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Thermal Sensor Placement

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BulldogMcC

Member
Joined
Jan 7, 2003
Location
New York
I just installed an XP90, on an ABIT IT7 Max2v2 board and a Vantec Nexus Fan controler/thermal sensor. I am getting 18 degrees lower temps on the Nexus' thermal sensor mounted on the bottom of the XP90, right up next to the IHS, than I the MB reports. I have a second sensor I would like to put in the gap of the IHS, but the probe tip won't fit through the gap on the 478 seal:

p4_as_dab2a.jpg

I can get the plastic tab into the gap, but not the metal probe tip. I am thinking about using Arctic Silver Thermal Adhesive to glue the probe with the plastic tab in the gap, so the probe is actually tip to edge with the IHS. Will this provide a better temp on the CPU, or is the edge of the IHS gonna give me the same result as on the XP90. I ask first because one I glue the sensor to the 478 P4 2.4B, it is permanent. Thanks.
 
don't epoxy the probe down, tape it down (thermaltape is supposed to work).... isn't the plastic tab bigger than the probe tip??... cut off the plastic, its not necassary... don't kill the probe though =P
 
What you are attempting to do is worthless and a waste of time. Would you take the temp of the inside of your refrigirator or your oven with that same thermal probe taped to the outside DOOR of the fridge or oven? No. Even if you got the thermal probe ON THE DIE, it wont give you an accurate reading of internal core temps. The Abit board you have reads the internal core temp so it will be more accurate that any external probe.
 
You took the cap off the CPU :eek: I hope you did not kill it, when you put it back on make sure it fits tight because iff the cap is not touching the core it can fry.
 
I am just perplexed at the 18C delta in MB readings and the probe on the XP90 and trying to figure the best way to get a truer temp. The probe has the thermal metal joint inside the plastic sleeve, and I can get more if I need them, but the metal is too large to fit in the gap and I would be worried then about shorting out the CPU if I were to stick a metal object under the IHS and could not see its exact placement. Maybe I will try it with thermal tape.

The MB temp reports are not scaring me, they are about 53C under full load, a P2.4B at 2.88 (FSB160) running Prime 95 now for 24 hours straight. It is just the Nexus probe is only reading 35C.

Thanks.
 
I did not take the cap off, that picture is from Arctic, from their AS5 instruction page. It is a good example of where the gap is.
 
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