Specifications

As has already been mentioned, the 650 GS is 80 PLUS Gold certified and uses a fully modular cabling design. It is also Haswell ready and can deliver its full power continuously at up to 50°C ambient. Its protection features include everything but OCP, which isn't a must in a single +12V rail PSU, and OTP (Over Temperature Protection), which is essential. Given this unit features a semi-passive operation you can disengage, we did expect Seasonic to include OTP should users prefer to have it operate with the fan constantly engaged.

A rather small nano-steel bearing fan keeps this PSU cool. Small, we believe it will definitely make its presence felt once the load picks up. As you can see in the table above, the 650 GS is quite small, so it will easily fit inside a small chassis. Moreover, the warranty period is rather long at five years; however, EVGA's corresponding 650 W G2 model comes with an even longer warranty of seven year. The price looks decent considering the product's features.


Capable of delivering up to 54 A, the +12V rail is pretty strong. The minor rails look weak, but 100 W maximum combined power output on these rails will suffice for a system a mid-capacity PSU like this one can power. We would like to see a slightly stronger 5VSB rail with at least 3 A maximum current output, though.

Cables & Connectors, Power Distribution

EVGA equipped this PSU with lots of connectors, including four PCIe connectors that are available at the same time, alongside two EPS connectors. You'd even have up to three EPS connectors available at the same time if two PCIe connectors cover your needs! This is one of the very few 650 W PSUs with two EPS cables featuring three connectors. Cable length is satisfactory with our only objection being the relatively small distance between the 4-pin peripheral connectors. These should ideally be 13-15 cm long. Finally, all connectors use 18AWG gauges, which is as the ATX spec recommends.

Since this PSU only features a single +12V rail, we do not have anything to comment on about its power distribution.