We heard that the last R520 spin at TSMC is at 3% yield rate for 24 pipes and we can certainly expect a much lower yield for 32-pipes R520. Obviously ATi is still facing some yield issues for their R520 @ 90nm process and ATI could resort to a 16 pipes R520 for better yield and make up the loss with a much higher core clock of 700MHz+ as INQ has previously suggested.

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