View Single Post
Unread 09-26-2002, 05:25 PM   #34
pHaestus
Big Player
Making Big Money
 
pHaestus's Avatar
 
Join Date: Aug 2001
Location: irc.lostgeek.com #procooling.com
Posts: 4,782
Default

Quote:
Originally posted by Cathar

Could it be that the temperatures reported are "compressed"? Or could it be that the correct temperature is the result of adding 10C to whatever's reported? That'd make more sense assuming the gradient of the thermal probe is accurate. Or could it be a bit of both?

The A7V333 also reports the in-socket diode temperature and it typically sits at 10C higher than the CPU diode. Of course none of this stuff is calibrated properly, but it is good enough to pick up differences.
Compression would occur from resistance in the traces. Not uncommon if mobo mfgr crosses pcb layers or runs them too long. 0.4-0.8C per ohm for maxim ics; prolly similar for Asus. Shifting C/W numbers (not constant with watts) is symptomatic of trace lengths being longer than recommended by ic mfgr:

http://phaestus.procooling.com/wirelength.jpg

Would it surprise anyone if there were issues with an Asus onboard temp monitoring device?
pHaestus is offline   Reply With Quote