Hey guys just wondering about something that has been bothering me a bit lately. I replace my ASUS P8p67 Pro mobo after it had some issues. I have an i7 2600 non k at stock speeds that was in that board. I replaced the board with an ASUS P8z77- v board and put my i7 2600 in there. After doing some reading I realize that the Sandy Bridge CPU's are limited to PCIe 2.0 so that alarmed me a bit because currently I am running a GTX 660 TI but want to go with GTX 780. People on the internet are claiming at stock speeds that 2600 will hold back a GTX 780 with 3.4 ghz sandy and PCIe 2.0. I am now wondering if I should replace the entire build with a Haswell 4770 build however I just feel like 2 years is way too fast for a $300 cpu to be crap. If thats the case I may as well stop pc gaming lol. Thanks for the advise guys!