Looks like you're a bit over the $1000 mark this time. Why not 120GB SSD, I wonder?
The
EVGA 600 B $60 ($40 AR) is a good cheaper alternative for a single 770 setup.
At an equal price to the TX650, the
EVGA NEX650G $90 ($70 AR) is better. It has Gold efficiency and 10 year warranty. Sure, the Corsair is a Seasonic, but the EVGA unit is stable and built with high quality parts nevertheless... and value-wise, you can't argue with 10-year transferable warranty.
And for dual 770's (which the motherboard supports), you'll want 750W, not 650W:
Antec TP-750C 80+Gold $110 ($90 AR; -$20 promo active through 12/9). A cheaper alternative:
EVGA 750 B $85 ($55 AR), has 5 year transferable warranty.