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69xx What's your max overclock? - Page 19

post #181 of 209
Quote:
Originally Posted by AMD/ATI View Post
Yea, now i can modify my voltage, thanks M0E ! You got +1 rep from me .

Got it on 930/1375, on these clocks I took artifacts :\\.

So decreased it to 910/1375, full stable, got it also stable on 920/1375. @1,5 V.
1.5 VOLTS? too much. ssssss gonna fry lol. Just to let everyone know again that the oc is dependent on temps. Under 60 degrees helps stablilty, either use water or aftermarket coolers. I got 960/1540 STOCK VOLTS completely stable in everything with directcu II 48 idle (eyefinity) and 60 load in furmark (less in games)
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post #182 of 209
Yea, but 1,5 V is my stock voltage .
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post #183 of 209
1.08v@890mhz(1375memory@1.5v, modded 6950). 1.075v and I get artifacts once in a while. 1.07v and the display driver will stop responding and kick me to desktop after ~30min of 3Dmark. 1.065v and it almost anything makes it lock the computer.

Seems to run 1.1v@915mhz just fine. Haven't pushed much further as none of my games can really break a 70% load average.

Highest I've pushed it without crashing was 940mhz @ 1.12v and 1400mhz for memory. Around 1450 for memory, I start to get corruption after a few minutes and at 1500mhz I get weird visual right away. At 950mhz, even 1.2v couldn't keep it stable.

I figure the wear-and-tear isn't worth it, so I stick with 890mhz@1.08v. Keeps it cooler.
post #184 of 209
I have 2x 6950 at 920/1400 @ 1.16v. Only played DA2/Civ 5 for a couple hours each and GPUtool for 20 minutes so it hasn't been tested that heavily but no problems so far.
Edited by GreenCard - 3/19/11 at 7:32pm
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post #185 of 209
Quote:
Originally Posted by onthemour View Post
1.5 VOLTS? too much. ssssss gonna fry lol. Just to let everyone know again that the oc is dependent on temps. Under 60 degrees helps stablilty, either use water or aftermarket coolers. I got 960/1540 STOCK VOLTS completely stable in everything with directcu II 48 idle (eyefinity) and 60 load in furmark (less in games)
With 1,5 V I meant 1,15, sorry. Otherwise I got a fried HD6950 .
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post #186 of 209
Why is it that HWMonitor reports back a constant max of 1.17v when I've done the voltage unlock and everything? Is HWMonitor just getting the wrong reading?
    
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post #187 of 209
Quote:
Originally Posted by PaulWog View Post
Why is it that HWMonitor reports back a constant max of 1.17v when I've done the voltage unlock and everything? Is HWMonitor just getting the wrong reading?
yup its wrong. Disregard volt readings in HWMonitor and GPUZ
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post #188 of 209
That link for the voltage unlock, just follow the instructions in the zip file? "Will do" I think its necessary, cause even at 1.3v 950/1450 isnt stable. My numbers came down in 3dmark from when i had it at 945/1445. do you guys think the 1.35 maxv the software allows will stablize my 950/1450 or will it allow considerable headroom with the powerboost crap at 20% lol
Edited by Wbroach23 - 3/24/11 at 8:38am
    
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post #189 of 209
My card hated AB after i unlocked it with the card only being able to do 1.3v, so hopefully unlocking the voltage will fix my problem.
    
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post #190 of 209
6950 unlocked shaders

Maximum stable overclock by voltage:
1.2v - 965/1375
1.25v - 980/1375
1.3v - 990/1375

Those voltage increases are insane. I'm currently running 940/1375 @ 1.2v to leave a bit of headroom.
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