Palit / XpertVision 7300GT DDR3 Voltmod

[massman]

I bought myself two cards to play with, but I can't find any voltmod :(. So I was hoping if anyone could figure this voltmod out.

Pictures:
Back: Mesured volts + Chips named (http://img299.imageshack.us/my.php?image=1002847mod2hv4.jpg)
Front:Mesured volts + Chips named (http://img284.imageshack.us/my.php?image=1002854mod1bn4.jpg)

If you need any more information, please let me know.

[SikaRippa]

Hi,

I wonder there are two identical regulators 'APW7120' (one front, second bottom) ? Could you confirm this ? As you have measured at least one chip has 0.8 V in pin #6, which indicates the chip is 'APW7120' and it is used in a normal mode.

--

The datasheet of that IC can be found here:

http://www.anpec.com.tw/products/download/APW/Apw7120/Apw7120.htm

The output voltage of this regulator can be adjusted easily (see www-page above) by decreasing resistance between FB (pin #6) and GND. In other words connect a HIGH value variable resistor (severel kiloohms minimum) between FB and GND and measure corresponding voltage Vmem/Vcore. Adjust resistor carefully and measure voltage level frequently.. and DO NOT make shorts/use low resistance values !!

Good luck :up:

[massman]

Hi,

I wonder there are two identical regulators 'APW7120' (one front, second bottom) ? Could you confirm this ? As you have measured at least one chip has 0.8 V in pin #6, which indicates the chip is 'APW7120' and it is used in a normal mode.

--

The datasheet of that IC can be found here:

http://www.anpec.com.tw/products/download/APW/Apw7120/Apw7120.htm

The output voltage of this regulator can be adjusted easily (see www-page above) by decreasing resistance between FB (pin #6) and GND. In other words connect a HIGH value variable resistor (severel kiloohms minimum) between FB and GND and measure corresponding voltage Vmem/Vcore. Adjust resistor carefully and measure voltage level frequently.. and DO NOT make shorts/use low resistance values !!

Good luck :up:

1) Yes there is; two identical APW7120 chips

2) At my home forum, which is dutch, Wittekakker also points out the APW7120 chip as Voltage regulator. The other chip should be the LMxxx chip. Can you check that chip out ?

[wittekakker]

Those black things with 1Rom written on them are inductors, and there are power mosfets not very far away either from those APW's. It could be that the one on the back of the card is used for Vmem and the one on front is used for Vcore. Massman can you messure on both legs of those black "1ROM" inductors and report back. You have to messure voltage from one leg to ground, not between the legs, that makes 4 messurements.

[SikaRippa]

1) Yes there is; two identical APW7120 chips

2) At my home forum, which is dutch, Wittekakker also points out the APW7120 chip as Voltage regulator. The other chip should be the LMxxx chip. Can you check that chip out ?

You mean LM358 ? That one is an operational amplifier: COULD be part regulator circuit. However, since there are two 'APW7120 ' regulator chips (+lots of components required for voltage genaration around them, like capacitors MOSFET's and inductors) is it LIKELY those those are used to generate two important DC-voltages.

So, it is good idea to check voltages of those nodes wittekakker pointed out.

[Konflikt]

Does anybody know inno 7300GT 256MB DDR3 voltmods?

[massman]

Those black things with 1Rom written on them are inductors, and there are power mosfets not very far away either from those APW's. It could be that the one on the back of the card is used for Vmem and the one on front is used for Vcore. Massman can you messure on both legs of those black "1ROM" inductors and report back. You have to messure voltage from one leg to ground, not between the legs, that makes 4 messurements.

Will do that this afternoon :)

[wittekakker]

Does anybody know inno 7300GT 256MB DDR3 voltmods?
Shoot some good pictures like Massman did previous in this thread and then it will be possible to help you.

[Konflikt]

I found it: Inno 7300GT 256MB DDR3 voltmod: http://www.vr-zone.com/?i=3932&s=8

I will make it, when 7300GTs arrive. (tomorrow:rolleyes: )

[massman]

Will do that this afternoon :)

Here are the voltages:

http://img333.imageshack.us/my.php?image=backih6.jpg

[wittekakker]

In one of your pictures you showed on our local forum you said stock core voltage was 1,16V. Blind-Ripper told us the RAM's were DDR3 and 2V is normal for those RAM's. Looking at your last picture I think you have to mod both APW chips: the one on the top left for Vmem, the one in the center for Vcore. You allready know how to mod it, it's explained on both Xs and local fora.

Do you agree SikaRippa, or do you have something else in mind?

oh and, eu... please report back if this mods works, it always might be usefull for others and for myself.

[massman]

In one of your pictures you showed on our local forum you said stock core voltage was 1,16V. Blind-Ripper told us the RAM's were DDR3 and 2V is normal for those RAM's. Looking at your last picture I think you have to mod both APW chips: the one on the top left for Vmem, the one in the center for Vcore. You allready know how to mod it, it's explained on both Xs and local fora.

Do you agree SikaRippa, or do you have something else in mind?

oh and, eu... please report back if this mods works, it always might be usefull for others and for myself.

Will do this today or this weekend :D

[Fr3ak]

Didn't know there was a thread about it.
I was talking to Big_Sam and S_A_V and I will mod at least one of my cards tomorrow when the parts arrive.
The Ram on the cards is Infineon AFL20 which is rated to run at 1.8V, but Palit runs it at 1.98V, so its already factory voltmodded.

Edit: Just out of curiosity: You are talking about the APW chips in front of the card, right?
I didnt start measuring yet, but the more I know, the less work I have to do as I am a kinda noob when it comes to figureing out vmods by myself. That ususally ends in releasing the magic smoke ;)

Edit²: Ignore what I just said. I just noticed the chip in front center is no APW. The one in front left and on the back seem the be the right cips according to their resistance. Damn those legs are small. Good thing I have 3 cards, so hopefully I can do it right with at least one card hehe.

Edit3: Hmm too bad, but my paket wont arrive today, so I have to wait another day :/

Edit4: Now that I thought about it, the resistance I measured seems to be too low. S_A_V said it should be between 500 and 1000Ohm, but its 260 on the back and 180 in front.
So does anyone know if that can be right?

Edit5: Just measured the resistance again with the heatsing attached and now I am getting 207Ohm in Front and 326Ohm on the back.
Gotta get another voltmeter, maybe this one aint working properly.

