Very Important! Temp & Mobo

[Rav]

OK Heres the deal, I have an Athlon XP1800+ on a MSI K7T266 Pro, cooled by a 156W Peltier and H2O. The BIOS says CPU temp 27C at 1.85V and system temp 38C. This doesn't seem right to me! I know my ambient is way below 38C, and the case is wide open. The CPU temp also seems high since my old Athlon got to negative temps with the same setup. Now heres the important questions:

1. Does this board read the internal diode of the Athlon XP?

2. I didn't see a sensor in the socket. The center of the socket is also filled with foam because of condensation concerns. Could a sensor at the bottom of the socket be reporting a bad temp?

3. Is this board known for bad temp readings altogether?

Thanks, please respond soon if you can, I'd like to know so I can stop worrying!

-Rav

[Ottoman]

those don't sound right to me at all...


double check to make sure everything is seated properly..

and if I were I'd invest in a Digi Doc or Compu nurse to get accurate measurements... Mobo's are notorious for bad readings...

+/- 10 or more sometimes...


Xp's run cooler than T-birds...

[Yodums]

The in socket probes of the lastest motherboards were always bad.

You can do the following:

Get the probes at radio shack w/ an LCD display for like under 5 bucks.

Get those LCD dispaly things you put on objects and stick it in the center of your AGP, CPU, Hard drives and thats your case then take your ambient temperature with it.

Should give you the correct readings then

[Bender]

Like these guys said you shouold probably get an external temp sensor. Your motherborad won't read the temp sensor in the athlon xp. I bet your socket has a temp sensor in it. Some temp sensors look just like resistors and not like a little probe end. Since you have foam in your socket your temp will be way off.

[Rav]

Thanks for for replies. Unfortunately, I am using a shim around my CPU to help fill that area in against condensation, plus theres a lot of insulating foam around the block, so an external temp sensor would be hard to impliment. If anyone has a guide to putting a temp sensor next to the die I'd like to see how thats done though.

I still don't know why it thinks my ambient temp is 35-40C. The sensor is right by the southbridge right?

Anyway, I took the system back apart and it seems some foam had got pinched and the CPU was only making tight contact on about 25% of its surface. We're gonna fix it up and try again. Wish me luck!

-Rav

[Hoot]

Rav;
If you have a piece of insulative foam on top of your in-socket thermistor, chances are that it is trapping the heat from the other components in the socket and the thermistor is reading that trapped heat. With good insulation, it does not take much power being dissipated in some SMD resistors to add up.

Consider one of these:
http://forums.overclockers.ws/vb/showthread.php?s=&threadid=59636

Hoot