Microsoft's Andre Vrignaud comments on the recent Playstation 3 CPU Speed Downgrade Rumor:
"Remember my earlier post dissecting an alleged PS3 Rude Q&A? There's just something about a finely honed - yet evasive - turn of phrase that sets the Spidey-sense tingling, and I'm getting that feeling all over again around the rumor of the Playstation 3's main CPU speed being downgraded.
First a bit of history. Back in June Kotaku posted an IM conversation with an alleged PS3 developer. That developer stated that CELL yields were low, and that the already reduced 3.2 GHz CPU speed (from a promised 3.5 GHz) could end up being as low as 2.8 GHz. (He also stated that there would likely be an external power supply, which I 100% believe to be the case.) Anyway, at the time I found the conversation a fascinating read because it struck me as very credible.
I don't know how much you know about the CPU manufacturing process, but a good summary can be..."