[Fr3ak]

Cant Edit my other post for some reason.
I did some more research with the help of Big_Sam.
The APW chip on the back of the card is definately for vmem mod. The point where massman measured 1.73V is the Vmem measure point. I am getting 1.98V with it and its connected to Pin8, so thats vmem. Resistance is only 327Ohm between Pin3(ground) and Pin6(feedback), but that must be it.
Will be looking for vgpu later or tomorrow. Measuring in front of the card aint that easy and it could aswell be possible that that 14pin chip on the back is regulating VGPU as it has 1.16V reading close to it.

[massman]

I'll try the voltmods and let you know if those are the correct mods.

[massman]

The suggested voltmods work perfectly: 1.2 Vgpu, 2.05 Vmem.

Next week some serious testing (Need a cpu ;) )

[Fr3ak]

So both APW chips are the correct ones. I just got my soldering stuff, will try the mods now too. I havent done any voltmods for ages, so it wont look good, thats for sure hehe.

[massman]

So both APW chips are the correct ones. I just got my soldering stuff, will try the mods now too. I havent done any voltmods for ages, so it wont look good, thats for sure hehe.

Yes indeed, the one in the front is for Vgpu, the one in the back is for Vmem.

[Fr3ak]

I solderd a 20K VR to the mem and 10K to the GPU. Hopefully thats not too much. I knew what I was doing finiding the right pins, but with the parallel VR I have no idea what exactly that APW chip does with it.

Edit: OK it works like a charm.
I am making a resistance-voltage table during the testing process.
I am testing 03 for now and 800 on mem just passed the test. I was limited to 777 before with that card. Everytime I tried 780+ it crashed during 03 started.
Will test whats the max with currfent settings, its too dark to get the card out of the case for measurements ;)
Thanks for the help given. I had a look at the datasheets and measured a lot, but I need to make sure I have a 99% of success and the help given above and from S_A_V and Big_Sam was great.

[massman]

I used 50K vr's, so I have to turn and twist more to have the correct voltage :D

By the way, I'll make a good screenshot with the voltmods and the reading points.

[Fr3ak]

I have made a lot of pics too. Will upload them latet today.
Going from 1.16V to 1.2V made my card run at 750 instead of 700, but I am gettin slowdowns past 720mhz. The ram on the card was a dud and only did 777mhz with default voltage and with 2.03V it runs 790Mhz.
Now I wish I didnt sell the card with the best mem. That one did 830mhz for benching, but 585Mhz on the core kept crashing :/
But from the tests I ran core speed has a bigger influence to performance than mem speed.

[massman]

I have made a lot of pics too. Will upload them latet today.
Going from 1.16V to 1.2V made my card run at 750 instead of 700, but I am gettin slowdowns past 720mhz. The ram on the card was a dud and only did 777mhz with default voltage and with 2.03V it runs 790Mhz.
Now I wish I didnt sell the card with the best mem. That one did 830mhz for benching, but 585Mhz on the core kept crashing :/
But from the tests I ran core speed has a bigger influence to performance than mem speed.

looks like the core really loves more volts :D

slowdowns are because of the extra volts or does the card get too hot ?

[Fr3ak]

None of both.
Dont know why. Happens to all cards I have.
When the core is too much overclocked it freezes, but after 10-40s it continues. I have max temps of 61C with 1.23V and it happens most times at the same scenes.

[massman]

None of both.
Dont know why. Happens to all cards I have.
When the core is too much overclocked it freezes, but after 10-40s it continues. I have max temps of 61C with 1.23V and it happens most times at the same scenes.

I've had the same problems with one card at 555 MHz. core :(

[Fr3ak]

For example, the card I am running now can run at 760Mhz, maybe even more, but I get a lot of slowdowns. Only 736.5Mhz runs all tests ok.
All video cards I had so far simply crashed when overclocked too much. Maybe if its unstable it resets itself to stock clocks or something to compute the same thing. No idea. Will watch it running Rivatuner to display all clocks after F1.
It happens most of the time at the same scenes which might be a cause that some instructions make the card instable at too high clocks.

[SikaRippa]

Sorry about delayed answer...

--

Nice you both succeeded to make voltmods without problems :toast: ... but too bad to get slowdowns. It could be possible that slowdowns are due to some overcurrent protection or/and throttling (GPU lowers speeds for a while) (?)

[Fr3ak]

I just read a bit more about this subject and it seems to be true that there is some kind of protection. After the slowdowns the card runs stock speeds again.
It seems to raise the speed again after a while. At about 800Mhz core I am getting artifacts before I get the slowdowns.
So if it stops for a few seconds, its overclocked too far and just not stable.
When running 05 I get a windows message saying display drivers are not working properly when it slows down.

I am sure it doesnt have to do with the vgpu being too high. I get those slowdowns with unmodded cards too when they are ovlerclocked too much.
Furthermore default 7600GT vgpu is 1.35V and it uses the same G73 chip.

[fakhrain]

probably the slowdown is caused by the cpu temp treshold. have u checked the vgpu temperature?

[Fr3ak]

yes, but that cant be it. Its below 70C.
Its the gpu being unstable, it clocks the card to stock settings for a while,then raises them again.

[massman]

yes, but that cant be it. Its below 70C.
Its the gpu being unstable, it clocks the card to stock settings for a while,then raises them again.

Do you force your vga to 3D perfomance level ?

[mascaras]

i will receive tomorow a Xpertivison 7300GT DDR3 , this vmod is the same to the Xpertvison too ?? >>> http://www.vr-zone.com/?i=3932&s=8


regards

[Fr3ak]

No the mod is completely different. You have to solder a VR to both APW chips. One is in the front on the left. That one is for vgpu. The other APW chip is on the back and is for Vmem. But the Ram is already factory overvolted, so be carefull with the volts.
But there are 2 different 256MB DDR3 Palit cards out, so make sure you have the same layout than the card in the first post.
The Layout of the 128MB card is different as well.

massman: I dunno. I use Ati Tool to set clocks. No idea hoe it sets the clocks.
I am running my cards on water now. Gaming stable at 1.49V at 845/800 40C load temp :)

[massman]

massman: I dunno. I use Ati Tool to set clocks. No idea hoe it sets the clocks.
I am running my cards on water now. Gaming stable at 1.49V at 845/800 40C load temp :)

With rivatuner you can set your vga to 'Force 3D Performance'. Your card will run constantly at 3d Perf. speeds; so only for benching ;)

[M@sk]

FR3AK can you please post the pictures of the vmod cause i dont known to what leg should i solder the pot?!

