why do my cpu temps fluxuate so much?

[moosedick]

:mad:
I have a PIII 700@1000 (1.95v for stability). Its on an asus cusl2-c. I have an intake fan and exhaust. Ocz gladiator heatsink with AS2. My idle temps can be around 32-34C. Load can get up to 48-51C. My mobo temp never reaches 30C (mostly 27-28C). Any suggestions.

[The Doors]

Hi moosedick,
Generally the sensors on the Asus Mobo's aren't very accurate, infact sometimes reports temps of 10 degrees up, first of all I suggest you to use MotherBoardMonitor that you can found at http://mbm.livewiredev.com/ and also use an external thermal sensor in between the Cpu & the HeatSink.

I hope it helps you ;)

[The Doors]

Or better, first of all, try to reseat the HeatSink, always with a very thin layer of thermal paste ;)

[moosedick]

i have a copper shim on there. could that be a problem? how do you suggest i mount the heatsink?

[The Doors]

Yessss!!!
Can be the Copper shim that increase the temps on your chip, infact this is the prob of this stuff with the Intel's chips, try to reseat normally the HeatSink only with a very thin layer of AS II ;)

I hope it helps you.

[batboy]

I've read past articles that say the shims used with coppermine FC-PGA processors actually can hurt cooling. On the other hand, the shims seem to help a little when used with AMD CPUs. I have a copper shim somewhere in my junk drawer. When I installed it on my P-III 700, my CPU temps averaged 1-2 degrees warmer than without the shim. I even tried coating both sides of it with Arctic Silver. No help at all.