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OC' my 2 GTX 480's under water. - Page 2

post #11 of 22
Post up your temps as well please! I'm looking at going SLI and yours would be a great reference, also looking forward to benches.
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post #12 of 22
Thread Starter 
Quote:
Originally Posted by Tom1121 View Post
Post up your temps as well please! I'm looking at going SLI and yours would be a great reference, also looking forward to benches.
yeah will do. also im still a bit iffy about my temps. im not sure if 13c above ambient is good, if my temps dont even out soon i might do some indigo extreme. cause i fell i should be closer to ambient on stock clocks. but like i said i will wait and see how my temps go after i overclock my cpu and both these 480's
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post #13 of 22
Quote:
Originally Posted by ThaJoker View Post
yeah will do. also im still a bit iffy about my temps. im not sure if 13c above ambient is good, if my temps dont even out soon i might do some indigo extreme. cause i fell i should be closer to ambient on stock clocks. but like i said i will wait and see how my temps go after i overclock my cpu and both these 480's
13C above ambient sounds good, what did you use to stress the cards? I load at around 56C on my 480 at 1163 Vcore I believe and 900 Core, that is in Furmark with one GTX 480 Radiator with a core i7 920 4.4GHZ on the same loop.
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post #14 of 22
Thread Starter 
ok so when i go to 900/1800/2050@1100mV i get a blank screen at about 22% in furmark. but at 850/1700/1900 @1050mV its fine and there is only a 4 fps difference any ways so ill probs stick with these clocks.
Edited by ThaJoker - 3/28/11 at 12:42am
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post #15 of 22
why is everyone trying to make this super complicated?

1) crank the voltage to max allowed by software
2) start at 1Ghz core and do some quick benchmark stress testing looking for artifacts and monitoring temps
3) if it artifacts or locks up, bring it down some interval and try again. if it doesn't crash, jack it up and try again. repeat until you find the max core clock that's stable over like 10 minutes of stress from benchmarks
4) repeat step 3 for the memory
5) scale back your clocks by 5% for stability
6) enjoy
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post #16 of 22
Quote:
Originally Posted by ThaJoker View Post
ok so when i go to 900/1800/2050@1100mV i get a blank screen at about 22% in furmark. but at 850/1700/1900 @1050mV its fine and there is only a 4 fps difference any ways so ill probs stick with these clocks.
or this. looks like you've got your OC
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post #17 of 22
Thread Starter 
Quote:
Originally Posted by littledonny View Post
or this. looks like you've got your OC
Yeah ive managed to get 900/1800/2000@1100mV

Yay.
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post #18 of 22
don't run furmark unless you need rock solid stability for hours when you game. it's not worth the stress and risk of frying a component
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post #19 of 22
480's aren tknown to fry up in furmark as far as i know...you're scaring him now haha.

the 570's are known to, not the 480s- correct me if i am wrong.

also, gpu core speed > mem speed. keep mem speed at default then go full speed to find max core clock then do the mem clocking.
    
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post #20 of 22
as others have said...

max out your Core/shader clock...

then OC your VRAM... as i did

i ended up with 1.2V 880/1760/2300 (i think i got lucky with the RAM) for Benching...


and 1.1V 800/1600/2100 for a 24/7 OC
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