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My PNY 9800GTX+ voltmod!

post #1 of 28
Thread Starter 
Here is a documentation of my first ever voltmod attempt! First off i would like to give MADMAX22 a big thanks for posting his 9800GTX+ voltmod up here, or i wouldnt have know how to do this.

Here you can see the layout of the voltmod. i used 20k trimpots for the voltage regulators. I also added 4 1500uf 6.3v capacitors that i took off an old mobo. (sorry for the quality of the picuters.)
attachment.php?attachmentid=210368&stc=1&d=1305311228

And here is the beautiful Zalman VF1000.
attachment.php?attachmentid=210369&stc=1&d=1305311228

GPU Voltage shown. (Its currently at 1.34v And the vmem is at 2.12v)
attachment.php?attachmentid=210370&stc=1&d=1305311228

I was able to get quite high on the mem clocks, weighing in at 1400MHz. but my Gpu wasn't able to get much higher than 815MHz. I think once this card gets in the mid 70's Celsius, It wont let me go any higher without artifacting.

attachment.php?attachmentid=210371&stc=1&d=1305311228

And one last shot of the computer. biggrin.gif
attachment.php?attachmentid=210202&stc=1&d=1305229807

Please let me know what you think, and if there is anything i can improve on to make this card clock better. smile.gif

EDIT* had a problem uploading pictures, They should work now.
Edited by Gouzlan - 5/13/11 at 11:30am
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post #2 of 28
cant see your pics..

Looks good though thumb.gif I think you just need to be cooler to push some more core speed. Shaders should be good for at least 2100mhz too once you lower load temps into the 50-60c range.
post #3 of 28
^^^^GPUs love water. I made a GPU water loop before I ever considered putting my CPU on water.

Looking good though. Looks like some great memory on that one.
    
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post #4 of 28
9800GTX+ have amazing cherry picked memory, you should definitely see some high clocks!
post #5 of 28
Like the additional pics thumb.gif
    
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post #6 of 28
Thread Starter 
Sweet! pics are working biggrin.gif.

I do want to make a loop for my GFX card and northbridge, however money is an issue of course, and my main card is a GTX 480... So im not really looking at investing money into a card that cant get near performance of the 480. I wish there was a way of cooling it down some more without spending money lol. I would really like to see some bigger returns on the GPU than what its at.

Also i have a question. Is it ok to have different lengths of cable attached to the capacitors? Not sure where i read this but i thought that perhaps having different lengths would increase the ripple effect thus lowering the effectiveness of the capacitors?
Edited by Gouzlan - 5/13/11 at 12:24pm
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post #7 of 28
See if you can get some VRM cooling
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post #8 of 28
My BFG 9800GTX+ OC is sitting here at 81% fan, idling at 41c loading near 50 at stock clocks on the stock cooler.


I don't like you.rolleyes.gif
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post #9 of 28
Thread Starter 
Quote:
Originally Posted by sLowEnd;13492320 
See if you can get some VRM cooling

I thought about cooling the VRM's, however they never get too hot. Even while loaded up i can still touch them without getting burned. And they cool down extremely fast after a load is taken off. So i think they should be good.

If it will help with stability though i will definatly try it. Are there any vrm coolers you recommend?
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post #10 of 28
Quote:
Originally Posted by Gouzlan;13492271 
Also i have a question. Is it ok to have different lengths of cable attached to the capacitors? Not sure where i read this but i thought that perhaps having different lengths would increase the ripple effect thus lowering the effectiveness of the capacitors?

It may if the circuit is sensitive to excessive noise..but it could have just needed more capacitance..so its hard to say really. Most folks will tell you its bad news.. bottom line is -> did the caps bring additional clocks..?

-If the answer is Yes..then dont worry about it wink.gif
-If no, you may want to solder them direct and test again...
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