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How to estimate watts

Posted by BostonGuru, 11-16-2007, 06:28 PM

I am looking at some rackmount chassis and most of them come with power supplies included. Most of the 1U that I look at have 250-300watt power supplies. The way I see it is 2 processors @ 130watts is 260watts right there. Thats not including hard drives, and the motherboard. Am I calculating this wrong because these power supplies seem too small? Also is there any place that lists motherboard and hard drive watts or is there a general industry rule of thumb? Does the number of ram sticks in a motherboard affect how many watts a motherboard uses. Thanks.

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