Advanced Micro Devices - Moderated (AMD) Message Board

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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 259.65

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3:59 PM EST

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To: semiconeng who wrote (4552)	8/11/2000 12:54:30 PM
From: Ali Chen	Read Replies (2) of 275872

semiconeng, <Qualifying the 0.13u process on a product that has 1/2 the throughput of another product would take twice as long.> Thank you for the explanation of stepper technique. However, you seem to be confused with math a little bit. Since the wafer area remains the same, it does not matter how many dies are per field, and the throughput of a stepper in terms of wafer per time remains the same. Certainly you have few Willi chips out of this, but I do not think that fewer samples per wafer would be so critical for "process qualification" unless the yield is in single digits. - Ali

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