CORSAIR RM Series Fully Modular Ultra-Low Noise Power Supplies with triple/dual EPS12V connectors deliver consistent 80 PLUS Gold efficient power to your PC.   Fully Modular Cables: Only connect the cables your system needs, making clean and tidy builds easier. Triple EPS12V Connectors: For full compatibility with modern graphics cards and motherboards. Tuned for Low-Noise Operation: A 140mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation 105°C-Rated Capacitors: Industrial-grade capacitors deliver solid electrical performance and reliability 80 PLUS Gold Certified: Up to 90 efficiency for lower power consumption, less noise, and cooler temperatures. Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency. Resonant LLC Topology with DC-to-DC Conversion: Provides clean, consistent power, reduces coil whine for quieter operation, and enables use of more energy efficient sleep states. Ten-Year Warranty: Your guarantee of reliable operation that will last across several system builds. CORSAIR RM Series Fully Modular Ultra-Low Noise Power Supplies deliver consistent 80 PLUS Gold efficient power to your PC. With triple/dual EPS12V cables and four PCIe 8-pin power connectors, RM PSUs have all the connections needed to power today’s most demanding PC upgrades. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with support for the Modern Standby sleep mode. Zero RPM fan mode ensures virtually silent operation at low and medium loads. Fully modular cables make PC builds and upgrades easy, as you connect only the cables your system requires. RM PSUs are quiet, efficient, and dependable to power your high-performance PC for years to come.   Specification Form Factor: ATX Modular: Fully Modular Series: Corsair RM Wattage: 850 W Connectors: 1 x 24-pin ATX (24-pin) 3 x ATX 12V/EPS12V (4 4-pin) 4 x PCIe (6 2) 14 x SATA (Straight) 4 x PATA AC Input: 100-240V Fan Type: 140mm fan with a specially calculated fan curve Fan Bearin Rifle Bearing Noise: Low-noise Zero RPM fan mode 80 Certification: 80 Gold Efficiency: Up to 90 Features:  None Weight/Dimensions: 1.7 kg 160 x 150 x 86 mm Package Weight: 3.1200 kg Warranty: 10 Years