Looking at replacing my Sons 6970 Xfire setup with just one card. He has a 2500K @ 4400 Mhz , 8 gigs of ram, running on a 1080P moniter. Would a Vanilla 290 work? I was looking at a 280X because of the pricing. He mainly plays BF3 / 4 , Skyrim. Only reason im replacing is one card is beginning to crap out.