Aren't Corsair's from Seasonic?
Corsair currently uses three OEMs.
CWT (Channel Well Technology), Flextronics and Seasonic.
The CMPSU-1200AX 1200 Watt PSU is the only model made by Flextronics.
The new Enthusiast TX series hybrid modular models CMPSU-550TXM, CMPSU-650TXM, CMPSU-750TXM and CMPSU-850TXM are all made by CWT and are just now appearing in the marketplace.