the voltage above 3,60v doesn't seem to do anything bar give more artefacts...

--

The core does show some improvments however, I haven't pushed it but now that's it lapped (which did 8,5mhz in itself) i can reach 340mhz @ 1,78v (haven't tried higher) with stock air cooling (before was 328,5)

But still, is it really possible that increasing the v-mem doesn't yield any benefit at all?

http://hem.spray.se/hanzzzon/Pict0238.jpg

*don't mind that circuit on the right; it's a fan controller...

[N8]

I've always said I thought something was wrong with the memory on those Gainwards. I could never get mine over 580MHz(had 2 of these cards) @ stock voltage w/o major artifacting.

[aarion]

goldlocke, thank for the pic. I actually want the pic of your card with the ramsink on. hehehe, sorry for the misunderstanding, thanks anyway for the pics.

One thing i realise is the ram is damn hot.

[Per Hansson]

Ok, so you guys say this memory suck, ok, that's fine...

From what I've heard Hynix memory is one of the best, and after reading this thread I've seen that the Abit Siluro TI4200 gets some insane 700mhz+ overclocks.

What I'd like to know is if there is any difference with the bare 64MB card and the 64MB with OTES cooling. (Bar the cooling of course.)

And also the same board but with 128MB of memory. Do they all overclock to about the same speed or is one of them a "black sheep"?

oh, and is there perhaps another card you guys swear by, if so, which one?

And lastly, what cooling do you guys employ for the memory bar the heatsinks? Do you have a fan infront of it blowing cool air all over it?

The reason I'm asking is that my computer is watercooled, including the GFX cards GPU, but this doesn't leave much cooling for the RAM... I've only got very quiet Pabst fans in my case...

[Dirty_Punk]

tryed today a Abit Ti4200 with 4ns Hynix memory...
can do 355/660 w/o mod and w/o artifact :) :cool:
yes, with watercooling and 3° water, but are very hingt frequencies :)
next week voltmod & peltier :D

PS: with stock cooling can do 335/640 ;) w/o any artifact, 650 with minor artifact

[Per Hansson]

Which model was it? (64mb, 64mb OTES or 128mb)

[N8]

Mine is the orignal 64MB, 4ns hynix. I got close to 700MHz w/ no ramsinks.

The OTES one uses 3.6ns hynix just like the MSI card but the 3.6ns chips don't seem to OC any further than the 4ns...Goldlocke's is a pretty good example of that.

And the 128MB will prolly have 4ns samsung, which don't seem to be oc'n as well as the 4ns hynix...so if i were to buy another 4200 it would definitely be one with the 3.6 or 4 ns hynix chips on it as they seem to both OC well...but I wouldn't pay no premium for the 3.6ns if u know what i mean :D

[Per Hansson]

Ok, thanks for the advice N8!

Now I just gotta sell this Gainward ;)

[sysfailur]

Originally posted by Per Hansson
Which model was it? (64mb, 64mb OTES or 128mb)

The OTES does not have the capacitor where normall you'd monitor memory, they've moved it I geuss. So that's one difference ;)

[Dirty_Punk]

Originally posted by Per Hansson
Which model was it? (64mb, 64mb OTES or 128mb)

standard Abit TI4200 64MB ;)

[aarion]

is it ok to vmod the ram and not use any ramsink on it?

[Per Hansson]

If you are careful and not apply to much voltage and also keep an eye on how hot the RAM gets...

[N8]

I run my 4ns hynix @ 3.9v & 695MHz w/ no ramsinks...I've measured the chip temps @ under 80F which is rather cool. While sysfailur says his get rather hot(and he has ramsinks). I think the best way to tell is to feel the chips with ur fingers while upping the voltage...mine were barely warm to the touch. Not sure why the difference, as we both have the same card.

