Originally Posted by CrispySilicon
Yeah, I got yer passive
heatsink right here...
I'm not worried about keeping it cool. I'm worried about the long-term effects of that much voltage. I want my Frankenrig to last a good two years of 24/7.
According to the Intel datasheet (http://www.intel.com/Assets/PDF/datasheet/317610.pdf
), even stock MCH voltage (which is actually +0.200 on my board) is above the spec'd maximum. I've got to push +.0375 to get it stable at PL6 from cold boot. Max spec is 1.375 and it starts at 1.25. So with "stock" settings, my MCH is already at 1.45V.
I just don't think the ~3ns is really worth the required bump (1.625V)
Oi my man, what happened to that beautiful copper heatsink? Sold off for a couple of bucks was it?
Anyway, I advice you to uh monitor closely your NB voltage:
As you can see above, my NB auto undervolts itself to 1.3V or less (actually 1.27V in the above screenie) when there is no load to the CPU. In view of the above, the long term effects of extra voltage on the NB should be negligible. Indeed I have been running this board here (P5Q Deluxe) at 1.4V NB (BIOS Setting) for almost 2 years with no adverse effects. Of course, the 1.4V BIOS setting was so only under load as the board auto undervolted it's NB to 1.3V or less when there was no load.
For the record, my BIOS NB setting is 1.52V and the board auto undervolts to 1.3V or less.
So, if your board is also auto-undervolting too then it could tolerate high NB BIOS setting better than otherwise. Of course, your present course of action to be conservative on the NB voltage seems quite prudent, seeing as though your board no longer has any heatsink to speak of.