Quote :
In an early review of Flash Player 10.1, however, Anandtech still found significant improvements in CPU utilization under Mac OS X, dropping from 450% CPU load to 190% in viewing full-screen Hulu content on the Mac Pro used for testing.
Going from roughly 450% down to 190% (or a bit over 10% of total CPU utilization across 16 threads) made full-screen Hulu playable on my machine. In the past I always had to run it in a smaller window, but thanks to Flash 10.1 I don't have to any longer.
With actual GPU-accelerated H.264 decoding I'm guessing those CPU utilization numbers could drop to a remotely reasonable value. But it's up to Apple to expose the appropriate hooks to allow Adobe to (eventually) enable that functionality. Until then, even OS X users have something to look forward to with the Flash 10.1 upgrade.
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Or Adobe should really impress me with a nice version. 
