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P67A-UD3 + 2600k Overclocking Issues - Page 2

post #11 of 35
Quote:
Originally Posted by xStealth;12164395 
DRAM is at 1.65v
QPI/VTT default of 1.050v

Hm.. I'm not sure if this has changed from 1156/1366, but this would be a very bad thing if the same holds true for Sandy.

You always want to make sure your QPI voltage is within .5v of your DRAM voltage. In this case, it is not. Some very terrible things can happen when they are too far apart. Very terrible! eek.gif
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post #12 of 35
Thread Starter 
Thanks for the read Ukighted. Yeah, I've noticed that the vcore drops around .07v when load is applied
post #13 of 35
CPU temp under load?
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post #14 of 35
Quote:
Originally Posted by xStealth;12164541 
Thanks for the read Ukighted. Yeah, I've noticed that the vcore drops around .07v when load is applied

It took me a while to figure out as well, as I could not get stable clocks at voltages much higher than others with perfect stability. I thought when I put 4.8ghz at 1.4v that would be the end of my overclocking, but the prime95 caused a bsod in about 5 seconds. I'm not too confident with adding more voltage, so it's down to hoping that a fix will prevent such a large vdroop.
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post #15 of 35
Quote:
Originally Posted by Diabolical999;12164587 
CPU temp under load?

My temps (2500k @ 4.5ghz/1.4v) with a 212+ were under 65c on load, so I would guess it would be similar for him.
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post #16 of 35
Thread Starter 
Well the longest I've been able to run full load at 4.5GHz was about 20 minutes, cores ranged from 54 to 61, core 0 being the coldest.

Going to go try 1.2v QPI now
post #17 of 35
Thread Starter 
Well from the looks of it, it seems that the vdroop really might be the source of the issues, then. I would rather not RMA the board, but its getting all sorts of annoying.
post #18 of 35
Quote:
Originally Posted by xStealth;12164713 
Well from the looks of it, it seems that the vdroop really might be the source of the issues, then. I would rather not RMA the board, but its getting all sorts of annoying.

Vcore? I'd set it at 1.4v and test for stability, as I was able to stabilize at 1.4/4.5ghz. It's a temporary fix, I guess...
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post #19 of 35
Quote:
Originally Posted by xStealth;12164713 
Well from the looks of it, it seems that the vdroop really might be the source of the issues, then. I would rather not RMA the board, but its getting all sorts of annoying.

Honestly, I would see what happens after you up your QPI voltage. Especially with that much memory and especially with your DRAM set to 1.65v. 1.0v QPI isn't going to cut it.
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post #20 of 35
Quote:
Originally Posted by Plex;12164742 
Honestly, I would see what happens after you up your QPI voltage. Especially with that much memory and especially with your DRAM set to 1.65v. 1.0v QPI isn't going to cut it.

I believe it is different for SB. Those are the defaults I run at, and I'm nearly certain that the problem is due to vcore, rather than qpi.
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