[Fr3ak]

I am not at home, so I have no pics. Massman uploaded 2 pics in his first post and named the chips.
There is a APW chip in front and in on the back of the card. They are located on top left.
You have to solder a VR to pin6(feedback) and pin3(ground).
Pins are counted like the following:
The point is Pin1.
1. 8
2 7
3 6
4 5

The reading pints are both on the back of the card. Massman named them 1.16V and 1.73V. But the 1.73V reading aint correct, stock memory voltage is 1.98V.

[zakelwe]

Freeze - release was introduced on the FX range of video cards by nvidia. Rather than just locking solid at the limit it does freeze release and so you can save the day though your score is rubbish. It's nothing new.

This is a gpu voltage issue, heat normally shows itself by artifacts of funny colours (pinks or green) or green triangles. Memory limit is shown by black lines and flashing triangles.

Regards

Andy

[Fr3ak]

Hmm I would say, that might be sometimes the case, but thats not always true.

The 7300GT showed the following behavior:
When ram was oced too much , its froze with vertical and horizontal lines all across the screen. Was a chess-field like pattern. No artifacts or anything else untill it froze.
When I set a way too high memory speed using ATI-Tool, I got green pixels around the mouse cursor when loading 03. Mouse was still movable, but PC froze.

Overclocking the core too much resulted in those temp freezes . After 800Mhz on the core, I am getting flashing artifacts all over the screen before I get those temp freezes.
I dont think the artifacts are caused by heat, because I have the same temp with a 120mm fan blowing at the cards + AS5 as I had with the stock cooler.
I am now running the cards watercooled 30C cooler and they behave still the same way with a shift in clockspeed.
My artifatcs are black and flashing. On aircooling max artifact clocks were 820/800 and max bench stable clocks 900/800.

[mascaras]

Xpertvison site say the 7300GT 128Mb have 1.4ns memory , are you guys sure that Xpertvisn 256mb model are 2.0ns???



http://www.xpertvision.de/v2/index.php?option=com_content&task=view&id=114&Itemid=1


EDIT: my expertvison say Infineon HYB18HS12321AFL20


regards

[Fr3ak]

Asking the question only once is in most cases sufficient ;)
AFL20 means 2ns.

[massman]

Asking the question only once is in most cases sufficient ;)
AFL20 means 2ns.

²

1.4ns is a typo or (?) a new revision.

[Fr3ak]

What is a typo?
The 128MB version from Palit has 1.4ns ram.
Inno3D also has 1.4ns 256MB cards and Galaxy has 1.2ns cards.

[massman]

What is a typo?
The 128MB version from Palit has 1.4ns ram.
Inno3D also has 1.4ns 256MB cards and Galaxy has 1.2ns cards.

Typo = error while typing (e.g.: 'intle' instead 'intel')

I don't see the 1.4ns and 1.2ns cards perform much better. The 2.0ns should have better timings :)

[M@sk]

I am not at home, so I have no pics. Massman uploaded 2 pics in his first post and named the chips.
There is a APW chip in front and in on the back of the card. They are located on top left.
You have to solder a VR to pin6(feedback) and pin3(ground).
Pins are counted like the following:
The point is Pin1.
1. 8
2 7
3 6
4 5

The reading pints are both on the back of the card. Massman named them 1.16V and 1.73V. But the 1.73V reading aint correct, stock memory voltage is 1.98V.

Ground doesnt necessary needs to be in pin3 right?I can solder the pot at any ground point in the card?

[Fr3ak]

Typo = error while typing (e.g.: 'intle' instead 'intel')

I don't see the 1.4ns and 1.2ns cards perform much better. The 2.0ns should have better timings :)


lol I know what a typo is, but I didnt know what exactly I should have typed wrong hehe
Well 1.2ns cards ususlly clock a little higher.


Sure you can take any other ground point as well, but although I think it doesnt matter, I have been told to take a groundpoint of the video card.

[massman]

lol I know what a typo is, but I didnt know what exactly I should have typed wrong hehe
Well 1.2ns cards ususlly clock a little higher.


LOL :)

Well, it's no typo at all, apparantly ;)


Sure you can take any other ground point as well, but although I think it doesnt matter, I have been told to take a groundpoint of the video card.

Indeed; every ground is good. I always pick the ground of the chip because it's easier for me.

[massman]

By the way, one card is fully modded (Bios + voltmods) and the dice container is installed.

http://img74.imageshack.us/img74/3039/1003030bi7.jpg
http://img177.imageshack.us/img177/237/backrq0.jpg

[Fr3ak]

Alright, when will you go for 1ghz on the core? I am quite sure it can be done without problems with sub zero cooling in case the card doesnt have a coldbug.

[massman]

Alright, when will you go for 1ghz on the core? I am quite sure it can be done without problems with sub zero cooling in case the card doesnt have a coldbug.

well ... when the autumn holidays arrive, I'll have a week to spend :D

I guess it's on the end of october, start of november.

[Fr3ak]

hehe ok, looking forward to it.
I might do some benching tomorrow with higher volts. Buts its a little more difficult to adjust vgpu with the system running. I d need 3 arms to do that ^^
Cant take the board out of the case too, so its a little difficult.

[mascaras]

anyone with a expertvison can post some pics with VGPU MOD???


regards

[sl4ck]

pls upload pics ;)

[Fr3ak]

Can do that once I am at home, which might take until the weekend.
But as I said its not complicated. Massman uploaded great pics with the names of the chips. The two APW chips is where you solder a VR to pin 3 and pin 6.

[massman]

Oh, I did make some easy pics, but forgot to upload them :(

And as they are on my benching system, I won't be able to upload them until this weekend :(

[aycibin]

hello there..! i see that your pcb has the same design with my palit 7600gs sonic.besides i have 256mb ddr3 1.4ns ram modules.vgpu=1.15v & vmem=2.03v right now by default.in a different article(http://xtreview.com/review114.htm) i read that vmod can be applied by pencil method using the R37(for gpu) and R34(for mem) resistors o the front side.i find pencil method much more safer than soldering stuff.default values on the review are R37=833ohms & R34=665ohms.if i could find the way to remove the cooler i could write also my values :( anyway,the pcb on the review is different than ours.so the placement of these resistors are different.in our pcb R37 is on the left of gpu & R34 is on the right side of the ram which is on the right side of the card(what an explanation :D ).but i think it does no changes,right?

