6870 open source driver state?

What's the performance difference between Windows and catalyst on the Foss driver, in terms of fedora also running kernel 3.16 

Thanks!

phoronix has some interesting results, take a look at some of their articles, not all are Windows vs Linux... I'm considering going AMD myself as I'm not happy with nvidia when it comes to Linux 

http://www.phoronix.com/scan.php?page=search&q=Radeon