Hey guys, I have a few questions... I've been looking into upgrading to a GTX 970 G1 from my old GTX 580. I was about 1 minute from buying one until I read the GTX 1070 is coming out on the 10th! I looked around but couldn't find the cost of the 1070. How much more will it be than the 970? I'm also on an older mobo (P8Z68-v PRO) with PCIe 2.0. Will this cause any problems? Will a 2600k @ 4.5ghz bottleneck the card?