Thumbs up rge for going way beyond the call of duty.
I'm in total agreement that TjMax=100C is very reasonable for the 45nm E8x00 cpus and the core temp being about 5C higher than IR IHS surface temp measurements is also very reasonable.
I plan for RealTemp to continue using that number for most 45nm CPUs. For the original E6x00 - B2, I will be using 10C less than that or TjMax=90C regardless of Intel's recent IDF announcement. Using Intel's new Target TJ spec as TjMax just doesn't make any sense for most 65nm processors.
I would still like to get a Xeon E3110 for some testing just to see how it compares to an E8400. If I ever find one that is guaranteed to be E0 then I'll jump on it but the ads I've seen don't mention an sSpec number.
I'm suspicious that my assumption that a well air cooled Core 2 Duo should run about 5C hotter than ambient at low MHz and low voltage might be too conservative. Maybe our calibration method at low volts / low MHz should be based on 10C.
With my Tuniq in the way, it's hard to get in for an accurate IR measurement and as you know, as soon as you remove the heatsink, temperatures shoot up in the blink of an eye.
Can you think of any way to get an IHS temp measurement or maybe a heatsink temp measurement near the IHS? If the heatsink is installed you might come up with a number which proves or disproves that 5C over ambient is reasonable.




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