QPI/DRAM core voltage too high?


Dec 26, 2008
Hey guys,

I'm running the following setup:

ASUS P6T deluxe V2
i7 920
coolermaster v8
cm 690
wd caviar black 640gb
ocz platinum 6gb 1600

I have it overclocked to 3.5ghz stable idleing in the 39-42c range with the following tweaks:

Base clock set to 175
cpu voltage set to 1.2v (stock I think)
qpi/dram core voltage set to 1.29375
DRAM bus voltage set to 1.60

I read somewhere that you should always keep your qpi/dram voltage within .03 of your cpu voltage? Or did I read this incorrect...if that's the case then it seems that I have to back my qpi/dram voltage way down or turn my cpu voltage up. Again, this is very stable, running prime95 for multiple hours at acceptable temps...help ???
I don't think you need to. I would keep QPI/DRAM below 1.35-1.4V, but it should be fine where it is.

Mine is actually running the opposite way - I have 1.35V CPU, and 1.28V or so QPI/DRAM.


Oct 18, 2006
The difference is .5v not .3. On my board if I set mem more than .5v above vtt it will automatically raise the vtt to keep it at .5v or less difference. Evidently what my board calls vtt yours is labeled qpi/dram.