Comment Re:This isn't surprising (Score 1) 156
I've had much the same problems and concerns as the original poster running Eyefinity, so I'll expand a bit on the subject. For a quick summary, trying to configure Eyefinity correctly on multiple systems makes me long for the days of manually typing in Xorg.conf, and that's saying something!
When you're trying to play a game under Windows, the game will see each of your monitors as a separate physical device, and performance will range from being fine to horrible to not at all. Under Eyefinity, the ATI driver essentially tricks your application into thinking that it has access to one huge monitor up to almost 8K on a side. You get all the benefits of a single monitor like homogenous DPI, color matching, and performance. This was the original purpose for Eyefinity. If you're looking for 3D support, nice VDPAU playback, and all of the other capabilities that a modern video card has across multiple monitors, you need Eyefinity or NVIDIA Surround. There's no subsitute.
What about Linux? I've only experimented a bit under Linux due to the fact that many games don't have a Linux version, but to be frank, outside of the binary NVIDIA blob, support for advanced features really suck, no matter if you're talking about 3D gaming or accelerated playback. I wish Valve the best, because SteamOS is the one thing that I can see that might give AMD a push to work on their Linux drivers. I said back in 2003 that it would be really nice to be able to ditch Windows and to play all of my games in Wine. We're a lot closer now than back then, but there's still a sizable gap to catch up.