[Dirty_Punk]

Originally posted by [N8]
I run my 4ns hynix @ 3.9v & 695MHz w/ no ramsinks...I've measured the chip temps @ under 80F which is rather cool. While sysfailur says his get rather hot(and he has ramsinks). I think the best way to tell is to feel the chips with ur fingers while upping the voltage...mine were barely warm to the touch. Not sure why the difference, as we both have the same card.

can you measuer resistace for DDR overvolt?? tnx ;)

[N8]

I will try to do that for ya tonight...what voltage do you want, 3.9v?

[Dirty_Punk]

if you can 1.9-1.95v for gpu & 3.9 for ddr :)

[aarion]

my ram is damn hot without the ramsink. I have check the voltage, the gpu is running 1.7v and the mem is 3.3v. So how much can i got? 1.9v and 3.9v? with a 5k variable resister?

[sysfailur]

Originally posted by aarion
my ram is damn hot without the ramsink. I have check the voltage, the gpu is running 1.7v and the mem is 3.3v. So how much can i got? 1.9v and 3.9v? with a 5k variable resister?

You have the ability to go higher, but I would say if you're aircooling 1.9 and 3.8 or 3.9 would be safe.

[Dirty_Punk]

Originally posted by sysfailur
You have the ability to go higher, but I would say if you're aircooling 1.9 and 3.8 or 3.9 would be safe.

a few times ago i'd burned my ti4200 because i'd wrong regulated the 5k variable resistance for vmem...

i don't know how much voltages had used to burn ddr (the artifacts remain also with 3.3v ddr.. -> burned ti4200 :( ), but from your knoweldege, what is max VDDR before burning all?? and VGPU??

if i set 2v/4v can i burn all or this are a "safe" voltages for extreme test (with pelt&WB & selfmade memcooler by 2 socket 7 cooler)??

tnx

[sysfailur]

Originally posted by Dirty_Punk
a few times ago i'd burned my ti4200 because i'd wrong regulated the 5k variable resistance for vmem...

i don't know how much voltages had used to burn ddr (the artifacts remain also with 3.3v ddr.. -> burned ti4200 :( ), but from your knoweldege, what is max VDDR before burning all?? and VGPU??

if i set 2v/4v can i burn all or this are a "safe" voltages for extreme test (with pelt&WB & selfmade memcooler by 2 socket 7 cooler)??

tnx

Yeah I geuss I should've clarified..... my definition of "safe" is that it runs hehe..... I did have artifacts all over the place... So ehh, maybe 3.75 for mem and 1.80 for gpu would be ACTUALLY safe ;)

[Dirty_Punk]

so if i try 4v mem or 2v gpu i have a good probability to burn it?? (i'm watercooled with 3° water & probably this week peltierized)

the problem is: hot to find the max voltage support without burn it?? does it crash in 3dmark like, or it burn directly?? :(

i think 1.9 & 3.9 will be safe for only test time, not??? could i'd burned my old ti4200 with 3.8v?? or it would be probably with 4.1??

[N8]

I tried both 2v & 4v w/o burnin anything...but it didn't gain me anything either so I turned it back to 1.9/3.9. Yours may be different, so don't take my word for it. ;)

BTW, didn't get a chance to measure those resistances last night...will try to tonight :)

[N8]

Also, I do not get artifacts @ 3.9v...and I have no ramsinks...but for some reason my memory chips are rather cool compared to others that I'm hearing.

[Dirty_Punk]

i need the resistances to take a similar resistance to put in serial with 5komhz VRs to make a overvolt protection ;)
i don't want to burn another ti4200 :( :mad:

tnx!

[N8]

overvolt protection? use a 10 or 20 turn pot and a slow hand...there's ur overvolt protection :p

[sysfailur]

Originally posted by [N8]
overvolt protection? use a 10 or 20 turn pot and a slow hand...there's ur overvolt protection :p

Yeah I have 20 turn pots... You can do a full 360 and sometimes it won't even move up .01v.

[Goldlocke]

i cant get my GPU higher! :mad: only 320MHz @ 1.77V.
upping the voltage decreases stability. GPU is watercooled.
any thoughts?

