This makes me extremely nervous
Combined +12V Rating 432 Watts (36A)
Which makes me think it has multiple 12v rails, most likely two 18A, and with a much smaller possible combined 12v output than the rated maximum, only 86.4%, that's a sign of a cheapo unit. That, and they only shipped it with Intel Integrated graphics, which I'm sure you disabled, when it was described as having been "Designed for the ultimate in performance gaming, digital content creation, and picture/video editing..."
AMD FX-8350 w/ Corsair H105, ASUS Sabertooth 990FX Gen3/R2, 8GiB G.SKILL DDR3-2133, XFX HD 7970 GHz Edition, 1TB Samsung 850 Evo, 256GB OCZ Vector, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, Corsair C70, HP ZR2440w, Win 7 Ult Ed x64