Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 240.58

-2.5%

Nov 17 3:59 PM EST

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To: Ali Chen who wrote (5521)	8/18/2000 2:10:29 AM
From: Mani1	Read Replies (1) of 275872

Ali re <<I don't want to enter into another useless discussion.>> Then, don't. Re <<I guess you just need to buy a cheap $25,000 infrared camera to see how reality fares relative to your statements. >> I use one on an almost daily basis. I also have done substantial work on pin fin optimization. For a copper pin fin to provide a meaningful advantage over a power ranges of a typical CPU, the aspect ratio (length/width) of the fin needs to be very high, almost un practical. The base heat spreader is a different story. For a coppermine, copper fins are virtually useless. The article you posted, says "the pins can be substituted by copper pins that are approximately 20 percent more efficient. This sentence is as meaningless as it can be. If you put in 0.1 W power in the sink with free convection, then copper won't even help 0.01%. If you put in 1000 W and have liquid forced cooling then copper fins helps a lot. For a typical sink and a fan, and power of around 30 watts, copper fins add virtually zero. Mani

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