PS: everywhere it writes that its so easy to remove and install this cooling.but i am still not able to do it :) however,i had installed several times for 9600 and 9800(also vmoded successfully).how should i do with this ? :)

[mitsirfishi]

yes i would like to see a pencil mod for the memory aswell as the vgpu because my core clocks crap and just turns off my pc i dont know why when i got passed 580 will just reboot and cpu is 100% stable but the memory does go to 816 :D which im quiet happy with and managed around 15k on 03.

and aycibin i tryed the 7600gs r34 and r37 mod and had no affect on my palit 7300gt sonic Gddr3

[Fr3ak]

I have been told that you have to pencil R23 for VGPU and SR58 for Vmem, but I havent tested it yet, so I cant tell wether its working or not.
You can try it at your own risk.

Will finally come home tomorrow, so I can upload pics.

[2fink]

did the pencil-mod some minutes ago... working great right now @ 1,37V ...

pencil r23 for getting higher vgpu:

1,2V, 210ohm stock for me,
1,25V 200ohm
1,37V 185ohm

[mitsirfishi]

2fink i found where it says r23 on the front but no resister near it is it the 1 which is above the r23 is it the vertical 1 or the the horizontal 1 which is above the st chip it sats 183 on the rester is that the 1

or could you upload some picutes please ?

[2fink]

2fink i found where it says r23 on the front but no resister near it is it the 1 which is above the r23 is it the vertical 1 or the the horizontal 1 which is above the st chip it sats 183 on the rester is that the 1

or could you upload some picutes please ?


look here:

http://img178.imageshack.us/img178/5732/1002854mod1bn4dr6.th.jpg (http://img178.imageshack.us/my.php?image=1002854mod1bn4dr6.jpg)

i marked the resistor :)

[mitsirfishi]

have you done the memory aswell and ive modded that

[2fink]

havent done it. spoke to fr3ak and he said it isnt worth it. the chips (1,8V stock) run @ 2V by default... so much more isnt good for them.

my overclock improved a lot by doing the voltmod + delta -100

before: 585/798
after : (over) 720 /789

[mitsirfishi]

have you got any scren shot of improvement in 3dmark 03 and 05 or css vst ?

[2fink]

no, dont have any shots atm. only tried 3dmark01 which scores wont improve much with the higher clock, because of the low cpu-clock....

will try some 03 now.

edit:

before mod @ 570/770: 12k
after mod @ 710/798, but with delta @ -100 (so performance is not much higher): 13.5k

[aycibin]

@mitsirfishi: ill try r37 pencil mod and write down here.i wish it worked for you :(

@2fink: how did you apply delta mod? actually i tried to mod from its bios using nibitor bios editor.but it didnt work.i couldnt give any - values :(

by the way,my default voltage for mems is 2v already.so i'm thinking to put some more volts on them.just waiting to get a new cooler before modding my mems :) now its working 540/740 without modding

[mitsirfishi]

aycibin do the r23 mod which 2fink kindly given :D i got from 580 to 700 plus core there for a happy chap :D i suppose i can go abit futher because my core 29c idel and 37 load with a zalman v900

[massman]

by the way,my default voltage for mems is 2v already.so i'm thinking to put some more volts on them.just waiting to get a new cooler before modding my mems :) now its working 540/740 without modding

The datasheets of the rams give us a maximum input of 2.5v. If you cool them enough, more volts shouldn't be a problem

[mitsirfishi]

mine did 580/800 stock so not that bad

[2fink]

@mitsirfishi: ill try r37 pencil mod and write down here.i wish it worked for you :(

@2fink: how did you apply delta mod? actually i tried to mod from its bios using nibitor bios editor.but it didnt work.i couldnt give any - values :(

by the way,my default voltage for mems is 2v already.so i'm thinking to put some more volts on them.just waiting to get a new cooler before modding my mems :) now its working 540/740 without modding

delta: use nibitor and write : 265 - delta (example: 265 - 100 = 156 <-- delta -100) in the box ;)

@ massman: are you sure about the ram, could you give me a link to the datasheet?

[aycibin]

def value of delta is 0 in the box.is this equal to 256? so if i write directly 156in the box,this refers to -100 right ? :)

[2fink]

right... 156 = -100 delta!

[aycibin]

owowow....delta mod works!!! here i go ;) 540/740 -> 595/740 (only delta and some mem timings settings changed)

since i'm still using the stock cooler,i didnt want to put much stress on it.the values of r37 &r34 were 35ohm & 800ohm so they seem to be useless too for me.you already said that :) in fact,r34 is copied next to each mem module,so it should not control mems at all.we need a different one for this.

i worked on r23 which was 440ohm by default.i decreased it to 406ohm.so 1.15v vgpu reached 1.25v and the new score is 665/740 :D

after those changes,max heat with full load & o/c in 3dmark05 increased 56C to 60C degrees.i think it can go further as temp reads.but i dont want to go without new cooling and ramsinks(patience for one week :D ).do you have any ideas about mem vmod ?Fr3ak said SR58 but where is it? :)

PS: i realized that forceware(91.47 installed) is limiting o/c of 7600gs around 555(gpu).rivatuner and coolbits both failed in testing(before applying).i had to disable the testing in rivatuner.

[mitsirfishi]

whats with the delta thing i know there is a delta thing on the 7800gt where it overclocks the core by 40 or 50mhz on the core when going into game

[Rudyn]

Is this delta -100 mod works for 7600GS only or does it apply to any 7300GT also? :confused:

owowow....delta mod works!!! here i go ;) 540/740 -> 595/740 (only delta and some mem timings settings changed)

[aycibin]

delta overclocked my core by 55mhz :) i know it also as a second clock generated by gpu.but also heard that manufacturers can put limits to cards with this.2fink also has a 7300gt i think.so he can answer this better ;)

are you able to you find the mem vmod point,SR58 ?

[2fink]

delta-clock underclocks the geometric-part of the gpu which often limits the oc.

if you clock with your gpu-core with 500mhz (-100delta), your geometric-part is only running @ 400mhz, so you can normally clock the core higher until you reach the limit again.

to mod the delta, you can use nibitor. no hardware-mod needed, all by bios!

