Alright TPU Gods...What would be better, 2x 7970's 3 gig in crossfire or one 7990 6 gig . I know I would be spending about 1200.00 on 2 7970s and from what i hear about 800.00-850.00 on 1 7990. has anyone heard anything on what the talk is on this? Curious to see what the fine folks at tpu...