TI4200 Volt Mod?

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06-16-2002, 04:39 PM
sysfailur

Quote:

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.
06-16-2002, 04:43 PM
DDTUNG

sysfailur

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:
06-16-2002, 08:30 PM
sysfailur

Re: sysfailur

Quote:

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.
06-16-2002, 09:32 PM
Malecky

what kond of an a OC are you without a multimeter I have more that three:D :D
06-16-2002, 10:42 PM
sysfailur

Quote:

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
06-16-2002, 11:05 PM
Malecky

Quote:

Originally posted by sysfailur

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

Sweeet:D
06-16-2002, 11:27 PM
Bravo

Quote:

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.
06-17-2002, 01:53 AM
Bravo

Quote:

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 :)
06-17-2002, 11:22 AM
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?
06-17-2002, 12:23 PM
sysfailur

Quote:

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 ;)
06-17-2002, 06:55 PM
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.!
06-17-2002, 06:59 PM
DaGooch

Quote:

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. ;)
06-17-2002, 07:25 PM
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
06-17-2002, 10:50 PM
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
06-18-2002, 07:06 AM
N8

DDTUNG,
I have this card but this Auto-Ranging Tester 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. :)
06-18-2002, 02:34 PM
DDTUNG

[N8]

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:
06-18-2002, 04:12 PM
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 :)
06-18-2002, 04:39 PM
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 ;)
06-18-2002, 04:49 PM
sysfailur

I just rechecked the top right and now I'm getting 104. Heh.
06-19-2002, 12:15 AM
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:
06-19-2002, 12:38 AM
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;)
06-19-2002, 05:21 AM
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)
06-19-2002, 05:58 AM
N8

had 2 of them gainwards b4 i got the abit. do urself a favor, sell it and get the abit, lol :)
06-19-2002, 12:16 PM
sysfailur

Quote:

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!
06-20-2002, 07:56 AM
spaceboy

Quote:

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?

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