Messages in this thread | | | Date | Tue, 17 Jun 2008 16:26:36 -0700 | From | "David Rees" <> | Subject | Re: AMD Dual Core vs. Quad - Power Management |
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On Tue, Jun 17, 2008 at 3:00 PM, Marc Perkel <mperkel@yahoo.com> wrote: > Been running a few tests and an AMD motherboard booting 2.6.25 from > flash uses 0.33 amps if the CPU is a AM2 Athlon 6000. But if I used a > Phenom Quad core CPU 9550 it pulls 0.55 amps. > > In theory the 9550 should pull less because it's a lower TPD and the > phenom processor is supposed to be smarter about power management. > > So - why is the Phenom pulling more power? Is it because power > management software for the Phenom isn't updated yet?
At idle with CoolNQuiet on, all AMD processors seem to pull close to the same amount of power, varying between 7-11 watts. Except for the quad core processors, which pull significantly more at idle w/CnQ on than dual and single core processors.
Tom's hardware has a nice chart listing power consumption here, all his testing was done under Windows. His tests show the Phenom pulling about twice the power of the Athlon64 X2 6000+ which matches up pretty closely to your numbers.
http://www.tomshardware.com/reviews/amd-power-cpu,1925-7.html
Sounds like a question for AMD. The Phenoms seem to be pretty good except for the extra 10-11w of power draw at idle which is disappointing.
-Dave
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