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Old 02-26-07, 08:56 AM   #1
KickAssCop
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Default 8800GTS 320 MB Overclocking Questions

I have a BFG Tech Geforce 8800GTS OC 320 MB which came stock clocked at 550 core/800 memory. The shader clock speed is 1300 Mhz. Is there any way to increase the core and memory speed without altering the shader speed for this card. Since I think that my overclock is being hampered by the shader clock increase. For example when I run the card at 600/850 core/mem speeds the shader clock is reported by Rivatuner at 1400 Mhz. The card works fine at 625/875 Mhz but hardlocked at 650/900.

Any help would be appreciated. Thanks.
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Old 02-26-07, 11:33 AM   #2
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Default Re: 8800GTS 320 MB Overclocking Questions

Mine won't do 650 core either. 625 is alright for a while but then freezes sometimes. So I settled for 600 which is great! (Shader is at 1350)

To answer the shader question, scroll a bit down this thread and there is a lookup table of core/shader speeds:

http://www.nvnews.net/vbulletin/showthread.php?t=86668
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Old 02-26-07, 12:04 PM   #3
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Default Re: 8800GTS 320 MB Overclocking Questions

That chart is very nice indeed. It actually lists exactly the behavior of my card. Presently I set it to 625 and got a shader clock of 1458 in Rivatuner. I am not the one to flash bios or anything so I guess I will settle for 625/875 for now . Thanks for the info Jon.
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Old 02-26-07, 03:46 PM   #4
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Default Re: 8800GTS 320 MB Overclocking Questions

No worries... just curious, have you tried 625/900? The guy who wrote the bios in the thread I pointed to reckons all 8800 GTS's will do 600/900 and its within the manufacturers tolerance (which allows for 3rd partys to overclock the cards).
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Old 02-27-07, 03:22 PM   #5
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Default Re: 8800GTS 320 MB Overclocking Questions

I ran mine at 650/2000 for a while, but wasn't completely stable. I tried 626/2000 (overclocked GTX) and that didn't work either. So, my conclusion is that the memory won't do 2000, at least on mine. I ran stock for a while, but have had it at 600/900 for about 2 days now and is solid. I could probably bump the core up more, hell, it's fast enough.
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Old 02-27-07, 09:22 PM   #6
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Default Re: 8800GTS 320 MB Overclocking Questions

I just tried 625/1050 for my card and it ran fine in 3dmark05 giving me a whopping score of 12694 .
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