no idea about performance since i didnt check benches of those two, i was just saying that sli drivers are better than xfire currently. im using 5870 crossfire and my other rig is 580 SLI. video card ram size would only really shine on big resolutions with anti aliasing
from xfire 5870 to SLI 580, no prob at all. no reinstalling of windows. just used driver sweeper to clean off remaining amd drivers that didnt get uninstalled.
from ontario canada here... yep im looking for a new ISP to move into since i will be affected by this UBB shit. sadly the only ISP that wont be using UBB is YAK!, they dont have service for my city.....