[massman]

@ massman: are you sure about the ram, could you give me a link to the datasheet?

http://www.infineon.com/upload/Document/HYB18H512321AF_Rev1.73_2005-08-18.pdf

[Rudyn]

delta-clock underclocks the geometric-part of the gpu which often limits the oc.

if you clock with your gpu-core with 500mhz (-100delta), your geometric-part is only running @ 400mhz, so you can normally clock the core higher until you reach the limit again.

Ok, on the 3D clock settings I've got 500 / 500 with a delta value of 0. What is the ideal value I have to put there? Is it 165? My card only max at around 530/780 and if I raise the core again 3DMark score starts to degrading. :mad:

I've got the Palit 256MB 7300GT Sonic DDR3

[aycibin]

it is 156(-100),not 165.degrading starts because increasing gpu too much,causes some freezes.framerate also decreases.its normal.ideal value depends on the card or temp.-100 is an average value.you should fine tune later to get the optimal values.

if 500mhz gpu with -100 delta is geometrically runing @ 400mhz,then is the performance equal to gpu @400mhz with delta 0 ? besides;this delta clock is said to be enabled by the card automatically when a game is running.so its like a spare 40-50mhz.when we set delta to a - value,we use this spare mhz next to gpu in stead of using it only while gaming.is this right?if it is so,there will be no change while gaming.

[Rudyn]

Just wondering how much performance you can increase after changing delta to 156. In the end you can add like 40-50 more on the core right? As far as I know performance increasing much from memory boost not core clocks.

I will test that out later as I'm in the middle of reinstalling WinXP

[aycibin]

i think gpu vmod is ok by now.testings can be done later.but how shall we boost mems with vmod on SR58? i still can't find this one on the pcb! i'm going to be starting by this week as my new cooler arrives.

[mitsirfishi]

dont worry rudyn my card when i 1st got it wouldnt overclock at all and i was getting annoyed but try the 91.47 drivers they seem to work good for me and once you got your optimal oc settings from coolbits then just keep working the memory up mine went up to the max it would go so power strip had to come out :P and my card doesnt seem to do the delta thing i opened rivatuner and doesnt seem to do it at all so dont know why

[Fr3ak]

Here are the pictures I promised to upload. Took a bit longer than planned, but better late than never:

http://ftp.tnib.de/pub/team-coca/member/freak/s_CIMG3821.JPG

http://ftp.tnib.de/pub/team-coca/member/freak/s_CIMG3837.JPG


And about the delta:
Stock 7300GT has a delta of 0, which means the geo unit runs as fast as the core, in 2D as well as in 3D.
But the geo unit cant clock as high as the gpu in most cases, so you set a lower delta, which means the geo unit runs slower than the gpu.
For example: Lets say your card maxes out at 600mhz core with a delta of 0.
Now you set the delta to a lower value to test what the max gpu speed is. You can take a low value, I use -128 (128 in Nibitor), which is the lowest possible value.
To make the calculation a bit easier, we flash the 600Mhz core card to a delta of -100, which means the geo unit now runs at 500Mhz when the core is set to 600Mhz.
With a delta of -100 the cards now maxes out at 650Mhz core (550mhz geo unit).
Now you have found out that the max of the geo unit is 600Mhz and the max the core can run is 650Mhz => a delta of -50 would be ideal, because the core would run at 650Mhz and the geo unit at 600Mhz.
In practise, it might crash at that speed, so you have to play a bit around with different values, but it should be stable +-10Mhz.

To dislplay the clocks use Rivatuner and enable the OSD, so you can see what everything is clocked at.
If you get a lower 3D Mark score means that the card isnt stable and clocked itself down to stock settings after a wrong calculation.

Edit: I know someone who ran the memory cooled by a 120 Yate Loon at 2.4V. Now he cant run as high as he could before at lower volts, so you might be carefull.
Infineon rates the AFL20 at 1.8V for a reason. Palit runs them with 1.98V. Personally I wouldnt run them beyond 2.1V, apart from a suicide bench session ;)
Going from 1.98v to 2.05V didnt improve mem clocks much. 2-3Mhz only and a high core results in a bigger improvment than memory. With 800Mhz+ a higher memory bandwith might have a bigger effect.

I noticed that above 1.35VGPU doesnt gain you that much. Until 1.35V the core scaled very well, above that its getting worse.

If you want to know how much 3D Marks increased with several speeds, have a look at the pictures I posted at a German OC forum:
http://www.forumdeluxx.de/forum/showthread.php?t=232579&page=15

[massman]

Great post.

What are your results with the delta modding ? (delta -50 is best?)

[Fr3ak]

Honestly I dont know. I am running -128. Havent fine tuned that yet and I dont think I will. 30Mhz more or less for the geo unit doesnt affect scores that much when running 900Mhz+ core.
With the second card I was able to bench up to 615Mhz with a delta of 0 and 720 with a delta of -100. Didnt do further testing, as it takes ages to determine the exact voltage. I upped voltage by 0.2V and tested both cards for max 01,03,05,06 and aq3. Didnt do delta fine tuning, because it already took long enough to find the max speed for each benchmark with a delta of -128.
Maybe there are some values that are faster than others, like -50 being faster than -40, though the clock is slower, I dont know. With my cards the geo unit is limiting me even with a delta of -128 from what I can tell.
When I am done with benching I will fine tune the delta.
I will be running about 800/800 1.35V 24/7. That is 7600GT default voltage, so it shouldnt hurt the gpu. And above that the core needs much more voltage for a better oc.
With 1.5v I can run 845/800, but those extra 45Mhz arent worth the extra 0.15V.
I made a handwritten list about what I can run at what speed and voltage. Will post that aswell when I have the time to.

I am going to get a second stick of ram first, before I continue with the benching. Running 1.7V for half an hour already hurt the max oc of the card, so I only want to bench them once at that voltage.

[massman]

1.7v hurts the max oc ?

Looks very strange to me; I once modded my 6200 to 2.0v and the max. kept the same.

It would be really handy if you post you handwritten results here. I really have to prepare the dice session if I want to do some serious tests ;)

[Fr3ak]

Yes, I lost about 20Mhz of the max possible speed. But the cards behavior was strange at that voltage anyway and I havent tested it again after that.
Windows failed by booting and odd stuff like that.

