Well, I've never CrossFired any cards and I've barely OCed before. I was thinking that I would like to xfire the 4870 later, but was wanting to buy one (later, I have a 3850 right now) and see how it did on games. As of now I only really play BF2142, but when I start getting more money (grant money and steady job starting the 26th) I was going to start experimenting with games. The 4870 plays Crysis on High, right? That seems like all I'll need, but I was worried about future proofing. Then again, I'm worried about xfire not working, so...