Date: Mon, 29 Dec 2003 17:02:55 -0500 From: Martin Cracauer <cracauer@cons.org> To: Tim Kientzle <kientzle@acm.org> Cc: Martin Cracauer <cracauer@cons.org> Subject: Re: Power consumption in desktop computers Message-ID: <20031229170255.A87023@cons.org> In-Reply-To: <3FEF2D62.8010906@acm.org>; from kientzle@acm.org on Sun, Dec 28, 2003 at 11:22:10AM -0800 References: <20031225224609.A5326@cons.org> <3FEF2D62.8010906@acm.org>
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Tim Kientzle wrote on Sun, Dec 28, 2003 at 11:22:10AM -0800: > > Ouch! I've tested a bunch of 'business-grade' desktops around > my office, and they all run 40-60 watts during normal use (not > including monitor) with peak power at boot time up to 70-80 watts. > This includes some P4s with lots of memory, CD-RWs, etc. > (The one exception is an AMD Duron system; it seems that > the AMD processors are uniformly power-hungry.) I wonder how that works. I finally got ahold of a datasheet of P-4 power consumption: http://support.intel.com/support/processors/pentium4/sb/CS-007999.htm#Table2 The least hungry P-4 takes 48.9 watts (1.30 GHz), the current 3.20 and 3.06 GHz models take 82 watts. Add the mainboard and the efficiency loss in the power supply. Are these business-grade ones maybe equipped with mobile P-4s? Martin -- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/ No warranty. This email is probably produced by one of my cats stepping on the keys. No, I don't have an infinite number of cats.
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