Author: Matt Taylor
Date: 04:09:30 03/18/03
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On March 18, 2003 at 00:06:36, Robert Hyatt wrote: >On March 17, 2003 at 22:37:33, Aaron Gordon wrote: > >>On March 17, 2003 at 15:26:15, Sakkas Takis wrote: >> >>>The AMD are geting very hot when you use chessprograms >>>Go for Intel >> >>How do you figure? Look at both AMD and Intel technical documents (or test one >>yourself). AMD's run quite a bit cooler (by some 20-30 watts). > > >Just for the record, "watts dissipated" is not the same thing as "running hot or >cool." The Cray-3 for example radiates 125 kilowatts. Yes, that is kilowatts. >It runs about -70C or so, immersed in liquid. A chip can convert more watts to >heat, but _still_ run cooler if it has a solid path for the heat to escape >quickly (as does the Cray with copper rods and plates everywhere). > >That is the limiting factor on speed, in fact. Ramp up the voltage to ramp up >the clock and eventually you reach the point where the heat can't get out as >quickly as it builds up, and the thing melts. Then for the record let it be known that my AthlonMP 1600 (~62 W) runs 3 C above ambient temperature. The newer chips on the smaller die may be worse due to reduced surface area. My AthlonXP 2500 has too much thermal paste on it and still only runs around 25 C above ambient or about 54 C. -Matt
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