I am building my first rig soon and have been stuck on picking a GPU. I am deciding between a GTX 680 or a Radeon 7970 Ghz edition (links below). I have seen such mixed opinions and would like a clear answer. I will be playing at 1920x1080 and was wondering if the 7970's 3gb of VRAM will pose an advantage over the 680? Also, would either be better for SLI or CrossfireX? I have been leaning towards the 7970 because it is cheaper and supposedly out-performs the 680 and overclocks better. I have also heard that either card may perform better in certain games.
GTX 680:
http://www.amazon.com/EVGA-Signature2-Dual-Link-Graphics-02G-P4-2687-KR/dp/B008AFZ0VQ
7970 Ghz:
http://www.amazon.com/gp/product/B008WAMV3Y/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B008WAMV3Y&linkCode=as2&tag=c09_11-20
Any insight is appreciated and feel free to ask any questions or make other suggestions (my budget is no greater than $500).
GTX 680:
http://www.amazon.com/EVGA-Signature2-Dual-Link-Graphics-02G-P4-2687-KR/dp/B008AFZ0VQ
7970 Ghz:
http://www.amazon.com/gp/product/B008WAMV3Y/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B008WAMV3Y&linkCode=as2&tag=c09_11-20
Any insight is appreciated and feel free to ask any questions or make other suggestions (my budget is no greater than $500).