8800GTS 320 MB Overclocking Questions

KickAssCop · 02-26-07, 08:56 AM

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.

Jon · 02-26-07, 11:33 AM

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

KickAssCop · 02-26-07, 12:04 PM

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.

Jon · 02-26-07, 03:46 PM

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).

SLippe · 02-27-07, 03:22 PM

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.

KickAssCop · 02-27-07, 09:22 PM

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

.

02-26-07, 08:56 AM	#1
KickAssCop Registered User Join Date: Jun 2004 Posts: 432	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. __________________ Intel Q6600 @ 3.2 GHz (400X8 FSB) \| Gigabyte GA-P35-DS3L Rev 2.0 \| Sapphire ATi 5850 @ 825/1175 \| 250 GB WD SATA2 16 MB \| 80 GB Seagate SATA 8 MB \| 4 GB G.Skill DDR2 800 @ 1000 5-5-5-15 \| Liteon 16X DVD RW \| Samsung 22" 1680*1050 \| Logitech G5 \| FSP 600W PSU

02-26-07, 11:33 AM	#2
Jon Registered User Join Date: Nov 2002 Posts: 560	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 __________________ Intel i5-2500K (4Ghz)\|2 x Nvidia 560GTX TI (880/2100mhz)\|Crucial M4 SSD 12GB GSkill PC3-12800 (1600Mhz 9-9-9-24)\|Thermaltake Tough Power 700w\|Razer Megalodon 7.1 Headset BENQ XL2410T 24" 3D Monitor

02-26-07, 12:04 PM	#3
KickAssCop Registered User Join Date: Jun 2004 Posts: 432	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. __________________ Intel Q6600 @ 3.2 GHz (400X8 FSB) \| Gigabyte GA-P35-DS3L Rev 2.0 \| Sapphire ATi 5850 @ 825/1175 \| 250 GB WD SATA2 16 MB \| 80 GB Seagate SATA 8 MB \| 4 GB G.Skill DDR2 800 @ 1000 5-5-5-15 \| Liteon 16X DVD RW \| Samsung 22" 1680*1050 \| Logitech G5 \| FSP 600W PSU

02-26-07, 03:46 PM	#4
Jon Registered User Join Date: Nov 2002 Posts: 560	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). __________________ Intel i5-2500K (4Ghz)\|2 x Nvidia 560GTX TI (880/2100mhz)\|Crucial M4 SSD 12GB GSkill PC3-12800 (1600Mhz 9-9-9-24)\|Thermaltake Tough Power 700w\|Razer Megalodon 7.1 Headset BENQ XL2410T 24" 3D Monitor

02-27-07, 03:22 PM	#5
SLippe R.I.P. Babe Thread Join Date: Jun 2004 Posts: 12,387	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.

02-27-07, 09:22 PM	#6
KickAssCop Registered User Join Date: Jun 2004 Posts: 432	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 . __________________ Intel Q6600 @ 3.2 GHz (400X8 FSB) \| Gigabyte GA-P35-DS3L Rev 2.0 \| Sapphire ATi 5850 @ 825/1175 \| 250 GB WD SATA2 16 MB \| 80 GB Seagate SATA 8 MB \| 4 GB G.Skill DDR2 800 @ 1000 5-5-5-15 \| Liteon 16X DVD RW \| Samsung 22" 1680*1050 \| Logitech G5 \| FSP 600W PSU

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
P4 overclocking - how do you do it?	saturnotaku	CPUs, Motherboards And Memory	1	08-15-02 08:52 AM