CPU temp's on core 2 duo,
should they be significantly different?
George Hartzell
hartzell at alerce.com
Mon Jun 23 20:52:08 UTC 2008
Josh Carroll writes:
> [...]
> I'd recommend taking the heat sink off and seeing how the thermal
> grease is spread on the CPU's head spreader and on the heatsink
> itself. If it looks lopsided or extremely thick on one side of the CPU
> package or extremely thin (to the point where you can still see the
> sheen of the heatsink or heat spreader), then re-mount the heatsink
> and try to make sure it's evenly distributing the pressure down on the
> CPU package.
This is a Shuttle XPC box. I pulled the heatsink/cooler assembly and
there didn't seem to be any obvious asymmetries in how the the grease
was distributed. I swirled it around a bit, reassembled, and am
seeing the same kind of spreads.
Here's the machine pretty much idle
dev.cpu.0.temperature: 44
dev.cpu.1.temperature: 28
Where top says:
last pid: 1217; load averages: 0.02, 0.51, 0.43 up 0+00:14:57 13:49:47
52 processes: 1 running, 51 sleeping
CPU: 0.0% user, 0.0% nice, 0.0% system, 0.2% interrupt, 99.8% idle
Mem: 22M Active, 13M Inact, 95M Wired, 1788K Cache, 15M Buf, 3797M Free
Swap: 4063M Total, 4063M Free
A could of dd if=/dev/urandom etc... quickly pushes it up, but the
delta remains:
dev.cpu.0.temperature: 51
dev.cpu.1.temperature: 39
Top says:
last pid: 1243; load averages: 0.98, 0.65, 0.48 up 0+00:16:07 13:50:57
54 processes: 3 running, 51 sleeping
CPU: 0.4% user, 0.0% nice, 92.5% system, 0.0% interrupt, 7.1% idle
Mem: 22M Active, 13M Inact, 95M Wired, 1788K Cache, 15M Buf, 3797M Free
Swap: 4063M Total, 4063M Free
g.
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