Summary: Old card was not up to the challenges of windows 8 and media center so I bought this one. After installing and updating the drivers to win8 it is running great and the system does not restart itself all the time anymore. Videos play so much better now.
Summary: The other thing I notice about this card is that it runs 3-4 degrees hotter than my old higher-performance fanless card. I attribute that to the smaller heat sink on this card. Not an issue really.
Pros: I replaced a 6570 with this card because I do a lot of engineering (software and hardware) and needed three monitors. It fits fine in my Shuttle SH67H3 and--being fanless like my old card--is nice and quiet. I'm running the open source radeon driver on my KDE desktop Gentoo Linux system, driving three 1920x1200 Dell monitors with no problems. Compositing effects still work fine, and I didn't take much of a hit at all on my OpenGL graphics performance, which in my case...
Cons: If you're interested in Linux gaming, move on. None of the Unigine 3D demos will run with the open source driver at this time. They might with the binary fglrx driver, but I'm not interested in finding out. I'm sure the performance would be less than spectacular in any case.