Just curious... how was the game holding up with just the 6870 in there? I thought about x'ing my older 4870 and 4850, but at the time people were having a lot of issues with XF and SLI, so I just nabbed a 5870 cheap off ebay (talking like $68 cheap), and it's holding up quite well on my old XP box (4ghz Dual-core rig).

Just wondering if you really NEED to run two GPU's for this game--just one may suffice (unless you're running some ungodly resolution or eyefinity setup).