Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 259.65

+2.3%

Jan 23 9:30 AM EST

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To: Bill Jackson who wrote (21419)	12/3/2000 11:48:48 PM
From: Ali Chen	Read Replies (1) of 275872

Bill, <I think the chip might have more than 25% of the thermal resistance across it.> Pete just showed us with numbers that realistically it is around 25%. <heat sinks have to be very flat as is the die surface> It is just another resistor in your model: <recall the heat flow equation is a series flow analagous to series resistors> <if they make all the other resistances as small as possible then the lions share of gradient lies across the substrate.> This is a _VERY_ big IF. The other resistances are already as small as economically possible. <Do they make any efforts to make the socket a heat sink?> Some do (using alumina ceramic packages), some not (using cheap plastic). <You would need holes in it and insulation with a fine pitch etc, but doable....> Some estimations of cost would be helpful here. I've heard that the crystalline carbon-12 is a very good heat conductor too :) Sorry for goofing around, Bill:) Best regards, - Ali

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