Note: Viewpoints come from a very high end and critical perspective.
The Bad
PCI-X not as good as PCI Express (?)
http://www.extremetech.com/article2/0,3973,909447,00.asp
(Though I have to say, I don't think I use a single PCI slot in my current towers)
Photoshop is only 7% faster than a prorated G4 at 2.5 GHZ.
No new RAM format?
Video cards not super impressive
Still only two hard drive bays
Bibble performance test. Who the hell uses Bibble? I've never even heard of it. Enough with the trickery already.
Steve said 3 GHZ. Steve said 3 GHZ. Steve said 3 GHZ.
He has a history of saying things like that. My guess is that he does it to put the pressure on his own staff and the staff of Apple's providers. Didn't work this time.
64-bit is still basically a meaningless statement (not the 2.5's fault though).
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The Good
Video performance is ridiculous
http://www.apple.com/motion/video/
http://www.apple.com/finalcutpro/video/
Audio performance is crazy
Liquid Cooling.
The G5s I've seen in store are amazingly quiet. I hope this keeps it that way.
A DP G5 still kicks the crap out of anything I'm currently using.
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Side notes:
I predicted several times in these forums that there was NO WAY they were bringing out a 3GHZ. In fact, I predicted 2.5 tops many times. The koolaid is wearing off. Sucks to be right.