Water Cooled 8800 Ultra OC Advice

1138 · 03-24-08, 07:48 PM

I have my EVGA 8800 Ultra water cooled and would like to try to overclock it. What is a reasonable amount to overclock the 8800 Ultra without damaging it, I'd like it to last 2-3 years?

(EVGA 8800),(Core),(Memory),(Shader)
Stock, 612, 1080, 1.51
KO, 636, 1125, 1.63
Superclocked, 655, 1125, 1.66

ChinStrap · 03-24-08, 08:17 PM

most will do 702rop (core) stable.

the core revision on the Ultra is an 'A3' where as the GTX's got the 'A2' - the A3's have shown the ability to clock greater then 700core on AIR @ stock voltage quite frequently. i had an 'A3' cored GTS (g80) that i could bench @ 729core with an upped fan speed duty cycle. since your on water i would think 700 would be a good place to start.

jason4207 · 03-24-08, 08:19 PM

You're not going to damage anything just by OCing. Volt-modding is a bit risky, though.

Your covered under warranty for just OCing, though.

See what she'll do!

Should be able to get at least 700 on the core I think.

Edit: too slow on the 700 comment.

1138 · 03-24-08, 09:01 PM

I used RivaTuner to set my card to Superclocked specs 655 GPU, 1125 MEM, 1.66 Shader and got 14345 3DMarks.

Thanks, I'll try 700 on the GPU. Is it better to link the GPU and the Shader? Can the Shader handle 1729MHz?

jason4207 · 03-24-08, 09:08 PM

Unlink them, and see what each will do in turn.

1138 · 03-24-08, 09:30 PM

700 seems ok 14732 3DMarks this time with the GPU & shader linked. GPU temp was 47-48C MAX. during Unreal Tournament III and it is 81.5F in my office.

Surfrider77 · 03-24-08, 10:01 PM

I had my Superclocked running at 705, but had Rivatuner upping my fan speed. Your watercooled should do considerably better... and quieter!

1138 · 03-24-08, 10:08 PM

712 & 730 passed a 3DMark06 run, but 750 locked up on 3DMark06.

730 GPU Temp was only 49C under load, Do I need to read about more volts?

I like the 18.0 GPixel/s & 50.4 GTexel/s numbers.

ChinStrap · 03-24-08, 10:13 PM

729rop was the highest i could get my 'A3' cored GTS (g80) to bench stable on AIR with fan speed at 100% - i think unless you hardmod the GPU 729 is the highest she will go. but hey, 729 overclocked Vs. 612 stock - not to bad IMO.

1138 · 03-25-08, 12:35 AM

The hardware monitoring in RivaTuner is not showing what I set the GPU/shader/mem to but gpuz is. Which one is correct?

Here is what I have them set on.......Which app is correct???

cabose1227 · 03-25-08, 01:10 AM

I would think rivatuner would be because thats what you set it with but whichever one tells you what you put in should be right.

jason4207 · 03-25-08, 11:43 AM

RT Hardware Monitor is correct. These cards are based on a 27MHz crystal, so clock speeds jump up in factors or multiples of 27. Sometimes you have to move the slider quite a bit to get to the next step.

I'm not sure why GPU-Z reports incorrectly.

03-24-08, 07:48 PM	Thread Starter #1
1138 Registered Join Date: Dec 2007	Water Cooled 8800 Ultra OC Advice I have my EVGA 8800 Ultra water cooled and would like to try to overclock it. What is a reasonable amount to overclock the 8800 Ultra without damaging it, I'd like it to last 2-3 years? (EVGA 8800),(Core),(Memory),(Shader) Stock, 612, 1080, 1.51 KO, 636, 1125, 1.63 Superclocked, 655, 1125, 1.66
	QUOTE Thanks

03-24-08, 08:17 PM	#2
ChinStrap Join Date: Sep 2006 Location: Cedar Rapids, IA	most will do 702rop (core) stable. the core revision on the Ultra is an 'A3' where as the GTX's got the 'A2' - the A3's have shown the ability to clock greater then 700core on AIR @ stock voltage quite frequently. i had an 'A3' cored GTS (g80) that i could bench @ 729core with an upped fan speed duty cycle. since your on water i would think 700 would be a good place to start. __________________ Working on a re-build. A few of us Benchmark. You Should join us
	QUOTE Thanks

