hello i just recently purchased a computer, i bought a barebones kit from tiger direct. it came with this mobo GIGABYTE GA-Z77-DS3H Intel 7 Series Motherboard its crossfire ready which really bums me out. i also purchased a nvidia geforce 560. ive been trying to play the new dx11 games so im wondering if i should upgrade to the geforce gtx 670 or just buy a new mobo thats sli compatible and another 560 for sli. would it be worth it?? im already familiar with the parts needed to sli i have all that covered, so any suggestions anyone?? the reason im asking is because im a gamer on a budget lol