This is one reason I always have Window's based desktops. They will always have drivers (ok buggy sometimes) of the latest hardware, especially video cards. From my favorite online store newegg... It's only $160.00. link
XFX Online Store Exclusive Offer: XFX Radeon HD 7770 Black Edition Super Overclock
This HD 7770 Black Edition Super Overclock comes with impressive specs. 1120MHz 1GB DDR5 with Double Dissipation and Ghost Technology. Outputs: Dual miniDP HDMI DVI.