03-24-08, 08:19 PM	#3
jason4207 Senior Member Join Date: Nov 2005 Location: Concord, NC	You're not going to damage anything just by OCing. Volt-modding is a bit risky, though. Your covered under warranty for just OCing, though. See what she'll do! Should be able to get at least 700 on the core I think. Edit: too slow on the 700 comment. __________________ MAIN RIG: 3570K @ 4.5GHz 1.272v H100i Extreme4-Z77 8GB-G.Skill @ 2200MHz 9-11-11-28 1.60v CM_430-Elite GTX670_DCuII_TOP @ 1358/7244 1.212v Xplosion-DTS 256GB-Samsung_830 1TB-Black Seasonic_X-750 27.5"-1200P-LCD Z5500-5.1 \|\| PLV-Z4_720P_Projector_95" Paradigm_6.1_DTS-ES G9_Mouse Logitech_Illuminated_KB Logitech_G27_Wheel+Microsim_Racing_Pod *HEAT* GAMING HTPC: i3-550 @ 4.5GHz 1.35v H70 MSI_H55M-ED55 4GB-G.Skill @ 1875MHz 7-9-7-23 1T GTS450 @ 970/1940/2100 240GB_Sandisk_Extreme 640GB_Blue Corsair_CX430 Panny 42S2 1080P Plasma unRAID FILE SERVER: E5200-M0 @ 2GHz 0.856v MSIP43Neo3-F 4GB-Corsair @ 800MHz CM590 Antec550W 19TB-Parity_Protected_Storage / 1TB-Cache / 2TB-Parity / 10x2TB 2x1TB
	QUOTE Thanks

03-24-08, 09:01 PM	Thread Starter #4
1138 Registered Join Date: Dec 2007	I used RivaTuner to set my card to Superclocked specs 655 GPU, 1125 MEM, 1.66 Shader and got 14345 3DMarks. Thanks, I'll try 700 on the GPU. Is it better to link the GPU and the Shader? Can the Shader handle 1729MHz?
	QUOTE Thanks

03-24-08, 09:08 PM	#5
jason4207 Senior Member Join Date: Nov 2005 Location: Concord, NC	Unlink them, and see what each will do in turn. __________________ MAIN RIG: 3570K @ 4.5GHz 1.272v H100i Extreme4-Z77 8GB-G.Skill @ 2200MHz 9-11-11-28 1.60v CM_430-Elite GTX670_DCuII_TOP @ 1358/7244 1.212v Xplosion-DTS 256GB-Samsung_830 1TB-Black Seasonic_X-750 27.5"-1200P-LCD Z5500-5.1 \|\| PLV-Z4_720P_Projector_95" Paradigm_6.1_DTS-ES G9_Mouse Logitech_Illuminated_KB Logitech_G27_Wheel+Microsim_Racing_Pod *HEAT* GAMING HTPC: i3-550 @ 4.5GHz 1.35v H70 MSI_H55M-ED55 4GB-G.Skill @ 1875MHz 7-9-7-23 1T GTS450 @ 970/1940/2100 240GB_Sandisk_Extreme 640GB_Blue Corsair_CX430 Panny 42S2 1080P Plasma unRAID FILE SERVER: E5200-M0 @ 2GHz 0.856v MSIP43Neo3-F 4GB-Corsair @ 800MHz CM590 Antec550W 19TB-Parity_Protected_Storage / 1TB-Cache / 2TB-Parity / 10x2TB 2x1TB
	QUOTE Thanks

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03-24-08, 09:30 PM	Thread Starter #6
1138 Registered Join Date: Dec 2007	700 seems ok 14732 3DMarks this time with the GPU & shader linked. GPU temp was 47-48C MAX. during Unreal Tournament III and it is 81.5F in my office.
	QUOTE Thanks

