For my new build I am going with I am going with a SLi/CFX setup, gtx 660ti/670 sli. My question is for purely a gaming rig, and my previous experience with having an ssd for boot/os and games, and it was OK, not worth it right now I don't think honestly. Should I get what I was going to get GTX 670 FTW in SLi now and no SSD, or should I get GTX 660 ti SLi with 120/240GB SSD for boot/os/games?