Compared with the older versions, the 550W and 650W editions have a somewhat more modern design with ATX v2.4 support and support for the newest processor C-states. Both models can deliver their full nameplate wattage on the +12V line, and support 100W +3.3V and +5V.
The 550W model has two 6+2 pin PCIe power connectors, while the 650W model has a total of four.
The 650W comes with a few more Molex connectors than the 550W model. Both offer single 4+4 pin EPS, and eight SATA power, besides the obligatory 24-pin ATX.
Pricing and availability is unknown.
Via: TPU