Corsair RMi Series 850W Modular Power Supply

MX58650 RMi Series 850W Modular Power Supply
MX58650 RMi Series 850W Modular Power Supply MX58650 RMi Series 850W Modular Power Supply MX58650 RMi Series 850W Modular Power Supply MX58650 RMi Series 850W Modular Power Supply

Product Info

Premium Components, Great Performance, Very Low Noise Levels


featureCorsair RMi series power supplies are 80 PLUS Gold certified and give you extremely tight voltage regulation, virtually silent operation, and a fully modular cable set. With all Japanese 105°C capacitors, they're a great choice for high performance PCs where reliability is essential. Corsair Link Digital makes it easy to monitor power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop.

The Power of Corsair Link Digital


Monitor and log fan speed, voltages and power use with Corsair's advanced desktop app, as well as control fan speed and configure +12Vdc rail operation in real time.


  • 80PLUS Gold Certified:
    Gold certification ensures high efficiency operation for less excess heat and lower operating costs.
  • 100% Japanese 105° C Capacitors
    Premium internal components ensure solid power delivery and long term reliability
  • Zero RPM Fan Mode
    The superior energy efficiency of the RMi Series allows for the fan to remain off at low to medium loads for virtually silent operation. And when you're pushing it hard, the thermally controlled fan adjusts its speed to provide optimal cooling with minimal noise
  • Configurable +12Vdc Rail
    It's your choice; run it in the default multi-rail +12Vdc mode, or toggle to the single-rail mode
  • ZeroRPM mode for fanless operation at low loads and outstanding noise reduction
  • 135mm thermally controlled fluid dynamic bearing fan spins up as needed
  • Fully modular cables for easy installation, less clutter, and helps maximize airflow through your computer's chassis
  • Engineered to meet maximum power output at a server-grade 50° C temperature rating
  • Fan self-test switch to determine fan functionality even before installation.



Model RM850i Modular Power Supply
Part Number CP-9020083-NA
Input Voltage 100 ~ 264Vac
Input Frequency Range 47 ~ 63Hz
Maximum Current 100Vdc: 12A
Compliance 80 PLUS® Gold
Maximum Load
Voltage +3.3V +5V +12V -12V +5Vsb
Maximum Current 25A 25A 70.8A 0.8A 3A
Maximum Combined Wattage 150W 850W 9.6W 15W
Total Output 850W @ 50° C
Active PFC Yes, PF value of 0.99
Cooling 135mm Fan w/ Fluid Dynamic Bearing
Connectors 1x 24 (20 + 4) pin ATX Connector
2x 8 (4+4) pin 12V EPS Connector
6x 8 pin (6 + 2 pin) PCI-E Connectors
8x 4 Pin Molex™ Connectors
10x SATA Connectors
2x Floppy Drive Connectors
MTBF 100,000 Hours
Protection Over-Voltage protection
Under-Voltage protection
Short Circuit protection
Over Power protection
Over Temperature protection
Safety Approvals FCC, ICES, CE, UL / CUL, CSA, C-Tick/RCM, TUV, CB, CU, KC Mark, RoHS, WEEE, RoHS (China), REACH
Dimensions (LxWxH) 150 x 86 x 180mm (5.9 x 3.4 x 7.1")
Weight 1.98kg

Package Contents

  • RMi Series 850W Modular Power Supply
  • AC Power Cord
  • User Manual
  • Accessory Bag with:
    • Corsair DC Modular Cable Kit
    • Cable Ties
    • Corsair Link Digital Interface Cable
    • Corsair Link USB cable
    • Corsair Case Badge