I am thinking of buying this motherboard, http://www.amazon.co.uk/P8H77-V-Motherboard-Socket-Support-Express/dp/B007KZQEQC/ref=sr_1_3?s=computers&ie=UTF8&qid=1381607371&sr=1-3&keywords=motherboard+socket+1155, and I am wondering if it will be any good. I would like to SLI GTX 660s with it and am wondering if it having 1 PCI-e 3 and 1 PCI-e 2 will make much difference. Thanks.