The Seasonic Platinum 1050 and Platinum 1200 power supplies are rated for a combined, continuous output power of up to 1050 watts and 1200 watts respectively (up to 50°C). Both power supplies come with all modular cables. Each PSU includes universal AC line input (automatically adjusts to the AC line voltage) and active PFC, which makes the units more environmentally friendly to the local power grid. Both power supplies feature a single +12V rail that can deliver up to 87A/1044W (Platinum 1050) and 100A/1200W (Platinum 1200) of power. And both power supplies are ErP Lot 6 2013 compliant along with being Intel Haswell processor ready.
Specifications from the Seasonic web site:
Seasonic Platinum 1050
Seasonic Platinum 1200
Safety Certifications for both PSUs
Dimensions for both PSUs: 190 x 150 x 86mm (D x W x H)