I think it will. Any builder knows that a PSU really shouldn't be running at more than 80% of full load continuously, which in this case is 80% of 1500 watts (1200 watts). Assuming they stick to this, power won't be a problem.
Says who? Rated power is rated power. "50% rule", "80% rule" are pure nonsense. People need to stop babying their power supply. Run it at full power. If it is solid (Seasonic) it will run for years at 100% load. If it is a piece of shit well then RMA it, and break it again, and RMA it, and break it again, and RMA it, and break it again and RMA it. Post of forums that it is a piece of shit, give it 1 egg on newegg, make a blog about how company xyz rips off customers.
Rated power is rated power. If a PSU can't put out more than 1000W CONTINUALLY then it should be rated at 1000W not 1200W. Consumers that baby the suppliers only subsidize substandard products.
I mean it would be like someone selling you a sports car which has a top speed of 160 mph but if you drive it faster than 80 mph it explodes and people say "dude everyone knows not to drive a sports car faster than 50% of rated speed). It is just as foolish to hold PSU to the same low standard.
Semi offtopic rant aside, the listed spec for RigBox is ~2500W so a 50% unit would likely be ~1250W.
