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[GTX 590] Flashing & Overclocking Thread - Page 39

post #381 of 721
Well, I may have to take back my words; even though GPUs show 100% stress
at 800mhz I get a slightly lower score than at 750 mhz with benching both heaven and 3dmark vantage.

Seems that IS doing something, now finding a way to bypass it.



See attachment: 800 mhz @ 1.063V, I will push the shader also a bit higher
and see what happens.
post #382 of 721
Quote:
Originally Posted by _Faust View Post
Well, I may have to take back my words; even though GPUs show 100% stress
at 800mhz I get a slightly lower score than at 750 mhz with benching both heaven and 3dmark vantage.

Seems that IS doing something, now finding a way to bypass it.



See attachment: 800 mhz @ 1.063V, I will push the shader also a bit higher
and see what happens.
Be careful with your voltage dude - you're right on the edge @ 1.063v.
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[i7 2600k - 5.XGHz @ X.XXv] [ASUS P8P67 Pro B3] [2x MSI 7970s in Crossfire @ 1125/1650] [8GB G.Skill Ripjaws X 2x4GB] 
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[G.Skill Turbulence II RAM Cooler] [Windows 7 Ultimate 64bit] [2x BenQ XL2410T @ 120Hz] [Razer Lycosa] 
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post #383 of 721
Yes I know, I wont go higher. I can go to 825 mhz stable with 1.063V, but the benchmarks end a little lower. I will look into tweaking the bios more. Anyone got more info on that?
post #384 of 721
I noticed the backplate get pretty hot (45-55C), I definately would not advice high voltages without cooling on the back of your card, I think the backplate (like from EK waterblocks) suffices
post #385 of 721
yeah, backplates are hot at 1.05v

your score in heaven..its pretty low. cant 970 lower score by almost 200 points
i had 1441 at 800@1.05v with one card
try 785 and 790 - they're some sort of sweetspots for heaven as we noticed on russian boards
post #386 of 721
Thanks for the tip, will post results later today!
post #387 of 721
exactly 51 fps at 790 mhz in heaven bench, is that a normal score?

I think I read somewhere that 2x 580 stock gave 54 fps (these are clocked
at 770 mhz), so Its not too bad imo.

Is there anything to be done to bypass the throttling?
post #388 of 721
you can check some common results here in heaven section.
actually throttle part (PDL - power draw limitation) is in drivers, so the only way - mod drivers
post #389 of 721
Yeah but on the first page I here I read the throttling goes to clock speeds that are set in the bios, so my question is has anyone here messed with the clock speeds in the bios?

I'm willing to give it a try
post #390 of 721
suppose I will set my level 1 voltage (the level it will jump to when throttling) to about 1.05 volt, next in the bios editor change the P14 row (clock domain for throttling) to my overclock speeds (800 mhz), then even when it throttles it will jump to these nice overclock speeds, would this work?

I could use power profile 2 then for idle (dont use cuda anyways), so I can set that a bit lower so it doesnt take max power at desktop.
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