I don't use linux for gaming, just for dev, image editing (gimp) & such. My amd card works great for all those things. One thing though, posting on teh in Chrome is slow as hell*. Latest Chrome builds are really struggling with javascript (I'm assuming the teh editor is js-based). Even jquery fx that were smooth as silk turned choppy about a month ago. But they're still smooth in Midori (also webkit).
*I should clarify: typing is slow as hell, posting is normal.
EDITED: 10 Oct 2014 15:16 by DSMITHHFX