Ati's dont fold as the folding core relies on shaders. Thats also the reason why the ATI folding client uses the CPU core to make up for this lack of power it needs.
Unless ATI's completely redesign there architecture or the F@H boys rework the client it wont happen.
And all those cores on 1 card will never game well, there can be such a thing as too much imho
(unless its paint