Martin 53N 1W wrote:

~misfit~ wrote:

Peter Smithson wrote:

[...]

I realise it won't do the computers any harm to process data -
that's what they were built for.  It's just that the FAQ entry
suggests they

[...]

I agree. Emphatically. Otherwise. This current box I'm on runs with
a CPU die temp of around 34�C using office apps/net surfing etc.
Start up SETI or BOINC and that quickly climbs to above 50�C. At a
guess I'd say it uses 40 watts more power at least to run SETI and
from the above figures you can see that it certainly generates more
heat.

34 = Tambient + k * Pnoload
50 = Tambient + k * (Pnoload + 40)

50 - 34 = k * ( ( Pnoload + 40 ) - Pnoload )

16 = k * ( 40 )

k = 16/40 = 0.4 deg C per W
             ~~~~~~~~~~~~~~~


Are you sure about that +40W?

I don't see anything like that sort of temperature rise. Or is my
heatsink really over x4 better than yours? ( (;-P) )

(For an AMD Athlon 1900+, air cooled.)

Not sure about the 40W, was a guess, going by the increase in heat produced.
My CPU is an XP1800 running on a 200Mhz FSB at 2.1Ghz (10.5x) and 1.80vcore
using the AMD-supplied HSF.
--
~misfit~