Which Laptop can I run Catalyst or PixelMAD on?

You can run all versions of Catalyst or Pixelmad on the 15" and 17" Aluminum Laptops.

http://www.apple.com/powerbook/

Both of these contain the Radeon 9600 Graphics chips.

Your movie playback performance will depend on the poor hard drive inside these things.
Graphics-wise these things are fine.

You might also be able to use the current 14" iBook - which I think has a Radeon 9200 graphics chip.

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Catalyst and pixelmad will work on other Laptops - but Colour FX will not function.

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You will need to have Quicktime 6.5 and Mac OS 10.3.3 for best performance.
OS 10.3.3 is available from:
http://www.apple.com/downloads/macos...nedupdate.html

We ran Radiohead last year off a 15" Titanium Laptop.