On Tue, Oct 30, 2012 at 5:32 PM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
And there is internal thermal paste inside the CPU package between the CPU die itself and the integrated heat spreader. That thermal material also explains why the silicon die temperature can jump so quickly. It has a higher deg C/W than the IHS and the heatsink on top of that.
Phil P.
Hi Frantisek,
I think that is pretty normal. Keep in mind this is the temperature within
On Wed, Oct 31, 2012 at 12:01:08AM +0100, Frantisek Rysanek wrote:
> Dear gentlemen,
>
> I've just tried looking at the CPU temperature via coretemp.ko on
> some SandyBridge CPU's. I have a desktop-grade Core I3 at 3.3 GHz,
> and a mobile Core i5 at 2.5 GHz. When I flip the CPU from "pretty
> much idle" to "each core running a cpuburn instance", the temperature
> reported by coretemp *jumps* up in a second. On the desktop CPU, the
> jump is about 10*C. On the mobile CPU, the jump is about 25-30 *C !
> It jumps up in a second after I launch the software load - and then
> it proceeds to gradually inch up, as the massive heatsink starts to
> warm up a bit (perhaps another degree C in twenty seconds to a
> minute).
>
the chip core, not at the external package.
And there is internal thermal paste inside the CPU package between the CPU die itself and the integrated heat spreader. That thermal material also explains why the silicon die temperature can jump so quickly. It has a higher deg C/W than the IHS and the heatsink on top of that.
Phil P.
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