[sysfailur]

Originally posted by Goldlocke
i cant get my GPU higher! :mad: only 320MHz @ 1.77V.
upping the voltage decreases stability. GPU is watercooled.
any thoughts?

A2 or A3 core? My A3 core aircooled doesn't hit really high either :\ I max out @ 327... I was hoping for like 340 after hearing results from others. It all depends on the diff. chips I geuss.

[Dirty_Punk]

Originally posted by [N8]
overvolt protection? use a 10 or 20 turn pot and a slow hand...there's ur overvolt protection :p

my VRs regulate from 0 to 5k in only 1 turn :(

try to change them, probably better solution ;)

[Bravo]

Sys, you might want to update the first picture with Pin information (e.g. GPU Chip: Pin X, Mem Chip: Pin X) to help for those "at a glance" looks :)

[xmastermindx]

does ANYBODY know if its possible to Vmod a PNY ti4200? us PNY owners seem to get ignored when we ask questions here.... :mad: :mad: :mad:

[aarion]

i just tried to solder the wires on the chips, guess what? i failed. The wire just can't stick to the leg of the chip. So i gave up.

What do you think is the problem? don't know y the damn wire just can't stick.

[Dirty_Punk]

boys, i think to have found a very good Abit ti4200
today i'd tryed with MCW40, and it can do 365/650 without any artifact!!! the problem i that antec 400w can't manage my 1800@3ghz 1.85v & 80w pelt with this ti4200... so tomorrow i try with antec 350w for the pelt & 400 fir the system, and try to mod the ti4200 :D

[morphling1]

I finaly made voltmod on my Leadtek, thanks for all the info in this thread
Here are two pics:
http://www2.arnes.si/~mlivak/Gf4%20design/steps/volt%20mod1.jpg
http://www2.arnes.si/~mlivak/Gf4%20design/steps/volt%20mod2.jpg
I set volatages to 1.85 & 3.7V I can currently hit 350/670 no artifact, my deafult oc. was 320/615
You can see my cooling in liquid cooling part of the forum, a little later when I upload new pics.

[Dissolved]

ok i spent 10mins to read 4pages of this thread, and no one said anything about the ALBATRON GeForce 4 TI4200P TURBO.. im depressed :(

im going to buy this card in about a week, and id like to hit 320/720 that a few ppl have gotten. Now i dunno if the stock sinks will allow that high, but would anyone like to post a pic of this card and point out the exact spots?

im thinking of getting some pomona grabbers like the ones used on mobo vmods, incase i happen to try anything.
What kind of pot would i need? im not looking to vmod it that high.
but i just dont really wanna remove the stock cooling. at least till like 6months after the card is old. so i cant ööööö about breaking a 200 dollar card :)

Thanks

[wEs]

well if you want to reach 320/720 don't buy the albatron p turbo, the most of them won't reach near that, 2 guys on unreal.pt forum had only reached 300/650 that is not nothing special for a so expensive card, think twice...

[sysfailur]

Originally posted by Dissolved
ok i spent 10mins to read 4pages of this thread, and no one said anything about the ALBATRON GeForce 4 TI4200P TURBO.. im depressed :(

im going to buy this card in about a week, and id like to hit 320/720 that a few ppl have gotten. Now i dunno if the stock sinks will allow that high, but would anyone like to post a pic of this card and point out the exact spots?

im thinking of getting some pomona grabbers like the ones used on mobo vmods, incase i happen to try anything.
What kind of pot would i need? im not looking to vmod it that high.
but i just dont really wanna remove the stock cooling. at least till like 6months after the card is old. so i cant ööööö about breaking a 200 dollar card :)

Thanks

Ehh, that's because the albatron 4200p turbo is totally different layout than the 4200's we're working with.... and ya know there is a whole other thread on the albatron. Go check that one.

