I'm surprised no one else has spotted this
followup to the Mac Whispers WWDC article. It's a posting in the MacWhispers comments from Jack that further explains the article. He seems to think the performance issues suggested by eWeek are baseless. Sure hope he's right about the 15" Powerbook...
"I am being extremely cautious about what I say and how I say it... mainly just retelling what I'm getting from guys who I know have given me solid data in the past. That said, I might do a speculation roundup this week, just rambling on about coulds, shoulds, mights, and what ifs... All I actually "know" with any degree of certainty is in this article.
The Xserve motherboards are built elsewhere, as is the assembly done elsewhere. So, I have nobody I deal with who has information on that product at this time.
And yes, the PPC 970 fully supports the precise same PowerPC instruction set that is supported by the G3 and G4, with zero "code optimizations" to make that basic level of functionality happen. ALL G3 and G4 compatible software, including all flavors of OS X and OS 9 (in Classic), will run just fine on the 970 systems. "Optimization" can improve basic performance a tweak here and there, but only very, very modestly.
Yes, we are certain (as we can be, depending upon other people's word) about the 970 Powerbook 15.4-inch. At this time, we have zero information on the 12 and 17-inch variants... again, nobody to talk to (yet).
Finally, the 980 migration is presently happening upstream from our sources... meaning no tangible activity has migrated down to the production floor anywhere... which is where we get our info."