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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: misen who wrote (220208)	12/12/2006 11:58:49 PM
From: pgerassi	Read Replies (1) \| Respond to of 275872

Dear Misen: A production line is a group of tools necessary to process a wafer through all the steps needed from a raw wafer to a finished set of dies. With Intel and its copy exact, this set of tools are identical to all other sets producing that CPU die with each set being one production line. The steps are done the same way on a fixed path from start to finish. AMD does not need the same tool for a given step, but any tool capable of that step with all of the settings required of that tool. Thay way the path is dynamic and goes to the least used tool capable of the current step. This means that instead of a fixed set of equipment for each production line, AMD has an equipment pool with many dynamic paths through them. Thus each tool is as fully utilized as it can be. If a tool becomes a bottleneck, either additional tools of that type are added to the pool or a similar tool has settings made for that step and it is added to the step tool resource list for that die design. Rocket lot yields are more likely to be lower than production line yields because the latter can be tweaked for the design while the former doesn't have the time. Pete