01-17-2013, 08:10 PM
hardware combination looks good. you will not lose performance using a pci-e 3.0 card in a pci-e 2.0 slot, no. not for what we do, anyway. for the os, we officially recommend ubuntu 12.04 lts. check out https://hashcat.net/wiki/doku.php?id=linux_server_howto