CPU Temp N/A on P2B ?

[Bob]

I have a few P2B systems. They all report "N/A" on the BIOS screen for
CPU temp. One that I checked has a Cel 333, the other PII366, both
report "N/A".

Shouldn't these be reporting their temp ? Or was that a later CPU
feature?

Thanks,

 

[Stephan Grossklass]

I have a few P2B systems. They all report "N/A" on the BIOS screen for
CPU temp. One that I checked has a Cel 333, the other PII366, both
report "N/A".

Shouldn't these be reporting their temp ? Or was that a later CPU
feature?

You need to attach a thermal probe at the respective location on the
board. (IIRC this should be an NTC resistor, 10k @ 25°C.) Reading the
temperature directly from the internal diode was not supported until the
P3B-F, although your processors (BTW: there is no 366 MHz desktop PII)
would allow it.

Stephan

 

[Bob]

You need to attach a thermal probe at the respective location on the
board. (IIRC this should be an NTC resistor, 10k @ 25°C.)

What's an NTC resistor ? I am familiar with electronic components but
that one is new to me. Also, is there a handy web page that
illustrates the place/procedure to attach it?

Reading the
temperature directly from the internal diode was not supported until the
P3B-F,

That would explain why it works on my P3BF

?(BTW: there is no 366 MHz desktop PII)

LOL. OK, how about a PIII/366 then ? It runs at 550, so I could make
it a PIII/550 if you want.

Thanks,

 

[Stephan Grossklass]

What's an NTC resistor ?

Whoops, got that wrong. It must be a *thermistor*. (Sorry, not yet an
expert in electronic components.) How to build a probe:
http://www.targetpc.com/hardware/articles/thermal_probe/

Also, is there a handy web page that
illustrates the place/procedure to attach it?

That should be shown in the manual. The connector is called JTCPU,
between the WOL connector and VIO jumper, next to the AGP slot.

LOL. OK, how about a PIII/366 then ? It runs at 550, so I could make
it a PIII/550 if you want.

OK, that's better. The box doesn't have a lot to do, I guess?

Stephan