Ok and I'm newer to all this but if I only have one 7970 will I still be able to use eyefinity? And which 7970? Sapphire vapor X or radeon 3gb ghz??
Yes. Eyefinity requires all screens be hooked up to one GPU anyway. And hooking up 3 monitors is pretty easy. What do you want to play on them though? What resolution are they? More screens = higher res, and THAT'S were you start needing crossfire for lots of games, instead of just the occasional crazy game like crysis.
The radeon refers to the reference card. The sapphire vapor x is a non reference model. Basically it has a higher clock than the reference model and it has a way better cooling solution. I would highly recommend the Sapphire over the reference model.
Depends on what framerates you want. You won't hit a minimum 60 fps totally maxxed out, but will be able to average 50-60 with ultra and a few selective turn-downs. (Mostly water effects, especially for an AMD card.)
So it won't hit 60 fps from seer power without Xfire? And that's cool just wondering around how powerful this card is standalone or if I should just spent the extra money for second one.
The only reason I've suggested not getting 2 is because your current board only runs the second pcie x16 slot at x4. I don't think that's fast enough for a 7970. And if you are going to buy a new board and CPU because of that id wait for Haswell/steamroller. Really hoping steamroller turns out well.
I could be wrong though. You might look for benchmarks of 7970s in crossfire with an x4 2.0 slot. Maybe it doesn't get hurt that bad. If it's less than a 20% hit and doesnt cause stutter or problems Id probably get 2 now because of the extra free games and the fact you plan to get two eventually anyway, then after the CPUs come out decide and get the new board to get the full usage out of them.