[Dirty_Punk]

sorry but now i've modded my Abit ti4200 but have some doubt on it's mod...

i've connected the 2 pin11 of volt regoulator to a 5k trimmer and so to ground...

set resistance for vmem to 1k, and read about 3.6-3.65v...
set resistance for vgpu to ~0.85k and read about 1.92v...

this is the maximun overvolt that card can do without problem.... if i set vmem over 3.65 i have a lot of artifact and crashes.. the same with vgpu over 1.92...

this with watercooling+plet for gpu & ramsink for mem...

isn't it strange???

[WannaGoFast]

Just recieved one of these Albatron Cards from NewEgg,
and I must say im quite disappointed with it.
I'm not sure what card the hardware sites are usin to write their reviews by :confused:
but I assure you it must be different then what I got.
The one I have is only clocking 290/620 without lockups
or SERIOUS artifacting at anything much above that.

My lil abit 4200 (rest in pieces) kicked this pos's ass!!!! :mad:

edit: After work today im gonna pull all the h/s's off
and clean it all up and put it back together with some
A/S and see if that improves anything. But I kinda doubt it.

I see a RMA by the end of the day :(

Peace

WannaGoFast

[N8]

Dam, Wanna...that really sucks. By the sounds of it, the first shipments of those Albatrons really clocked like mofo's while the latest ones don't seem to be fairing very well :(

RMA that thing and try another Abit....save urself a few $ anyway.

[Dissolved]

Originally posted by WannaGoFast
Just recieved one of these Albatron Cards from NewEgg,
and I must say im quite disappointed with it.
I'm not sure what card the hardware sites are usin to write their reviews by :confused:
but I assure you it must be different then what I got.
The one I have is only clocking 290/620 without lockups
or SERIOUS artifacting at anything much above that.

My lil abit 4200 (rest in pieces) kicked this pos's ass!!!! :mad:

edit: After work today im gonna pull all the h/s's off
and clean it all up and put it back together with some
A/S and see if that improves anything. But I kinda doubt it.

I see a RMA by the end of the day :(

Peace

WannaGoFast


Hey can u get me the numbers off the card? i got mine from newegg also, and when i ran 3dmark @ 315/625 i got Alot of arifacts. If you rma yours gimme the numbers off both cards cuz i wanna see if i should rma mine. im thinking about emailing albatron and see if theyd gimme any advice.
Thanks

[Dissolved]

ok i emailed Albatron usa (there actually local to me about 15mins away) About why the cards artifact at low overclocks. So hopefully they'll be nice enough to send me an email back w/ some advice or a fix. Cuz i didnt pay 200 for a damn card that wont do ti4600 speeds w/ modding. :(

[WannaGoFast]

Amen to that!!

Especially one that boasts (and i quote new egg)
"Wanna Get Ti4600 performance with Ti4200 price???"
in their sales pitch.

Most likely I will RMA it and just replace my broken
Abit ti4200 with another of the same, and save myself 50 bux!

Please post back if you hear from Albatron,
as I'd be most interested in their reply.

Also, if you can be a bit more specific about
what numbers you would like I will be glad
to post them here for you.

peace

WannaGoFast

[Dissolved]

Originally posted by WannaGoFast
Amen to that!!

Especially one that boasts (and i quote new egg)
"Wanna Get Ti4600 performance with Ti4200 price???"
in their sales pitch.

Most likely I will RMA it and just replace my broken
Abit ti4200 with another of the same, and save myself 50 bux!

Please post back if you hear from Albatron,
as I'd be most interested in their reply.

