Let's take a look at the latest 650 W power supply with the 80 Plus Bronze certification from NZXT.

Here is a snippet: "NZXT is releasing today a new power supply series, the HALE82 N, comprised of three models: 550 W, 650 W, and 750 W - all with the 80 Plus Bronze certification. The main external difference between the "N" and the regular HALE82 series is that the "N" line-up doesn't have a modular cabling system. Internally, the original HALE82 uses a DC-DC design in its secondary, while the "N" version uses a regular design with Schottky rectifiers, which result in it costing less than the original HALE82."



Link: Hardwaresecrets