Corsair RM850i 850W ATX Black power supply unit - (CP-9020083-NA) only $203.93

MFG Part #: CP-9020083-NA | WEB ID: 773893
Corsair RM850i, 850 W, 100 - 240, 935 W, 47 - 63, 6 - 12, Active
850 Watt 80 PLUS Gold Certified Fully Modular PSU

Out of Stock

Regular Price: $225.30

Sale Price $203.93

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Customer Testimonials
Top notch, very fast shipping, excellent service
Carmine G, Calgary, Alberta

Product Description

Corsair RM850i. Total power: 850 W, AC input voltage: 100 - 240, Peak power: 935 W. Fan diameter: 13.5 cm, Number of fans: 1 fan(s), Fan location: Top. Motherboard power connector: 20+4 pin ATX, Cabling type: Modular. Purpose: PC, Power supply unit (PSU) form factor: ATX, Noise level (quiet mode, 50%): 12.4 dB. Colour of product: Black
Premium components for great performance with very low noise

Corsair 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.

80 PLUS 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 +12V rail

It’s your choice – run it in the default multi-rail +12V mode, or toggle single-rail operation.

The power of Corsair Link Digital

Our advanced desktop application lets you monitor and log fan speed, voltages and power consumption, as well as control fan speed and configure +12V rail operation.
7 years

Technical Information

Technical Information

Ports & interfaces

Motherboard power connector20+4 pin ATX
Number of SATA power connectors10
Number of PATA power connectors8
EPS power connector (8-pin)Y
PCI Express power connectors (6+2 pin)6
CPU power connector (4+4 pin)Y
Floppy drive power connector2
Floppy disk drive connectorY
Cabling typeModular
Monitor outletN

Weight & dimensions

Width5.91 "
Depth7.09 "
Height3.39 "
Weight0.9 lbs


Total power850 W
AC input voltage100 - 240 V
Peak power935 W
AC input frequency47 - 63 Hz
Input current6 - 12 A
Power factor0.99
Power Factor Correction (PFC) typeActive
Combined power (+3.3V)150 W
Combined power (+12V)850 W
Combined power (+5V)150 W
Combined power (-12V)9.6 W
Combined power (+5Vsb)15 W
Max output current (+3.3V)25 A
Max output current (+12V)70.8 A
Max output current (+5V)25 A
Max output current (-12V)0.8 A
Max output current (+5Vsb)3 A
Hold time16 ms
Efficiency91 %
Power protection featuresOver current, Over power, Over voltage, Short circuit, Under voltage

Operational conditions

Operating temperature (T-T)0 - 50 °C


80 PLUS certification80 PLUS Gold
Energy Star certifiedY
RoHS complianceY
CertificationFCC, ICES, CE, UL / CUL, CSA, C-Tick/RCM, TUV, CB, CU, KC Mark, WEEE, REACH

Packaging content



Fan diameter5.31 "
Number of fans1 fan(s)
Fan locationTop
Fan speed1060 RPM
Cooling typeActive


Colour of productBlack


Power supply unit (PSU) form factorATX
ATX version2.4
EPS version2.92
Noise level (quiet mode, 50%)12.4 dB
Noise level (full-load mode, 100%)23 dB
Mean time between failures (MTBF)100000 h


All products are protected by the Manufacturer’s warranty, unless otherwise specified. NCDS Canada guarantees that the products shipped to you are free of any defects; should your product be deemed defective we will happily exchange the item. If the item is no longer available, we will issue you a refund. Refurbished Products have a 30 day limited warranty, unless otherwise specified. For more information about product warranties, please see our Warranty Policy.