My understanding is the Catalyst drivers work well in openSUSE-12.2.
The version of X and the newer kernel in openSUSE-12.3 is causing problems with both nvidia and fglrx (catalyst) drivers. wrt fglrx (catalyst) there is nothing new there IMHO. Typically, going back as long as I ran remember in GNU/Linux, there has been a time lag before a new Catalyst driver was provided to support the latest and greatest version of X and of the kernel. As long as one does not insist on being on the cutting edge of the latest and greatest openSUSE release, indeed any GNU/Linux release, one can have the catalyst driver and play their games (such as on openSUSE-12.2).
My suspicion is it is mostly a matter of patience while waiting for a new fglrx version to hit the street for those with non-legacy AMD graphic hardware and with new versions of X and new versions of the kernel.
I can explain though, why I would want to try the latest beta drivers.
They have fixes for Teamfortress2 and serious sam 3.
Its not just because of the problems I have on Linux, windows is not that much better when it comes to gaming.
And before someone wants to argue that.
I tried installing grandprix 4 on windows 7, no luck, what ever compatibility mode I choose.
Star Wars republic command wont work either.
Area 51 , a free game which run fine on xp, will not work on W7.
There are days, I whish I was not interested in games.
Hell YES>:)! Big difference. Running 2 large monitors in opensuse 12.3(KDE) and earlier…(9.3).
-gives your computer a boost.
(I don’t want to kick on the free developers, they are doing a great job).
-configurations possibility as logged in as root, -amdcccle at Catalystcenter. No editing in xorg files manually. Works!