Ati Radeon 8500

[Joshua]

The Radeon 9000 should work as it is "backwards compatible" with the Radeon 7500 (This is not a money back garantee however).

The drivers are "optimised" for the 7500 so even the 8500 will be missing some "whistles and bells" on the first pass (but should still give a speed boost over the 7500).

Where are you getting your information from?  We haven't released anything to this effect.  The "first pass" drivers are "optimized" (if you can call it that) for compatibility -- we're attempting to make it work with as many Radoen cards as possible (we'll release a list of tested cards a bit closer to the OS4 shipment).  The "bells and whistles" specific to each Radeon chip will probably come later in updated drivers.