Temp monitoring

[Random Nonsense]

I just had an idea! would it be possible to Unsolder the in socket thermister on my 8KHA+ and solder on the wires to a senfu thermal sensor? or would it not work, i reckon it wont but wanna make sure

[mrpcman]

hmm..it may work, but don't you really want the monitor to probe the cpu core?

[Random Nonsense]

thats what im, planning..... the wires should be able to go under the socket, up and around and have the probe against the core! this way i can trust MBM5 to show true temps!

[Aedan]

It'll only work if the sensors are both the same type. If one's a thermistor, and one's a transistor, then it won't work. If they've both thermistors, but have different temperature co-efficents, then it won't work.

Cross your fingers and hope!

AidanII

[Random Nonsense]

hmmmmmmmmmm i will take a look at the thermister in the socket of my mobo... i may be able to fit it between HS and the CPU package up against the core........ then i could lead wires under the socket and solder em on

[FireControl]

Some mbs have extra thermister sockets.I use mine just under cpu.

[dimmreaper]

I suggest you refer to the following document if you wish to acurately monitor the CPU temperature.

http://www2.amd.com/us-en/assets/con...docs/24228.pdf

[Kaitain]

Thank you for posting that link, dimm - as it happens I was wondering where to mount my new thermocouple setup

The previous revision wanted holes drilled into the heatsink, which was impractical for many modern designs.

[Random Nonsense]

dimm i know about what AMD say to do....... but that MUST make it run a little hotter....... i think on the side of the core gives me a good enough reading...

[mrpcman]

I just play it safe and add 10C to whatever it says.

[dimmreaper]

Originally posted by Random Nonsense
dimm i know about what AMD say to do....... but that MUST make it run a little hotter....... i think on the side of the core gives me a good enough reading...

It depends on how thick the base is, but yes the drilled thermister cavity method can impare cooling. When I perform "real-world-non-simulated" wetsink tests in my lab, I do it in two slightly differing ways. I drill the hole to the center of the die in one waterblock, and drill the hole to the edge of the die in a second identicle waterblock, and collect data with both parts. Then I run the tests again to ensure repeatable results(and a third time often).

[robbie]

Originally posted by Random Nonsense
thats what im, planning..... the wires should be able to go under the socket, up and around and have the probe against the core! this way i can trust MBM5 to show true temps!

I doubt that you would get TRUE temps. The reason why, thermistors read a resistance. If the temps go up the resistance goes down. If you add MORE wire to it your adding more resistance, thus throwing off the calibration.


Though I don't know if the few ohms that you do add will count that much.


Well that's how it works.

Rob