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To: Matt Peterson who wrote (24750)	5/12/1999 12:44:00 AM
From: Adam Nash	Read Replies (1) \| Respond to of 213177

Back from WWDC, got news, got news... :) Can't believe I am still waiting for G4 - it has been years since the first demos of VMX/AltiVec/G4... The good news is that it will be worth the wait. Don't ever underestimate the utility of 32 128-bit registers, a permutation unit, and MaxBus. The reality is that the bus advantages alone from the G4 could account for most of the 50% speedup. It is when you start vectorizing your code that you get the 2x, 3x, and even 10x multipiers. Once you see a 4x4 matrix dot-product done in 5 instructions, you never go back... :) Anyway, Metrowerks seems to have done a great job with C-level integration and support for AltiVec, so developer support should be easy. More importantly, as long as Quickdraw and Quicktime (and the new encryption APIs) take advantage of AltiVec, it will keep the Mac well ahead of the PC world in multimedia. There have been no surprises at Macworld, except that Uber made it out as "OpenPlay" on the Darwin site. Now everyone can use the cross-platform networking architecture that made Myth II. I, of course, was there, demoing my company's new support for the Macintosh. So, I was on the vendor's floor, and I didn't get to go to the new sessions on Carbon's new event model and Quartz...

To: Matt Peterson who wrote (24750)	5/12/1999 2:43:00 PM
From: Doren	Respond to of 213177

So, a 600mhz G4 would run Photoshop 225% faster than a 400mhz G3 My understanding is that a G4 running at the same speed as a G3 would run Photoshop %150 faster. Partially because of more powerful FPU but also because of AltaVec. In addition the new G4s are rumoured to have, AGP which should help, and I believe other enhancements to the pipe system. Because Photoshop users frequently must work with files larger than the available RAM Photoshop must constantly write and read from the disk, hence faster pipe = faster speed. Any other comments or clarifications? doren