Side note : [I tried compressor 3, on the base mac pro with the 1080p Canon 5D Mark II sample from the Canon Japan website.
I tried exporting to AppleTV, and i hit the preview button to see the result, you know that window with the slider (never used the compressor before). The playback was choppy. Is that normal?
Or maybe i was doing something wrong.]
Regardless, i think the 2.26ghz mac pro is pretty fast. Sure it wont pop up and open everything in split seconds, but when you can use all 8 cores and programs get extra nehalem instructions built in its going to be a lot faster. At some point i was running Logic Pro, Compressor, iPhoto and Aperture at the same time, switching from one app to another, carrying out operations, like export etc.. and it just did it no questions asked, or any pauses

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Remember MMX, SSE, SSE2 etc..? Well we saw the speed boost. Sure right now there may not be a huge speed increase, but over the next few months as programs get updated, maybe even with the Snow Leopard release as developers change over to 64bit only, or optimize their programs a bit more, we'll definitely see the increase.
Im expecting my 2.26 mac pro tomorrow. I hope its what i think it is. The 2.8 mac pro is still a great purchase at a right price, but if you can afford the new mac pro buy it. Dont think anyone will regret it.
I read some posts saying the Pro tools dont work well...for now? Apple should release an update or just a new version. As for virtualization VMWare built in some optimizations in their Fusion program for the nehalem processors.
Anyway, this kind of reminds me of the DPReview forums when the D3X showed up

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If on the other hand you can wait a year, then wait...the next mac pro im guessing will probably get a re-design and next year's processors will be simply unbelievable if they go with the 32nm and 8 core chips.
Thats it for my late night rant

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now going to clean/clear my desk for tomorrow's arrival.