TSMC: 40% yield for the 40nm process

@ 2009/11/02
TSMC has confirmed that it has new yield problems with its 40 nm engraving process. While in July yields of working chips reached 60%, rates have now dropped back to 40%. TSMC says that the problem should be resolved in the course of this quarter but the statement goes a long way to explaining the short supply of 40nm GPUs.

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