Let's take a look at the most entry-level model within the Corsair GS power supply series, which comes with the standard 80 Plus certification.

Here is a snippet: "The Corsair GS power supply series is comprised of 500 W, 600 W, 700 W, and 800 W models, with either the standard 80 Plus certification or with the 80 Plus Bronze certification, except for the 500 W model, which is available only with the standard 80 Plus certification. Let's see if it is a good product."



Link: hardwaresecrets