Japanese PC hardware maker Dirac launched its Tesla Cube line of high-wattage PSUs in the SFX form-factor. The series includes 550W and 650W models, which should splash your build with enough juice to run single high-end or two performance-segment graphics cards. The two feature single +12V rail designs, efficiency that meets 80 Plus Gold standards, and a fully modular cabling design. The two also come with adapters that let you install them on standard ATX cases. Cables for both models include 24-pin ATX, 4+4 pin EPS, two 6+2 pin PCIe, six SATA, and one Berg. The 650W Tesla Cube displaces Silverstone's SX600-G in being the most powerful SFX power supply. Silverstone's unit was showed off at Computex 2014, and is headed for launch later this month.