As to the Beryl requirements, my Toshiba Satelite laptop with an ATI Mobility Radeon 7000 works just fine (2.8GHz / 1 GB ram / Ubuntu 7.04), it also does pretty well with Compiz Fusion. I have tried installing Vista on this same computer, and M$ throws a tantrum over it. My video card rates at a 1.0 (basically telling me that it sucks by windows standards) and I can't run any of the aero interface. The laptop itself is only 4 years old and not even close to hitting middle-aged.

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