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Pretty hard to achievePretty hard to achievePosted Oct 1, 2005 10:19 UTC (Sat) by man_ls (subscriber, #15091)In reply to: Pretty hard to achieve by drag Parent article: AOpen box inspired by Mac Mini (News.com) The review of the AOpen XC box makes my point nicely. With a P4 2.54 processor, it draws 51 W idle (29 dB), 97 W max (31 dB). However, when a P4 2.8C was used, it drew 81 W idle (36 dB), 150 W max (42 dB). The CPU alone accounts for differences of 30 to 50 W, which is more than the whole mac mini consumes. If the Pentium D is the power-hungry beast it seems to be, it will be difficult to make it quiet. I would take bets at 50/50!
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Pretty hard to achieve Posted Oct 1, 2005 10:36 UTC (Sat) by drag (subscriber, #31333) [Link] In the second test it included a Ti4800 card with a big fan. The fan on that card alone made 39 dBA outside the case.
Also those types of cards are notorously power-hungry, even at idle. The design of them is purely for performance with very little concern for economy of noise or energy.
At idle the cpu differences should be minimal. If the machine is not using the cpu power then the differences would, at most, be within a few watts of each other. But at idle there was a 30 watt difference. I don't think you'd get that from simply a 10% increase in clock speed, most of that from the vid card.
Pretty hard to achieve Posted Oct 1, 2005 12:12 UTC (Sat) by man_ls (subscriber, #15091) [Link] Ooops, you are right. That explains a large part of it. Still, I would take bets at 50/50 :)
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