Formerly About Advanced Micro Devices Message Board

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Politics : Formerly About Advanced Micro Devices

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To: Elmer who wrote (82647)	12/10/1999 9:35:00 PM
From: Bill Jackson	Read Replies (1) of 1572802

Elmer, If you take the average tested speed of all the acceptable cpus from a wafer you will find this average is what Petz speaks of. Obviously there will be speed variations among the candidates on the wafer and the speed and pattern of the speeds will be studied to see if any tweak of the process variables as well as of the bulk Si properties will make this average go up without decreasing the number of graduating candidates. This all seems quite reasonable in terms of quality control and will eventually lead to a higher yield of faster CPUs, which is in fact what we see as they perfect the process. Bill

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