Powerful was poor word choice. I meant that it has more slots and space. Also, I don't need an mATX, I have over 30 inches of space for height. This is the power supply. It's semi-modular, is that okay? Thanks for telling me about software swap, there are some great deals on there.
I know I've asked this many times, but what do you guys think about the GTX 780 Lightning? Is it a waste? I could get the EVGA Classified for $10 more (which will only give me 4-5 extra frames at 1440p) or Twin Frozr for $50 less (which will cause a loss of basically up to 10 frames, which can be a big deal at 1440p).
How is this build? Someone from Tom's Hardware recommended it to me. It's much cheaper than my current build, but how much performance and quality will I be sacrificing?
Semi-modular is better. 780 Lightning vs Classy vs Twin Frozr comes down to factory overclock aka guaranteed *slightly* better chip. All will most likely overclock to the same performance. ~$1700 and H87 w/ Xeon is stupid. Take your build drop down to a 4650K unless you are doing multimedia creation. Also don't need a $17 case fan. The fractal fans included will be sufficient. You also can drop down to a good 500W+ PSU (look at OP for suggestions) unless you intend to add another 780 which I wouldn't recommend unless you were buying two right now. Always better to sell and buy new single GPU then SLI down the road.