What GPU should I buy to use with the rig below ? (I hesitate between the Nvidia's 580 and ATI's 7970) I'm not especially looking into a future-proof GPU, just the best bang/buck current card for current games. N.B: will play single screen only (no multi for me), and won't use 3D neither. CPU: i7 2700K Memory: 16 GB DDR3 1600 MHz (2x8GB) HD: 150Gb SDD PSU: some good branded 1000 or 1200W OS: Win7 64bit Mobo: P8Z68-V/GEN3 GPU: ? ? ? ? ? ? I was just about to get the 7970 until I come here and see tons of ppl complaining of screen tears, flickering and bugs.... Is the 7970 to be avoid ?