03-24-08, 10:01 PM	#7
Surfrider77 Member Join Date: Jan 2006 Location: Abroad...	I had my Superclocked running at 705, but had Rivatuner upping my fan speed. Your watercooled should do considerably better... and quieter! __________________ Corsair 600T ASUS Z77 V-Pro Intel 3770K 4.5GHz - 1.20vCore 16GB G.Skill @ 2400MHz Two EVGA 670 in SLI - P14.6k 3DM'11 - X-Fi Titanium Fatal1ty 180GB Intel 520 SSD Corsair AX850 Power Supply 5x2TB RAID5 Storage - Synology DS1010+ NAS 4x1TB RAID5 Storage - Synology DS409 NAS
	QUOTE Thanks

03-24-08, 10:08 PM	Thread Starter #8
1138 Registered Join Date: Dec 2007	712 & 730 passed a 3DMark06 run, but 750 locked up on 3DMark06. 730 GPU Temp was only 49C under load, Do I need to read about more volts? I like the 18.0 GPixel/s & 50.4 GTexel/s numbers.
	QUOTE Thanks

03-24-08, 10:13 PM	#9
ChinStrap Join Date: Sep 2006 Location: Cedar Rapids, IA	729rop was the highest i could get my 'A3' cored GTS (g80) to bench stable on AIR with fan speed at 100% - i think unless you hardmod the GPU 729 is the highest she will go. but hey, 729 overclocked Vs. 612 stock - not to bad IMO. __________________ Working on a re-build. A few of us Benchmark. You Should join us
	QUOTE Thanks

03-25-08, 12:35 AM	Thread Starter #10
1138 Registered Join Date: Dec 2007	The hardware monitoring in RivaTuner is not showing what I set the GPU/shader/mem to but gpuz is. Which one is correct? Here is what I have them set on.......Which app is correct???
	QUOTE Thanks

03-25-08, 01:10 AM	#11
cabose1227 Member Join Date: Dec 2007 Location: California 805 ftw	I would think rivatuner would be because thats what you set it with but whichever one tells you what you put in should be right. __________________ \m/ OverClockers mATX L33T Club \m/ New Rig : D, thanks to all the people in the classifieds hooking it up with the good parts! Silverstone FT03 Titanium ASUS Maximus V Gene Intel i5 3570k @4.8 ghz/ s1283 ATI HD 5970 Corsair Dominator Platinum 2x8 1600 Antec 650W 80 plus Platinum OCZ Vertex 4 120gb WD Re4 500gig WD Veloci Raptor 300gb HEAT : caboose1227
	QUOTE Thanks

03-25-08, 11:43 AM	#12
jason4207 Senior Member Join Date: Nov 2005 Location: Concord, NC	RT Hardware Monitor is correct. These cards are based on a 27MHz crystal, so clock speeds jump up in factors or multiples of 27. Sometimes you have to move the slider quite a bit to get to the next step. I'm not sure why GPU-Z reports incorrectly. __________________ MAIN RIG: 3570K @ 4.5GHz 1.272v H100i Extreme4-Z77 8GB-G.Skill @ 2200MHz 9-11-11-28 1.60v CM_430-Elite GTX670_DCuII_TOP @ 1358/7244 1.212v Xplosion-DTS 256GB-Samsung_830 1TB-Black Seasonic_X-750 27.5"-1200P-LCD Z5500-5.1 \|\| PLV-Z4_720P_Projector_95" Paradigm_6.1_DTS-ES G9_Mouse Logitech_Illuminated_KB Logitech_G27_Wheel+Microsim_Racing_Pod *HEAT* GAMING HTPC: i3-550 @ 4.5GHz 1.35v H70 MSI_H55M-ED55 4GB-G.Skill @ 1875MHz 7-9-7-23 1T GTS450 @ 970/1940/2100 240GB_Sandisk_Extreme 640GB_Blue Corsair_CX430 Panny 42S2 1080P Plasma unRAID FILE SERVER: E5200-M0 @ 2GHz 0.856v MSIP43Neo3-F 4GB-Corsair @ 800MHz CM590 Antec550W 19TB-Parity_Protected_Storage / 1TB-Cache / 2TB-Parity / 10x2TB 2x1TB
	QUOTE Thanks

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