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I'm sure I can go farther, but how much?

post #1 of 5
Thread Starter 
I have a simple folding rig that has a 9800GT single slot card. I had left it stock for a while, and was getting 8-9 WU done a day, with about 4200-4700PPD. I overclocked it from 600Mhz core and 1500Mhz shaders to 712Mhz core, and 1728Mhz shaders. I just left them linked, and raised it little by little, testing with Kombustor, with the highest temp being low 70s.

This allowed me to get a solid 10 WU a day, and 500-5300 PPD. I'm sure I can go farther, but being out of the nvidia overclocking for a while, figured I'd ask for some suggestions to try when I get home.

So, what kind of changes can I make, and what type of increase in PPD will I get?
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Hephaestus
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post #2 of 5
you might be able to push up the core to 750mhz and even if you drop the ram speed as its not needed as much for folding you might make it to 780mhz but youll want to find a way to get those temps down, being at 70*C and over is going to start to effect the overclock outcome in my opinion.

maybe as simple as a fan on the side panel would drop the temps a bit, even some new thermal paste and a clean out.

as for the PPD youll get im not really able to answer that, dont use folding as much as id like and have no real experience with Nvidia, but im planning on getting 4 GTX570's for folding. but if 115mhz increase gains 700 PPD more then an extra 50mhz would get maybe another 300PPD
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by Kal777;15529323 
you might be able to push up the core to 750mhz and even if you drop the ram speed as its not needed as much for folding you might make it to 780mhz but youll want to find a way to get those temps down, being at 70*C and over is going to start to effect the overclock outcome in my opinion.

maybe as simple as a fan on the side panel would drop the temps a bit, even some new thermal paste and a clean out.

as for the PPD youll get im not really able to answer that, dont use folding as much as id like and have no real experience with Nvidia, but im planning on getting 4 GTX570's for folding. but if 115mhz increase gains 700 PPD more then an extra 50mhz would get maybe another 300PPD

70c is well and good for a 9800GT, since the cut off point would be like 100c. Plus, during folding, it doesn't get higher than 64c, so I'm not worried about temps. I haven't touched the memory.

attachment.php?attachmentid=236936&stc=1&d=1320150650
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Hephaestus
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post #4 of 5
I was able to push 740 core/1480 shadder with my old 9800gt SS.

Now on the old cards, you can unlink the shadders. That let me crank the shadders up to nearly 1550. I had to drop the core to stock and ram at stock as well to keep it cool and within the vcore set.
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post #5 of 5
As Russian says, unlink those and push up the shaders as high as they will go. Then if it wants more, get the core and then memory up aswell. The memory won't be significant but it will help no doubt. I'm running a 9800GTX 799/1152/2052 and that's been running like that for the good part of a year folding 24/7.
Edited by arvidab - 11/1/11 at 4:24pm
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