Hi guys I posted a few weeks ago re upgrading my old Ge Force 6800 to something a bit more up to date, but have since decided I'd be better to go the whole hog and get a new rig. I'm looking at a choice between the following: Dual nVidia GTX 550 Ti 1GB PCI Express Graphics Card or ATI HD6870 1GB PCI Express Graphics Card I gather the dual nvidias would be faster than the individual ATI, but would it be a marked increase? (I'm looking at the moment to play Skyrim at a decent rate, but obviously there's the future to consider). I've not had a system with 2 gpus before - is there anything I need to be aware of or is it basically the same as having 1 card to the end user? Any advice much appreciated!