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Click to See Complete Forum and Search --> : question on Temp probe placement against CPU???


benknobi
02-02-2003, 11:36 AM
I have an LCD Temp gauge w/ flat probe I can place against the side of my CPU to read temps. My question is... Is there a "Best" side to place the probe against to get the highest(Most accurate?) core reading?

I have an XP2100 "B" Tbred. and the probe is placed against the right hand side when looking at it with the ident tag at the bottom. The problem is the readings I get seem to be off a good 4-5c from what I computed the temps should be from Watts * c/w =X c + Ambient c = Core Temp. My sensors are accurate to within about .3c, so I can't account for the variance other than that the probe is placed against one of the cooler(?) sides of the CPU.

Trial and error would result in unmounting and mounting the HS 4 more times, which I would like to avoid that if possible.

Anyone seen a Thermograph of a hot Tbred? Which side is closest to the hottest spot in the core?

system:
Epox 8K5a2+, 2100+ Tbred B@2386Mhz, Vcore 1.825v, Thermalright AX-7 w/YSTech 49 CFM fan, ASIII compound.

ukulele
02-02-2003, 12:44 PM
It's an imperfect world. What you want is a average temperature on the cpu. The probe can't do that. It can however show you the change up or down of an established baseline according the actual reported readings of the probe. Just ignore the difference in reported and computed data.

benknobi
02-02-2003, 04:21 PM
yes, it's an imperfect world... but my temp probe is accurate to .3c or so, and My question is valid and still unanswered...

My Motherboard uses a Socket thermister that is off 10-12 c low. I want a more accurate reading.

I don't want to ignore the difference. I want the most accurate reading possible of actual core temp. I know I may have to adjust slightly with a fudge factor. But the readings should be closer than they are. ergo my question...

Is there a best side to place the probe against?

ukulele
02-02-2003, 07:19 PM
Even if you knew what side was the hottest side it still wouldn't give you any more accurate of a reading unless you averaged the readings of all the sides anyway. Heat in the cpu ebbs and flows according to what part of the cpu is under the most load at exact time of the reading.