On Fri, 2008-05-23 at 09:34 +0100, mbm wrote:
Pentium D 925 not listed, but they aren't the most energy efficient of the intel range (a core 2 duo draws around 6-70 watts). Even so, a power differential of 70 watts over a year of 24x7 running adds probably about 80-90 UKP
You need to search for a cheaper energy suppler ;-) I think I get about 100 watts for that.
Comparing TDP doesn't really give you the full story as that is worst case and different processors scale in different ways between idle and full load, have different power management features etc.
As an example my new desktop is a core2quad which on paper has a higher TDP than my old AMD64, yet despite having 3 drives rather than one and a power slurping Nvidia 8800GT (compared to a cool running and bus powered old Quadro in the old box) I find that if my Smart Meter is to be trusted then it actually draws slightly less power when idle.
That said I think Adam is right and that CPU is known to be a bit of a power sink
Mick
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