I'm assuming that one is factory overclocked and the other isn't, but the coolers look different too. My primary goal is gaming. Could I save some money and get #2? Or is there a significant difference between the two?
That I'm not quite sure of. From what I've gathered from what little I know of the ghz cards is that they don't have as much overclock headroom as the normal 7970's may have. I look at the ghz edition and feel its the card to get if you want the best without overclocking.