Hello my friend Morcego,Originally posted by Morcego_Pt
Pedro, did you actually made any changes to the previous Prometeia setup you had?
Cause now you're running this CPU at -24º, and you remember the previous 2.4b was always at -10 or worse...
Is it only the CPU, being the C1 stepping the great miracle for the masses?
Nope, no mod on the Prometeia, just a lot of seal-string and very carefully fitting up the head of microfreezer.
Maybe is the C1 stepping, but I suspect is more a problem of inaccuracy of the motherboard readings.
Maybe, tthe Max-2 thermal sensor is less accurate than the IT7 - or more accurate, who knows!
Last August, Martin Goldmann (from the Support Department of Chip-Con ApS) send me this mail abou the accuracy of the motherboard readings, I suspect will usefull for all Prometeia users
Surely, Martin and the rest of the fantastic support Chip-con support team (the best I ever see in the computer business) don't mind if I share his mail with all Prometeia users in this forum.
"..
We do not put much weight on the temperatures reported by the Motherboards BIOS or by temperature measuring software such as Motherboard Monitor. In our experience, these temperatures are highly unreliable, and may differ by more than 15-20ºC from actual temperatures - especially at the extremes of their measuring range. If you want more accurate CPU temperature readings, you should place a high-quality probe on the rear of the CPU core, and connect that to a high-quality thermometer such as a Fluke 54 II or similar.
For what it's worth, the great difference in temperature you measure between idle and full load, does seem to indicate that there is a somewhat higher than normal thermal resistance between Evaporator and CPU core. This can be caused by bad thermal contact between Evaporator and P4 Heatspreader and/or between P4 Heatspreader and P4 Core. Reassembly can give you an idea of how high thermal resistance between Evaporator and Heatspreader may be, but won't tell you much about the thermal resistance between Heatspreader and CPU Core.
We have experienced as much as a 0.2ºC/Watt thermal resistance between Heatspreader and CPU-Core. This will give a temperature loss of 25ºC between CPU Core and Heatspreader when burning 125Watts of heat. Additionally, if you have a thermal resistance between Evaporator and Heatspreader of 0.1ºC/W, the total temperature difference between CPU Core and Evaporator will be as high as: 125W * 0,2ºC/W + 125W * 0,1ºC/W = 37.5ºC. If the evaporator is at -30ºC, the CPU will get as high as +7,5ºC - quite a difference!
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Welcome to the forums. Nice to see more people from Portugal here. 
By the way, nice overclock.
Hi Pedro
Hi Pedro
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