POST_reports_CPU_temp_as_7°_C/_4°_F_with_Athlon_1400_on_KT..

Hi:

I've been testing a Soyo KT400 Dragon Ultra (Platinum) motherboard
today with a couple of
AMD Athlon 1400 ("Thunderbird", OPN A1400AMS3C) CPUs. In both cases
the "CPU temperature protection is on" message says the CPU temp is 7°
C/ 4° F. Inside the BIOS itself, it reports it as 127° C/ 4° F.
These numbers are clearly wrong.

An earlier test of this motherboard with an Athlon XP 2100+ yielded
reasonable temperatures: 34° C/ 93° F.

I have read that the XP has in in-die temp sensor, whereas the regular
Athlon does not. The documentation for this board also says that the
CPU protection feature works only for the XP chips. But can it be that
this motherboard cannot correctly read the temperature of a normal
Athlon CPU?

Thank you in advance for any light you can throw on this problem.

-- Roy Zider

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Platform on test workbench:

Soyo KT400 Dragon Ultra (Platinum)
BIOS: K7VX4 - 2AA9 (8/17/2004 -- the latest)
AMD Athlon 1400 ("Thunderbird", OPN A1400AMS3C)
Kingston PC2100 DDR 256MB
Geforce2 MX200 AGP 32MB video
no other cards