Could have been as well an issue with my energy provider, I dunno. Wasnt running my ups for the benches, so I cant tell.

[aycibin]

i prefered pencil method and i can say that r23 works fine for gpu vmod!

@Fr3ak: you mentioned SR58 for vmodding mems with pencil.i checked my infenion mems.their standard voltage is 2v so they have some way to go further think :) but i coludn't see where SR58 is :(

my vf900 has arrived :) so as soon as i install it,i'll also put the results for pencil method.my first target is 750+/800+

[mitsirfishi]

alright tell us your clocks and see what you get in 3d mark 03 and 05 when you get it modeed

[Fr3ak]

According to Infineon specs AFL20 is supposed to run at 1.8V. AF20 at 2V. Palit runs the AFL20 at 1.98V.
What rams do you have?

Some of my results can be found here:
http://www.xtremesystems.org/forums/showthread.php?t=111799

and here:
http://www.xtremesystems.org/forums/showthread.php?t=112886

I am finally getting a second stick of ram, so I will do some final benching once its here.

[mitsirfishi]

your 01 score rocks but i only have a pentium 920 D :/ i gota wait for my asus board to come back which is in the next 5 days :D running on 2600 barton at 2.2 :P legendary with 5950ultra

hope to get good overclocks from my 920 atleast 4ghz and then im going to be doing some serious benching and vmodding

[aycibin]

mitsirfishi of course! but first of all i need to apply a vmod also to mems :rolleyes:

has the code HYB18H512321AF-XP so it is 2v & 1.4ns by def.i checked the datasheets before ;) this is different than other palit 7600GSs i know.

[mitsirfishi]

1.4 ns on stock volts and timmings should do what around 1.6ghz 2v should be fine on ddr3 unless if your going for some hardcore benchmarks :P but you should get good clocks on stock vmemory even ddr2 doesnt require anything much more than 2v or it starts warming up abit . is there any record for a 7600gs on air ? and same for 7300gt's i fancy a go going suisidal

Fr3ak what would you say is the highest voltage i should go with a zalman v900 with the fan flat out as ive already modded my card and i get a reading of 1.4v which i think should be fine or is there anything else you reccommend for air/water/phase

[Fr3ak]

aycibin: I didnt noticed you were talking about a 7600GS all the time.
The mods mentioned are for the 7300GT 256MB, so you might have a different layout.

mitsirfishi: Considering 1.35V is 7600GT stock voltage and 7300GT uses the same g73 chip, 1.4V should be dine fir 24/7 usage.
I am running my cards at 1.35V for 24/7 because they dont clock that much higher with more volts, so I dont want to risk to lose them unnesessarily.

As for benching, its all up to you ;)

[aycibin]

@fr3ak: actually no,the layout is the same with 7300gt.i checked that in each topic also.thats why i'm only interested in this topic :) i applied r23 mod for gpu successfully(1.15v@1.25v now @660mhz) as it was for 7300gt as you menitoned before.so i need to find where SR58 is for my mems :( i'm always measuring the voltages & temps to be sure that i'm on the right way.

i will try some records by air i hope :)

is this right?found on the backside of the card
http://img153.imageshack.us/img153/1696/dsc00080vt7.jpg

[Fr3ak]

Yes that looks pretty much like it.
Its close to the vmem regulating chip.

[mitsirfishi]

http://img155.imageshack.us/my.php?image=7600gs7jc.jpg
http://img155.imageshack.us/my.php?image=gpu7ov.jpg
http://img155.imageshack.us/my.php?image=mem4ek.jpg

there you go i hope your pcb is the same as the referance 7600gs

but this is the other 1 for the 7600gs i found

http://xtreview.com/review114.htm that has everything for the 7600gs palit sonic 1 you have good luck modding :D he got some impressive results

yes aycibin the pcb's are similar and using same core and memory chips in some cases but im sure that is the one you are looking for :)

and are you sure the r34 and r37 arnt the resisters you need to mod to put some more voltage through it to get the voltage you need or you can you bios flash your gs to a gt and then put its use its voltages 1.35v i think then you would have more on the core then, could use nibitor to raise your voltage...

[Fr3ak]

You cant use nibitor to adjust voltage. That doesnt work for any new nvidia card afaik.
You have to do a hardware mod.

[aycibin]

this is the one i have.i shot them myself
http://img270.imageshack.us/img270/1637/dsc00042oi2.jpg
http://img133.imageshack.us/img133/3081/dsc00043fc6.jpg
neither referance pcb,nor the pcb in the vmod review.i read that review before(still in my favorites list :) ).so you see,no design difference with your 7300GTs ;)

i appiled 1.3v from nibitor and yes it doesnt effect anything.now i decreased r23 from 440ohm to 370ohm and reached ~720mhz for gpu.there were some screen defects in 728mhz :(

is sr58 that i marked right for mems?

[Fr3ak]

Its right for 7300GTs and you have the same layout, so most likely yes.
But you have different ram, so I am not 100% sure.
Pencil iy slightly to see if memory voltage increased.

[aycibin]

also crashed at 1.3v@720mhz after my retry with atitool find max core option.so i did it myself.705mhz was stable and temp was max 53C.

then increased the voltage more.i reached 1.45v@725mhz stable so far with 3dmark03.actually i think this is the highest value that i can obtain by pencil modding for gpu.resistor is full of 5B graphite now :) temp is max 53C again so its not the problem.but its quite difficult to go further with only modding this resistor.maybe i can also put some graphite on the legs of the chip (pin3 & pin6) you used.

[Fr3ak]

Pencil R24 to increase volts a little further.

[aycibin]

ok i'll try it too.but i'm afraid sr58 didn't work.i put some graphite on it but vmem was still the same.so i canceled it :(

[Fr3ak]

Hmm too bad it didnt work. I have confirmed info that it worked with two different 7300GTs. Maybe your ram being AF14 makes a difference here.

