Yields are not affected. So, fingers crossed this technique will be rapidly adopted from PPC97x manufacture. About time the G5 got more than a minor MHz improvement. I'm still optimistic we'll see dual core processors by Q3 2005 (or at least an announcement). I suspect we have one more minor bump to PMG5, say 2.8GHz, and the arrival of X800, then we'll see serious changes in the subsequent revision (I'd hope we'd also see a case which will take four internal drives). If this allows faster CPUs without a drop in yield, perhaps it'll also enable the release of the mythical XStation (4xG5 high-end A/V workstation)?