Corsair HX850 Full Modular 80 Plus Platinum Power Supply 850W. Fully modular cabling, so you only have to connect the cables that your system needs. Triple EPS12V connectors for full compatibility with modern graphics cards and motherboards. A 140mm fluid dynamic bearing fan with a specially calculated fan curve ensures minimum fan noise and efficient, effective cooling, even at full load. Zero RPM fan mode for near-silent operation at low to medium loads. 100% Industrial-grade, 105°C rated Japanese capacitors ensure unwavering power and reliability. 80 PLUS Platinum certified for up to 92% efficiency, for exceptionally low power consumption, less noise, and cooler temperatures. Supports Modern Standby sleep mode for extremely fast wake-from-sleep times and better low-load efficiency. Fully digital platform resonant LLC topology with DC-to-DC conversion provides clean, consistent power, reduces coil whine for quieteroperation, and enables use of more energy efficient sleep states.