I think i found the highest end GTX 970 on the market in the Zotac GeForce GTX 970 4GB AMP Extreme Core Edition GPU. Can this GPU potentially outperform the stock, non factory overclocked GTX 980? At $370 vs. $500 it is a very tempting buy. If it is or is not capable of outperforming a GTX 980, by how much? A little? A lot? Please let me know.