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My 7900 GTO won't go any higher! - Page 2

post #11 of 16
Check this out for the 1.55 vmod...

http://www.overclock.net/nvidia/8813...ed-700mhz.html

and here is his faq (its really well done!)

http://www.overclock.net/faqs/88174-...d-dummies.html

Quote:
Originally Posted by xiongboi_91 View Post
Wow, 718/805 on stock voltage. My PNY 7900GT only goes to 560/860 on stock.
Thats because the stock voltage for the 7900 GT is only 1.3... the stock voltage for the 7900 GTO is 1.4.

PS. I am almost 100% sure that the PCB layout on the GTX (and thus the GTO) was the exact same as the PCB layout of the GT, however, I cannot remember for sure. Please do some more research in order to confirm this before doing said mod! Lastly... here is a pic of my old 7900 GT vmod (1.4volts):

http://www.overclock.net/gallery/sho...0/ppuser/21895
post #12 of 16
Thread Starter 
What's a safe temperature for the 7900 GTO?
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post #13 of 16
Quote:
Originally Posted by jellis1324 View Post
What's a safe temperature for the 7900 GTO?
Upwards of 60c is a safe operating temp for the G71 chip... I dont think they start thermal throttling till 80c. That being said I would suggest keeping it under 70 at the max. Just remember, the cooler the better.
post #14 of 16
Thread Starter 
hehe thanks.. one last question.. How long does it usually take for ATItool to automatically find the max frequencies?
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post #15 of 16
Quote:
Originally Posted by jellis1324 View Post
hehe thanks.. one last question.. How long does it usually take for ATItool to automatically find the max frequencies?
A few minutes. I usually just find them myself manually.

That is a great overclock for stock voltage.

I'm afraid to try the pen trick...I'm not convinced the performance gained is worth the risk.
    
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post #16 of 16
I voltmodded my 7900GS KO from 500/690 stock to 700/1000. With a VF900, it got 10 degrees hotter from 34C to 44C, but the performance gained for me is more than worth the risk.
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