The X7 power supply series from Huntkey is comprised of three models: 800 W (80 Plus Bronze), 900 W (80 Plus Silver), and 1,200 W (80 Plus Gold). All of them have a modular cabling system and make use of an interleaved PFC circuit and phase-shift full-bridge switching design in the primary. Let's dissect the 900 W model, which has five +12 V rails.