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What is the best method for find a max overclock for a gpu? - Page 2

post #11 of 14
I like using unigine heaven or 3d mark with furmark. I crank up the clocks until I can't get through one run of heaven or 3dmark11 comparing fps to make sure there isn't a drop. Then once I get it around where I think it's stable I run furmark for 20-30 minutes.
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post #12 of 14
Thread Starter 
Quote:
Originally Posted by Behemoth777;13084760 
Overclocking gpu's is more complicated that oc'ing a cpu, there is more than one program you need to use to test stability. First, for core overclocks, the best stability tester is furmark and/or folding. For memory overclocks, I usually run either the metro 2033 benchmark or heaven benchmark at maxed out details, so you stress the memory as much as possible.

Kombustor is pretty much the same thing as furmark right?

my gpu usage issue is resolved, there were like 6 copies of kombustor running in the background that didnt close properly that were maxing my cpu usage lol

oh, i was just thinking i wonder how that amd power control crap is interfering, right now im at 0% i should probably push it to +20% i take it?
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post #13 of 14
Thread Starter 
Ok so i ran furmark in fullscreen (since crossfire doesnt work in windowed) and both cards ran at 1000/1425 @ 1.225v, ran 1 card for about 30 min at these settings and both together for about 10min.

Had to move the power control feature up to +20% in the CCC because the first time i ran it i noticed looking at afterburners core speed monitoring that my core speed was being throttled, ran it again at +20% and it stayed pegged at 1000mhz core.

My power consumption is crazy, i measure a near 800w draw at the wall, yikes!
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post #14 of 14
Thread Starter 
Ran 3dmark11 and got 10.6k at 1000/1425, trying for 1010core now

Got 1010/1435 stable enough to at least run 3dmark11 only gained like 50 points

trying 1020/1435 now


So to make a table of the results

1.195v 975mhz (highest i could hit on stock volts)
1.225v 1000mhz
1.245v 1010mhz
1.265v 1020mhz
Edited by Blindsay - 4/11/11 at 12:52pm
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