[lm-sensors] Curious temperature readings
pford at justcroft.com
Fri Apr 7 15:47:57 CEST 2006
I'm new to the lm-sensors world, but I have some curious results that
I'm struggling to understand.
My hardware is:
Pentium4 2A GHz (Northwood, 512Kb cache, socket478)
Motherboard is tricky to identify, but says 845CA so maybe it's
a Jetway 845CA - that seems consistent with their specs and
looks like an Intel 845 chipset.
Sensor chip is a Winbond w83627hf.
Software is Mandriva 2006
I started to get the system shutting down spontaneously, often
overnight, but also while I'm working. No obvious application causing
it. I did memory tests and that came up clean. So I decided to monitor
CPU temperature and voltages using lm-sensors and KDE-SystemGuard.
On the original hardware, with a standard Intel heatsink and fan, I got
three temperature readings:
I figured temp3 was CPU chip temperature, and a bit high: the cooler
looked a bit grubby and I have a feeling that the thermal grease had
been disturbed. So I looked for a way of cleaning this up, and found the
Asatek Micro Chill cooler - so I bought one (retail therapy I guess...)
Anyway, with this (big) cooler now on the chip, my readings are:
temp3: Started at 118°C (!) but is gradually working its way down
Now I'll admit that I might have screwed the cooler installation, but I
was surprised to see 100+°C on a running machine. So have I
misinterpreted the readings, or maybe the sensors are not connected like
Anyone have any suggestions?
One other thing, VCore1 is a bit fluffy, with occasional spikes to 1.8V
and dips below 1.4V (should be 1.5V). Does that sound reasonable?
Peter Ford phone: 01580 893333
Developer fax: 01580 893399
Justcroft International Ltd., Staplehurst, Kent
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