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AMD to ditch SOI after 45nm

Posted on Friday, October 10 2008 @ 23:56:14 CEST by

FUD Zilla claims AMD's upcoming Deneb, Shanghai and Propus processors will be among the last silicon-on-insulator (SOI) chips for AMD as this process will lose its benefits after 45nm:
After 45nm, there won’t be any SOI process and 32nm for both IBM and AMD. This will mean the return to Bulk process with High-K in mind. Intel is using High-K for a while for its 65nm and 45nm and probably even for the previous CPUs. High-K as everything else in life had its good sides and bad sides, SOI made sense for some previous CPUs, and that is why IBM and AMD have decided to go down that road.

After 45nm SOI loses its effect, and its biggest benefit from this process was at 90nm, where AMD could score great clocks and superb yields for its K8 processors. In 32nm, there is no sense in using SOI and Silicon on insulator was partially responsible for big leaks and clock limitations of Agena 65nm quad cores.



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