Hello! I am considering a new gaming build. I'm looking at an i7 Haswell and a GTX 650 Ti Boost videocard. I stopped at 650 ti Boost because the performance/value gets worse after that. I might consider doing sli in the future (I chose a mobo that supports it). Would I be safe with a 750W Corsair psu? The vg only consumes 140 max, so I thought a 750W would suffice even if I added a second one. My other concern is the case. I wanted to get this but it appears to be a mid-tower, so it's not the largest. How do I know if the vga will fit inside? Thank you!