[aycibin]

i think there is a connection between r23 and r24.the values were nearly equal for both.then as i pencilled r24 till 340ohm,and r23 was also the same again.i don't know why.so i managed to reach 1.5v@745mhz on gpu with that.max temp is 60C.then 1.6v@780mhz with max 69C :D this is ok for gpu.maybe i can fine tune delta clock again.

yeah that may be the difference of AF14 rams :( i'll try to pencil PW7120's pins instead.they were 740 without ramsinks and now 765 with my custom ramsinks.i bent the leaves for better air spread and twin ocz for each :D just waiting for being boosted!
http://img90.imageshack.us/img90/9213/7600gs005vi3.jpg

[mitsirfishi]

aycibin can you post some benchies of what scores your getting because you have reasonable clocks :D your 7600gs looks like a 7300gt with just a couple of bits here and there different with what should be a 7600gt core ill get some benchies up when my new mobo comes back from asus as it has been rma'ed :D

[aycibin]

actually i got this 7600gs with the same price as 7300gt :)

i'm sorry for misguiding about sr58 mod at my previous post.i tried it again and it worked this time.now mems are @2.25v with 810mhz :D 3dmark 01,03,05,06 are successful without any artifacts or any problems.

by the help of my big&custom sinks,i could put some more voltage.because they are not too hot by now(cooler than default 9800xt mems).but there is a safe limit for voltage regulator(APW7120 (http://www.anpec.com.tw/products/download/APW/Apw7120/Apw7120.htm)) used on this card.it is also same in 7300gt.datasheet writes "118% Over-Voltage Protection".which refers to 1.6v for gpu and 2.29v for mems.so i'll decrease vgpu to ~1.55v just in case.i think it will reduce to 760-765mhz.

i didn't take bench scores because i ran the 3dmarks one after other respectively to be sure about stability.so there was no time to take a fresh breath for the card :) you know running 3dmark for several times decreases its scores.but here are some that i recorded so far just to give some idea.and rest of my sytem is not overclocked yet.i need some time like a holiday or sth :) unfortunately my job doesn't let me to have my own spare time :(

3dmark01 24000
3dmark03 15200
3dmark05 7300
3dmark06 3900(sm2:1650,hdr/sm3:1500,cpu:1500)

[mitsirfishi]

yo fr3ak i found your beasty sli score on the orb does running dx6 and win server 03 give any advantages at all or that just your os your using ? :P because i got it but not tried it out yet and woundering if any inprovement or is it just a bug :P

[Fr3ak]

I am using a special XS OS. Its DX9.0c, dunno why it says DX6. My XP Pro install is kinds old, so I only used it for 01 and 06.

I am not so sure what the overvolt protection does. I ran 1.7V on the GPU and noticed a little higher oc than runnin 1.6, so I am not so sure if it really works.
But then again it might explain the dodgy behaviour of the card.

[aycibin]

I'm sure of beating 800mhz on 1.7v gpu easily.besides;maybe overvolting has no effect for a few tries and benches,but may effect the efficiency or behaviour of the card in long term like 6-7 months.i don't want to lose my card for a few more frames

[mitsirfishi]

good news :D i got news about my new mobo asus said old board so i got credit so im getting this cool sli board clocks well with the cpu i have and im going to purchase another 7300gt :P so im going to try and see what i can g et hopefully get a score like fr3aks :D so then beating x1900xtx's not bad for 120quid's worth of card when brought coolers aswell

http://www.overclockers.co.uk/acatalog/Online_Catalogue_Asus_177.html
7th 1 down

http://www.overclockers.co.uk/acatalog/7300_Series.html
bottem 1 :)

[aycibin]

nice but mobo seems to be out of stock :)

[OMFGROFLMAO]

so just to be sure, i would pencil in R23 to increase Vgpu voltage and SR58 for the Vmem? (i have the same card as in the first post) and what sort of pencil do i need for this? (im not confident with soldering) and wouldnt the pencil come off over time? what can i do to stop this? and i dont have a volt meter so is there some program that i can use to find out the voltages?

[Fr3ak]

No you cant use a program to measure vgpu and vmem, you need a voltmeter.
Use a soft pencil, no hard pencil and once you are down, use a peice of duct tape to cover it, so it doesnt come off.
R23 and R58 are right, but dont go crazy with memory volts. I run mine at 2.05V as they are already factory overvolted ;)

[OMFGROFLMAO]

hey can i use these to just the voltage on the gpu and mem? http://jaycar.co.nz/productView.asp?ID=RP8510&CATID=33&keywords=&SPECIAL=&form=CAT&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=802 the pins i need to attach to are buried somewhere in this thread and i cant be bothered look through right now :D i suck at soldering so can i just get some really small clips instead?

[aycibin]

clips may not be durable enough i think.if you are uncomfortable with soldering,just use its proved alternative,pencil modding like me.i pulled gpu volt a little bit down to 1.56v from 1.62v so gpu decreased from 795 to 770mhz.not much mhz loss but work about 7-8C cooler now :) 47-67C but these could have been better with an ac5 or zalman stg-1 termal paste.

here i get some scores... sorry about delay ;)
(only vga OCed)

450/500@560/700(@7600gt)
3dmark03: 13000
3dmark05 : 6000
3dmark06: 3300(sm2:1340,hdr/sm3:1215,cpu:1635)

450/500@770/815
3dmark03: 16000
3dmark05: 7800
3dmark06: 4000(sm2:1780,hdr/sm3:1410,cpu:1635)

[OMFGROFLMAO]

sweet ill just grab a soft pencil and do a pencil mod :D and how much of a difference in temps would i see if i used arctic silver 5 instead of the stuff that comes with the zalman VF900-cu? thinking of getting some with my new cpu cooler and might shove some on my vga :D

[aycibin]

i mixed def paste with arctic ceranique 3 :) assuming the ac5 comparisons as reference,there will be at least 5-6C decrease.besides there will be 3-4C decrease with zalman stg-1 with respect to ac5.decision is yours ;)


PS: i made a correction in gt clock freq in 115th post.

