Im building a high end gaming rig. intel, gtx 590, from what I've read so far I should be going for a z77 board, but Im not sure which model would be the best choice. When I was researching last year I recall some boards offered 8x8 PCI lanes? and some offered 16x16? I apologize if my terminalology is incorrect here. Im not concerned with cost too much, I just want to make sure the board is somewhat future proof in regards to expandability going forward and will give me the best preformance