8800 GT Overclock Results Thread

wrangler said:
Evga SSC 770/1786/2000 3DMark06 14400. Rig in sig except 3dmark was run in XP.

AtiTool gives me a few blips at 780 (nothing visible but it dings and restarts the clock every so often so I set it back a little). Stock cooler with fan @ 70%, load max temp is 64.

No love on the shaders though. Reason I put 1786 is because thats what Rivatuners hardware monitoring detects. I can put it to 1800 (still detects 1786) but anything over that and Rivatuner detects it at 1836 and I start getting errors so shaders obviously still jump in certain steps even though I've selected to clock them independently.
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Hmm, i think your right

I put the shader at 1801, i get 1782, i put the shader at 1809, its still at 1782, i put the shader at anything OVER 1809, and i get 1836 on shaders.

I think its a bug with rivatuner, anyone else experience this?
 
lol, its not a bug. that is how its supposed to work by design. same with all other 8800 cards.
 
Ok, the new beauty arrived ;).





3Dmark 06: 11932

Didn't try any higher.
 
wow... some great numbers coming in from these cards.. looks like Nvidia hit a homerun here.. a few less stream processors, but much nicer core and shader clock speeds, well, and that OCing headroom rocks.. whew. The old school GTX/GTS will be a tough sale with these cards around. :)
 
Slowly turning up the speed here on my XFX 8800GT ... currently at

Core:650
Shader:1625
Memory:950

with No problems at all. Max temp I have seen at auto fan is 63... so I am happy enough for now. I will prob force around 50-60% and see how temps are after that , but so far so good.

Now ... to go register my card just incase :)
 
Cele-CT said:
Slowly turning up the speed here on my XFX 8800GT ... currently at

Core:650
Shader:1625
Memory:950

with No problems at all. Max temp I have seen at auto fan is 63... so I am happy enough for now. I will prob force around 50-60% and see how temps are after that , but so far so good.

Now ... to go register my card just incase :)
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I've hit 90C on my XFX. You must have good airflow.
 
I hit 61C max, have pretty good airflow...the fan is on 100% (there is a slight whine at that speed, however hardly noticeable over my case fans).

I also bought that antec vcool, which is just a slot fan that brings in air right under the 8800's fan. Did drop me like 1-2C, however it cooled my NB and my CPU by 3-4C. I guess bring in more cold air where my system was hottest helped me overall.
 
I am now stable at 730/1800/1950. I can go much higher on the RAM, but I don't out of fear.

Temps are good, but that's coz my house is cold.
 
Zinn said:
I think someone forgot to take his Valium.

I was thinking of going from 8800 GTS to 8800 GT (already sold my GTS on eBay and temporarily running 7300LE *Lame Edition*)

But after seeing the results in this thread and the resultant 3dmark scores, it seems like going from a highly OC'ed GTS to a highly OC'ed GT would be pretty much a sidestep.

Guess I'll wait for the next big thing :(
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If all you do is play with 3Dmark yes.
If you game, 3dmark scores are useless....
 
My GTS was scoring 10,000 overclocked. My GT @ stock is 2300 faster, overclocking it I'm sure I can take that up to a 4000 difference. I agree that artificial benchmarking is pretty lame but gaming is much smoother also now I've got it set correctly. Using 169.02 drivers as betas are a bit flaky
 
wrangler said:
Evga SSC 770/1786/2000 3DMark06 14400. Rig in sig except 3dmark was run in XP.

AtiTool gives me a few blips at 780 (nothing visible but it dings and restarts the clock every so often so I set it back a little). Stock cooler with fan @ 70%, load max temp is 64.

No love on the shaders though. Reason I put 1786 is because thats what Rivatuners hardware monitoring detects. I can put it to 1800 (still detects 1786) but anything over that and Rivatuner detects it at 1836 and I start getting errors so shaders obviously still jump in certain steps even though I've selected to clock them independently.
Click to expand...

Interestingly, GPU-Z detects whatever I set the shaderclock to in Rivatuner. So I set shader clock to 1800 and GPU-Z detects 1800. Rivatuner still detects 1786.
 
I don't even have my card overclocked but my e6600 @ 3.4 makes my card score 13,400 in 3dmark06 :p
995d1193906806-review-xfx-8800-gt-512mb-alpha-dog-3dmark06-3.3ghz.jpg
 
wrangler said:
Interestingly, GPU-Z detects whatever I set the shaderclock to in Rivatuner. So I set shader clock to 1800 and GPU-Z detects 1800. Rivatuner still detects 1786.
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rivatuner is the only program that is actually reading what the clks are set too, and not what the user is trying to set it too. there is a 27MHz crystal on the PCB that used to derive the clks - it uses a multiple of 27MHz. the shader clock increments by 54Mhz (or 2x the PLL).

if your setting 1786, it's gonna really be set at 1782, and that is what rivatuner will read (33 x 54MHz = 1782MHz)
 
Diverge said:
rivatuner is the only program that is actually reading what the clks are set too, and not what the user is trying to set it too. there is a 27MHz crystal on the PCB that used to derive the clks - it uses a multiple of 27MHz. the shader clock increments by 54Mhz (or 2x the PLL).

if your setting 1786, it's gonna really be set at 1782, and that is what rivatuner will read (33 x 54MHz = 1782MHz)
Click to expand...

What he said.

I might have to bump my clocks up to 3.35 again.
 
played around alittle with my BFG GT OC....

695/1740/975 so far.

10k in 3dmark06 with my setup, i need a new mobo and cpu.
 
Man, i thought my overclock was topped out a while back at 700/1728/975

turns out my harddrive was bad, causing lock ups.

Turns out i can run this bad ass mofo up to 740/19xx/1020
 
Is 2000 memory speed safe? I remember a guy in another thread explained that the card would get physically damaged from running 2000+ memory speed for sustained periods of time.
 
I think its safe because the evga SSC version has the memory clocked at "2000 mhz."
 
Image1.jpg


Ordered a standard EVGA 8800GT from Frys ($229) and lookie at the default clocks. :)

100% stable at the EVGA SSC speeds.
 
8557muv.jpg


I am a noob when it comes to overclocking... but I think I got this going alright.

Also, according to Riva, my GPU temp is at 54C degrees... is this acceptable?

Running only on stock cooler/fan.
 
54C is fine, but you should find out the load temperatures. Run the rivatuner hardware monitoring and play some crysis. I don't think temperatures will be the issue, but Crysis will tell you if your oc is stable.
 
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