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[Official] MSI GTX 680 Lightning Owners Club - Page 261

post #2601 of 7827
Quote:
Originally Posted by IronAge View Post

1372 with +93mV and Power Limit 133 on non-LN2 Bios any good ?

How to unlock Aux and Memory Voltage in AB ?

1350 seems to work with 1.212-1,216.

You think power limit kicks in since it locks up @1382 under Heaven Benchmark ?!

Thanks for any comments. thumb.gif

Those are great clocks thumb.gif I can't wait to see what it hits on the LN2 BIOS with +93mv. Do tell after trying redface.gif

No lock-ups happen because of the power limit, only throttling occurs (you'll see the core down-clock itself during the run). It has to be a crash caused from instability, which, judging from 1382mhz on the non-LN2 BIOS, it would seem pretty likely.

Heaven almost always crashes before 3dMark11, so if you do Heaven at 1372mhz then you could probably do close to 1390mhz in 3dMark11, and that's superbly high for the non-LN2 BIOS, so that's probably why you're crashing. Looking forward to your results on the LN2 BIOS wink.gif

Also, I had the voltage up to +143mv when running 1460mhz and I was still only hitting ~110% Power %, so either way you don't have to worry about hitting the ceiling with that, but raising the Power % slider does seem to help stability for some one way or another.
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post #2602 of 7827
Has anyone degraded their GPU or memory yet? If so, at what voltage?
Edited by Scorpion667 - 9/9/12 at 8:42pm
    
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post #2603 of 7827
I can get almost 100Mhz better core clocks now than when I first got the cards, but I run them way off max for daily driving. I was never able to hit 7000 on the memory, even new, but have benched 3DM11 at over 1400 core in SLI the last couple of weeks with just AB 2.2.3 voltages.

The only thing I notice is the VRMs on card one are running quite a bit hotter than on the other, anybody know where to get that heat transfer tape or whatever that stuff is?
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post #2604 of 7827
I have found that memory for me runs best @+90. If I go above +90 I have crashes. Limit used to be +550 with +110 on memory voltage. But so far I have run +580 @+90.
post #2605 of 7827
I've been concerned about degrading such an awesome piece of silicon, I literally will do 3-4 3d mark 11 runs on LN2 with +113mV then shutdown and go back to normal bios.

Been running it in games @ 1.3ghz core and +400 mem at stock normal bios voltages. I really don't like the idea of putting 1.3v though it for extended periods for such little fps gains even if the temps never exceed 50 degrees.
post #2606 of 7827
You may have a point here, I ll try to tweak the std BIOS settings for me as well..
post #2607 of 7827
Out of curiosity how much do these toys in SLI warm up case interior while overclocked vs stock clock? IMHO I like the cards but I'm more concerned about heat dissipation inside the case. rolleyes.gif
Thanks
post #2608 of 7827
Quote:
Originally Posted by Gorki View Post

Out of curiosity how much do these toys in SLI warm up case interior while overclocked vs stock clock? IMHO I like the cards but I'm more concerned about heat dissipation inside the case. rolleyes.gif
Thanks

Made a difference for me. Before I got my H100, I had 2 of these in with my 2500k / Hyper-N 520 and they raised CPU temps about 5C. After completeing this current build though and getting the H100 pulling air in from outside the case, my temps are just as good as those with reference cards (exhausting air out the case). But stock vs. oc'd doesn't really make a difference for me, since even SLI at 1300/6800 stays in the 50C's biggrin.gif
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post #2609 of 7827
Thanks @dph314 & @B rad - your replies and input are appreciated very much. thumb.gif
post #2610 of 7827
Well, I'm stumped. Last night I tested memory OC in relation to benchmark scores (3dmark11):
Core was at 1313 throughout the tests.
+552 Offset Mem: 11899 GPU Score
+496 Offset Mem: 11899 GPU Score
+552 Offset Mem + 20 Offset Vmem: 11900 GPU Score.

No artifacts at any of those settings.

What do you guys make of this? If scores were lower yeah we can assume the ECC is kicking in, but seeing how Mem bottlenecked these are, it should yield a small performance boost.
Edited by Scorpion667 - 9/10/12 at 8:44am
    
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