I'm trying to build a computer, this is what I've choosen so far:
Intel® Core™ i5-2500K with Thermaltake Contac 29 BP
MSI P67A-C43 (B3)
G.Skill Kit DIMM 4 GB DDR3-1333 (CL7)
I'm still trying to decide which graphic card to buy and then the powersupply, I was thinking of maybe buying two HD6950 (flash to 6970 if lucky) and crossfire them, so the first question is what kind of powersupply would I need if I wanted to crossfire two HD6950?, the first powersupply I choose was a XFX PRO550W but I guess that's not enough for two cards and also the motherboard I picked at the time was for a single card, which one would you recommend me for about 130€?
edit. I wanted to add that I'm building this computer mostly for upcoming games like BF3.