But is Yum as fast as aptitude? I recently used OpenSuse and that Zipper thing was horribly slow in everything it did.
I'd say yum is a little slower at search (and a hell of a lot slower if you use it with bash-completion), but it also has finer-grained dependency tracking than your typical DEB repositories. AFAIK, this isn't a property of the programs, but of how the repositories are set up.
Of those I've tried, Fedora is also the only major distribution that sensibly integrated 32-bit compatibility--32-bit on 64-bit isn't treated like a second-class citizen, with different names and vastly reduced selection.
Yes, it is working fine on my old ATI Radeon 9800 Pro 128Mb (R350), running the desktop edition of Maverick. I haven't tried any games yet, but glxgears runs fine, and continues to run fine if I drag it's window around the screen.
Evergreen (Radeon HD5xxx) 3D acceleration is still in at an early stage though. If you want anything more than just mode-setting on an Evergreen you might need to use ATI's proprietary Catalyst driver instead.