Also, if you can be a bit more specific about
what numbers you would like I will be glad
to post them here for you.

peace

WannaGoFast

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=4791

[Penguinsfan]

i just did this mod to my AOpen Geforce 4 4200 128MB.....very nice

so far i'm at 325/477 (rivatuner reports 324.5/472.5)

i just finished soldering the vmem pot on however i have no way to measure the voltage (caps are not the same and there's only one cap that i can measure from and thats for vcore) so i'm kind of shooting in the dark....isn't that scary? hah

i guess i jack up the mem frequency and if i get artifacts i give the pot a turn :)

[Dirty_Punk]

finally 375/720 & 16.8k in 3dmark :D :cool:

vgpu 1.92-3v
vmem at 3.6v

doesn't accept any highter overvoltage... soon gpu lapping ;)

[NoStra]

Originally posted by morphling1
I finaly made voltmod on my Leadtek, thanks for all the info in this thread
Here are two pics:
http://www2.arnes.si/~mlivak/Gf4%20design/steps/volt%20mod1.jpg
http://www2.arnes.si/~mlivak/Gf4%20design/steps/volt%20mod2.jpg
I set volatages to 1.85 & 3.7V I can currently hit 350/670 no artifact, my deafult oc. was 320/615
You can see my cooling in liquid cooling part of the forum, a little later when I upload new pics.

Is that without heatsink on your ram?

[ppctx]

just wanted to show off my modding work. the ramsinks with vmod netted me 53mhz over stock overclock. the vr's are glued to the pcb so as no accidents happen when working around the card
http://www.gospelforyou.com/other/MSI_ti4200.JPG

[Dissolved]

What cooling do you have on the GPU to get 340mhz?

[ppctx]

Currently the gpu is stock cooled, want to put a larger cpu heatsink on but dont really know the best way or a good one to use.

[Dissolved]

i want an alpha 153u sink, but there like 33 dollars..

[Grentarc]

i'm thinking about doing it on my leadtek.. only one prob... stock cooling probably wont be enuf do you think?... I want to hit at least the 11K in 3DMark, and my Leadtek only goes to 310/570 at the moment... looking at getting some copper ram sinks made up and a 120mm 108CFM sunon blowing over it....

[mechl!n]

Hi.
PLEASE help me!
In which points i can read voltage of memory and GPU?
There are few post in this forum but anyone is different.
http://mechlin.fm.interia.pl/msi.jpg

or maybe:
http://bravo.ausgamers.com/lardarse/lard/fronter.jpg

or... ???

Lots of "OR"...

SORRY 4 MY ENGLISH:confused:

[asw7576]

I have PixelView GF4 Ti4200 - 128mb, the VGA has two SC2602S IC regulators and Samsung TC40 modules. OK ... I did the mod to pin11 with 1Kohm for both IC. Cooling is no problem here, Big Ram Sink are employed.

Now my question: How come I see NO BIG performance difference in DDR speed after the mod? The memory speed stuck at 550MHz (default) and at 570MHz (with 1Kohm). Even some artifacts can be seen at 570MHz (with 1Kohm).

Can someone give me some tips?

[BoGuS]

Hi you guys..

4st of all, great post..

2'nd... I have a Leadtek A280 LE TD MYVIVO (Gforce Ti4200) with 4ns samsung ram.. with stock cooling it goes at a max 295/535.. and i think thats a low score...

has anyone modded this card or do any of you know if it will help me in my OC'ing..

I plan to make a cooling mod 4 it anyway, i just wanted to know in advance, before i start the big heatfan race.. :O)

my 3dmark
http://service.futuremark.com/compare?2k1=5714819

B.

[Sisco]

hey all

my MSI TI4200 runs stable @ 325/629 with artifacts somtimes and 325/625 rockstable and no artifacts

but i also really wanted to know how to voltmod my 4200 thx up front

[asw7576]

People.... please help me. I want to volt mod VGA's memory, but mine is little bit different than the first generation of GF4 - 4200(NV25).

Mine is GF4 with AGP 8X (NV28), look at the pic and help me how to volt mod the memory. The IC for memory voltage regulator is ACOA 0236.

Lastly... I use 1K ohm for CS2602S, and the screen go blank instantly. So I removed the resistor and the VGA is okay. Should I use bigger resistor such as 2K ohm ?

http://www.ixbt.com/video2/images/ref/ti4200-8x-scan-back.jpg

[julian]

What about this? It's a PNY Verto Ti 4200 64MB:

http://digilander.libero.it/ccuratola/4200.jpg

It is completely different from any other 4200 I know...:confused:

On the chip with 7 pins by side in the bottom right (the one marked as U816) it is written: P22SL - 74ACT08.

