yes, 7970 GHz beats the 680 most of the time. Here's a youtube video that came out today that has the 7970 GHz and a 680 in it (also some other cards but oh well). http://www.youtube.com/watch?v=bpH_P-D_nXM
Skip to 9:20 for benchmarks.
Thank you sir. Unless Nivida comes out with some drivers in the next 24 hours that greatly improves their performance it looks like I will be grabbing a 7970. I think I will get the non GHZ edition though, (which still seems to beat a GTX 670 most of the time with the new drivers), and just OC it myself.
Unless of course, there is a killer deal on GHZ edition.