Not all 5xxx series cards are worth getting "because they do DX11". As coozie7 pointed out, the HD5670 is too slow/weak to actually enable any of the DX11 goodies it technically supports.
Honestly, to actually use DX11 you don't want anything less than a GTX 460 or ATI 5830/5850 in my opinion. I'd suggest following ct1615's recommendation based on your power supply capabilities.
Not all 5xxx series cards are worth getting "because they do DX11". As coozie7 pointed out, the HD5670 is too slow/weak to actually enable any of the DX11 goodies it technically supports.
Honestly, to actually use DX11 you don't want anything less than a GTX 460 or ATI 5830/5850 in my opinion. I'd suggest following ct1615's recommendation based on your power supply capabilities.
sry for my late port here guys....
DX11 is not the way 2 go i think... and i still game in winxp.(dx9)
and i got the HD4770 as i saw its performance is better than both... thanks guys for your sugg anyways