[sysfailur]

Julian if you run a search there is a PNY 4200 specific thread, but I don't know if they found a solution. :(

Looking at your card though, you do have 2 of the same SIZE voltage regulators as on the reference design, but they're in a different spot..

Now I'm not sure if there are any more, if those are the right ones or whatever, but I would say take measurements on pin 6 w/ a multimeter and post up in here. Maybe we can get somewhere from there.

Also can you give the numbers are on those two chips on the top left? ( U815 and U813 on the PCB ).

That may help us figure something out! :)

[julian]

Originally posted by sysfailur
Julian if you run a search there is a PNY 4200 specific thread, but I don't know if they found a solution. :(

Looking at your card though, you do have 2 of the same SIZE voltage regulators as on the reference design, but they're in a different spot..

Now I'm not sure if there are any more, if those are the right ones or whatever, but I would say take measurements on pin 6 w/ a multimeter and post up in here. Maybe we can get somewhere from there.

Also can you give the numbers are on those two chips on the top left? ( U815 and U813 on the PCB ).

That may help us figure something out! :)

Unlikely nobody found a solution for this pny card in the specific 3d...:(
However, I can write here the number of the 2 chips U813 and U815:
- U813: 51031 - 72Ai
- U815: TL431C - 26M - C2Y2
I don't have a multimeter, so I can't read out the measurements on those chips...:(:(
Actually I'm looking for infos, but someone else will do the mod one day! :)

[sysfailur]

Originally posted by julian
Unlikely nobody found a solution for this pny card in the specific 3d...:(
However, I can write here the number of the 2 chips U813 and U815:
- U813: 51031 - 72Ai
- U815: TL431C - 26M - C2Y2
I don't have a multimeter, so I can't read out the measurements on those chips...:(:(
Actually I'm looking for infos, but someone else will do the mod one day! :)

Nevermind my rantings... that's not the same votlage regulator as what's on mine :P I'm so dense :P It's the same size as the one on my A7N8X's memory... god I'm stupid :P

[julian]

So it's impossible to mod this pny? :eek: :(

[sysfailur]

Originally posted by julian
So it's impossible to mod this pny? :eek: :(

I'm sure it's possible, but I certainly dunno how to :(

[julian]

Originally posted by sysfailur
I'm sure it's possible, but I certainly dunno how to :(

However, thank you, sysfailur. :)

[wEs]

anyone knows whats the lowest resistance value for vmem and vcore? what i mean is, i know that over 2/2.1 on the core the gains are more heat than Mhz but i don't know what resistance value to get that voltage...also anyone knows how much is too much on the mem?

i'm going to waterchill the core and put some tt ramsinks on the mems...

[sysfailur]

Originally posted by wEs
anyone knows whats the lowest resistance value for vmem and vcore? what i mean is, i know that over 2/2.1 on the core the gains are more heat than Mhz but i don't know what resistance value to get that voltage...also anyone knows how much is too much on the mem?

i'm going to waterchill the core and put some tt ramsinks on the mems...

I've done 1.95v (which was optimal) on my 4200's core but that was cus I was aircooling it. The memory on the other hand I found 4.05V I believe to be the best. Anything 4.00V + though and you risk possibly frying something.... So be careful!

[PoTHeAD]

i have the pny vertigo ti4200 and it does 318/678 out the box (it came with heat sinks already) im trying to v-mod it so i can come for mr.icee (i wish) but the problem is every guide i find on how to is talking about the SC1102 controllers being on the back and there arnt any chips on the back does any one know what i should do?????
btw i have the same exact pny 64mb vertigo as julian and im having the same problems....some one please help if ya can

[str8_blunted]

heres my ti4200 ....theres no memory chips at all on the back:confused: :confused: http://www2.freepichosting.com/Images/52828/0.jpg