While we poked and prodded our new iMac trying to answer all of your questions, Ars Technicha went their traditional route and benchmarked the hell out of the poor iMac. The 20-inch, 2.4GHz machine with 2GB or RAM " outdid a MacBook Pro with an identical CPU and FSB in my testing, and it was more than competitive with a Mac Pro in formal tests." That said, these aren't huge increases over modern hardware. And the Mac Pro destroyed the iMac in heavily multi-threaded tests. Such is the predictability of performance in all x86 era. [Ars]
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