If you have the cash, Sell 2500k+P8z68 and get the Z77 version and 3570k. If not, theres not much of a reason to. The PCI-e 2.0 VS PCI-e 3.0 isnt much of a difference, so performance loss will be at a minimum. Your rig would run smooth as butter and kick all butt. I wouldnt use any auto-OC. They always use too much Voltage.
Alright thanks, hmm, aparently the GTX 690 doesn't even use the full bandwidth of a PCI-e 2.0. And compared to the PCI-e 3.0 it has between 0-4% more performance (which isn't really noticeable). So i think i will keep my rig like this with a GTX 690 and maybe within a few months get a X79 platform with a SB-E??
Would it be worth it?
From i5 2500k + P8Z68-V PRO/GEN3 ----> (to) i7 3930K + P9X79 (didn't choose the exact one yet).
I only game, and i don't do any kind of editing whatsoever.