Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 245.19

-0.6%

11:59 AM EST

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To: combjelly who wrote (228850)	3/25/2007 8:52:57 AM
From: Pravin Kamdar	Read Replies (2) of 275872

"My reading of Intel (who else!) papers is that there are not enough atoms in a 65 nm structure to be statistically modeled." It's the other way around. Random variations due to "not enough atoms" is what requires statistical modeling. In particular, statistical modeling of threshold voltage variation, due to the random doping effect (the channel areas for same size devices receive different numbers of dopant atoms) is absolutely necessary for certain types of differential circuits, or circuits whose stability depends on matching -- SRAM cells, for instance. Pravin.

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