Sudden Northwood Death Syndrome?
 

I want to push my day old processor higher but scared that SNDS might occur.

What is my safe max voltage? I use my system about 3-4 hours a day.

Right now here is my setup:

LGA775 P4506 (2.66ghz@4.2ghz) 1.6v (dual prime stable).

Max load temp is 48C/118F.
Ambient Room temp is 31C/88F.

cooling is a Triple Rad H20-120 water cooling setup.

CPU Right mark says Internal Vcore Requirement is at 1.388v.

thanks! thanks! thanks!

LGA775 is not Northwood, it's Prescott.
1.6V is pretty high for Prescott. 4.2Ghz is mighty good. Pushing further, your dad's computer will be yours, dead :)

What lazyman said. That's no Northwood, it's a Prescott. And Prescotts actually have a lower vcore than a Northwood, even if they tend to output twice the heat for it. I wouldn't go above 1.6v... I wish my Northwood would do 4ghz at 1.6v... ;)