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Politics : Formerly About Advanced Micro Devices

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To: Yougang Xiao who wrote (82610)	12/10/1999 1:37:00 PM
From: Shane Geary	Read Replies (4) of 1571928

Some Info on DRESDEN Capacity. I was talking to someone who has spent some time in Fab 30 and got the lowdown on AMD's capacity. It appears that they currently have 6 steppers installed. They aim to double this over the next 6 months. Steppers usually are the bottleneck tools in a well designed fab since lithography contributes 30% to the total equipment cost, but this may not be the case in a fab undergoing expansion. But let's assume they are. Say these steppers have a throughput of 80 wafers per hour. At an Overall Equipment Efficiency of 40%, this gives us 32 wafers per hour. Thus we have 32 wfrs x 6 steppers x 168 hrs = 32k alignments per week With a 26 mask process (anyone got firmer data?) this gives a total wafer output of 1230 wafers per week. Many of these will be engineering runs of course, but that is indicative of the overall capacity. (Note that I don't know if all the steppers are qualified at this stage). Regards, Shane PS Also, a couple of months ago I got word that AMD did have a copper contamination 'event', but got no sense of the magnitude.

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