Seasonic G-Series 550W PSU review: affordable Gold power supply

Compared to other 43 500-700 watt PSUs



80 Plus Gold power supplies are known for not being the most affordable, particularly if they have a sticker with the name Seasonic on them. Their new G series are supposed to be more affordable, and Hardware.Info tested the Seasonic G-series 550W.

That PSU is currently available for £80, making it one of the more affordable 80Plus Gold power supplies which you can see here. The distributor informed us they are planning to make it even more affordable, which truly would make this a great bargain.

Seasonic G-Series 550W

The Seasonic G-series 550W power supply has a single 12V rail with a maximum capacity of 45A. That means that the power supply can supply almost its full capacity (540 watts) on the important  12V rail. It's a modular PSU with 5x molex, 6x Serial ATA and 2x 6/8-pin PEG connectors. The motherboard cable is nicely sleeved, but the others are just plain black so they also look fine. The power supply has a single 12 cm fan, the speed of which depends on the load. It's not a semi-passive PSU.

Its dimensions are modest with a depth of 16cm. The 1.8 kg PSU comes with a 5-year factory warranty.

Seasonic G-Series 550W

Product discussed in this review

  Product Lowest price

Seasonic G-Series 550W

550 W, 90 %, 80 Plus Gold, Modular, 45 A

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