With the HX620, Corsair has had a winning product for more than a year and they have once again shown that this product has every right to be at the very top of your list if you are in the market for a 600W to 700W power supply. Over the past year, the HX620 has only become more appealing with a reduced price and additions such as a pair of 8-pin PCI-E connectors. No matter which test we put it through, this unassuming power supply showed it is at the top of its game by besting every other power supply we have tested to date.