[mitsirfishi]

well done aycibin :D seems a good rock solid performance why dont you get sli im still having trouble with my 7300gt unfortunatly :( the core doesnt want to go above 575 :( either artifacts real bad or i just get the pc restarting :( so at the minute i was only able to achive
13000 in 03 @ 575/816
5500 In 05 @ 575/816

ive think its because the card isnt getting enough voltages through it i was thinking of making a molex connecter 12v to give it more power and tried bumping the pci-e voltage but had no affect :/

havnt tried 06 yet but i think i might have 1 with a weak core :( so i might upgrade to a x1950pro but still keep my 7300gt in my 4ghz p4 :P as 2nd pc :D

[aycibin]

@Fr3ak:
could you post your single(not sli) 560/700 or 700/800 score just to see the difference btw 7600 and 7300 architecture?then i'll post mine at the same speed ;) this can be good referance i think!

i dont think to make it sli.because;
1)more heat & less space in the case
2)this card is out of stocks in turkey.i ordered 15-20 of this for myself and some friends :)
3)i may need to replace my psu against more power consumption
4)i would prefer using a 240$ card rather than 2x120$.performance is equivalent
5)i still dont need to o/c beyond gt speeds for the games.im so satisfied with mine :)

[Fr3ak]

Could do that next weekend I guess. Havent touched my gaming rig for 3 weeks now, because I dont have the time to :/

But I dont think your 3800+ and my E6600 are comparable.
And I cant take the card out of my case, because that would mean I have to dismantle my watercooling, wh ich will take way too long.

[aycibin]

of course they are not :) but 3dmark05 and 06 are not so dependent on the test base as far as i see.so i thought that,this would be a good 7600-7300 comparison ;)

look...i have an idea :) mitsirfishi has also posted some 7300gt scores above.i can also put some 575/815 scores here.i'll post in a spare time in the following days

[sabinus]

Some more suicidal single 7300GT Galaxy on single core Venice 3800+ ;) on plain air .. for fun.
The GPU / Mem clocks are the highest I've seen everywhere.. the scores are "only" top 5 everywhere because of the Venice

Tomorrow I'll put some light overclocked E6400 Allendale scores on a friend's computer for comparison .. stay tuned :cool:

2003 http://img214.imageshack.us/img214/3906/3dmark037300gthf4.th.jpg (http://img214.imageshack.us/my.php?image=3dmark037300gthf4.jpg)
2005 http://img214.imageshack.us/img214/3879/3dmark057300rq8.th.jpg (http://img214.imageshack.us/my.php?image=3dmark057300rq8.jpg)
2006 http://img120.imageshack.us/img120/1959/3dmark067300ld1.th.jpg (http://img120.imageshack.us/my.php?image=3dmark067300ld1.jpg)

[aycibin]

7300gt(mitsirfishi's post):
13000 in 03 @ 575/816
5500 In 05 @ 575/816

7600gs:
14100 in 03 @ 575/816
6550 in 05 @ 575/816

these tests are not dependent on the system.so this shows what do the extra pipelines do for 7600...

besides sabinus's 7300gt@955/900 scores(16700(03),7600(05),3850(06)) are not too different from my 770/815 ones(115th post)

[sabinus]

You got good scores there aycibin... you have a little more help from the extra pipe/vertex and from dual-core CPU (mine is only Venice :().

As you see, it takes some serious overclocking for 7300GT to catch up with 7600GS. (both having DDR3)

As I promised, here are some results I obtained in a short bench session with a friend and his slightly overclocked E6400:

3dMark01 41043
3dMark03 17299

waiting for my own E6400 or E6600 to pull out some records ;)

[Fr3ak]

I am waiting for my ram to pull out some records aswell ;)

[aycibin]

yep...but conroe is the best choice to get a record i swear ;) and it closes the gap as i see :)
i put the blame on amd :P

Fr3ak, i suggest you ocz or geil for the best scores!you'll thank for me.

you can find the best prices on "www.idealo.de" i think

besides; ich gehe nach Essen für das neue Jahr :D

[zoran555]

Galaxy 7300GT DDR3 1.4ns 128mb PCI-e stock (500/700) here.

With a64 3200+@2.6GHz:
3dMark 05 scores:
500/700 -> 4317
561/820 -> 4819
630/792 -> 5163
===================
===================
With an sempron64 2500+@2.5GHz
3dMark 05:
500/700 -> 4148
561/800 -> 4643
630/700 -> 4676
630/800 -> 4941
653/792 -> 5004
-------------------
3dMark 05 4xAA 16xAniso:
500/700 -> 2712
650/792 -> 3147

I guess my cpu/mem is holding me back :/

[AsAsIn8eR]

Can anyone help me mod my asus en7300gt-top ddr3 128MB?I don't have a camera but I can tell you the code of what you ask me.The board clocks pretty well on the core.I achieved 63xMHz benchable after that it freezez with no artefact so I thought it's cause of voltage.I really would appreciate it.Thank you.

[Fr3ak]

I would suggest you start a need thread with that question. That way it would get more attention.
Pics will help a lot. If you cant take pictures, try to find a card with the same PCB using google or whatever search engine you prefer.
Posting the chips that are on your card might be sufficient, but its hard to give you advice without seeing some pictures.

Btw, I dont think I will do any more benching with my cards. I dont have the time to and 8300GT/GS is close to be released, so I guess I will swap my paor with a pair of low end DX10 cards.

[AsAsIn8eR]

Ok will do so.Can you please tell me something about NiBiToR and that setting with the delta?Mine is 0.What should I set it to?Thnx.BTW congratulations on your overclocking it is very impressive ;)

[Vito]

Having some probs with my Palit Sonic 7300GT DDR3 (500\1000) have it overclocked to 520\1500 atm with no probs, getting about 12.5k in 3dmark2003

What kind of pencil should I be using on R23 resistor, default is at 212 for me.

[Nerfy]

Having some probs with my Palit Sonic 7300GT DDR3 (500\1000) have it overclocked to 520\1500 atm with no probs, getting about 12.5k in 3dmark2003

What kind of pencil should I be using on R23 resistor, default is at 212 for me.

As in what kind of pencil to lower the resistance of R23?

A regular Number 2 is what you need. Go slowly, checking the resistance often.

[Calmatory]

A bit offtopic..

Someone want to tell me step-by-step that delta-thing? (whatever it is called)

How to lower the shader(?) clocks. I have neer had to deal with this kind of stuff before, as I have had many years old hardware for ages. :p

I have nibitor, and have changed the delta, saved the BIOS, and now I need to flash it? With which utility, and where might I get it? The card is Sonic one, by Palit, so it runs 500/1000(DDR) by default, and is with Infineon 2.0ns chips.

I really think that the shader is the problem, since the GPU gets unstable at 520MHz, so getting it to 600+ would be near perfect. ;p

[Calmatory]

Yay! Delta 156 quite much worked! \o/ Now the core runs at least 530 -> 560 stable(CS:S, 3DMark 01, 03, 05, 06, LFS and Soldat.) :)