MANUAL | QUICK START GUIDE

CORSAIR RMx SHIFT SERIES 2ND GENERATION

FULLY MODULAR ATX POWER SUPPLIES

RMx Shift 2025_Main_Visual

Congratulations on the purchase of your new CORSAIR power supply!

CORSAIR RMx SHIFT Series 2nd Gen provides accessible, efficient power with a native 12V-2x6 cable, side-mounted modular connectors, adjustable fan speed, Japanese capacitors, and a ten-year warranty.


SAFETY AND PROTECTION

OVER-VOLTAGE PROTECTION (OVP)

Over-voltage protection for the 12V, 5V, and 3.3V DC outputs is required to comply with the ATX specification. OVP shuts down the PSU in the event that the DC outputs exceed a set level, determined by the PSU manufacturer.

OVER-CURRENT PROTECTION (OCP)

OCP is featured on the 3.3V, 5V, and 12V rails. OCP ensures that the output of the DC voltage rails remains within safe operating limits.

OVER-TEMPERATURE PROTECTION (OTP)

OTP ensures that the PSU will shut down when the internal temperature reaches a set point. This is usually as a result of internal current overloading or a fan failure.

SHORT-CIRCUIT PROTECTION (SCP)

A short-circuit is defined as any output impedance of less than 0.1 ohms. Amongst other things, SCP ensures that the PSU shuts down should the 3.3V, 5V, and 12V rails short to any other rail, or to ground. It also ensures that no damage should occur to the unit, or your PC’s components in the event of a short.

OVER-POWER PROTECTION (OPP)

Over-power protection shuts off the PSU when the power drawn is between 115% and 135% of the rated power.


INCLUDED CABLES

Accessories_01_ATX_CABLE_24PIN

1x ATX Motherboard (24-pin) Cable
610mm (± 10mm)

Accessories_02_EPS_ATX12V_CABLE_8PIN_2x

2x ATX12V / EPS12V (4+4-pin) Cable
650mm (± 10mm)

8-pin PCIe (6+2-pin) cable lineart

2x 8-pin PCIe (6+2-pin) Cable
650mm (± 10mm)

90° 12V-2x6 to 2x 8-pin PCIe (6+2-pin) PSU cable

1x 90° 12V-2x6 to 2x 8-pin PCIe
(6+2-pin) Cable
650mm (± 10mm)

90° 12V-2x6 to 600W 12V-2x6 (12+4-pin) PSU cable

1x 90° 12V-2x6 to 600W 12V-2x6
(12+4-pin) Cable
650mm (± 10mm)

3SATA cable - QSG lineart

2x 3 SATA Cable
(3x with RM850x SHIFT)
(4x with RM1000x SHIFT)
700mm (± 10mm)

4 PATA Cable - QSG lineart

1x 4 PATA Cable
750mm (± 10mm)

Blank_frame.max-800x600

RM750x SHIFT 2ND GEN

Length 160mm
Width 150mm
Height 86mm
CORSAIR RM750x SHIFT 2ND GEN POWER TABLE MAX LOAD MAX OUTPUT
MODEL RPS0220 +3.3V 20A 120W
PART NO. 75–006526 +5V 20A
AC INPUT RATING 100V–240V a.c. +12V 62.5A 750W
INPUT CURRENT 10A–5A +5Vsb 3A 15W
FREQUENCY 47Hz–63Hz
TOTAL POWER: 750W

RM750x SHIFT 2ND GEN EFFICIENCY

RM750x SHIFT efficiency chart - QSG

RM750x SHIFT 2ND GEN FAN NOISE CURVE

RM750x SHIFT fan noise chart - QSG


RM850x SHIFT 2ND GEN

Length 160mm
Width 150mm
Height 86mm
CORSAIR RM850x SHIFT 2ND GEN POWER TABLE MAX LOAD MAX OUTPUT
MODEL RPS0221 +3.3V 20A 120W
PART NO. 75-006527 +5V 20A
AC INPUT RATING 100V–240V a.c. +12V 70.8A 850W
INPUT CURRENT 10A–5A +5Vsb 3A 15W
FREQUENCY 47Hz–63Hz
TOTAL POWER: 850W

RM850x SHIFT 2ND GEN EFFICIENCY

RM850x SHIFT efficiency chart - QSG

RM850x SHIFT 2ND GEN FAN NOISE CURVE

RM850x SHIFT fan noise chart - QSG


RM1000x SHIFT 2ND GEN

Length 160mm
Width 150mm
Height 86mm
CORSAIR RM1000x SHIFT 2ND GEN POWER TABLE MAX LOAD MAX OUTPUT
MODEL RPS0222 +3.3V 20A 120W
PART NO. 75-006528 +5V 20A
AC INPUT RATING 100V–240V a.c. +12V 83.3A 1000W
INPUT CURRENT 12A–6A +5Vsb 3A 15W
FREQUENCY 47Hz–63Hz
TOTAL POWER: 1000W

RM1000x SHIFT 2ND GEN EFFICIENCY

RM1000x SHIFT efficiency chart - QSG

RM1000x SHIFT 2ND GEN FAN NOISE CURVE

RM1000x SHIFT fan noise chart - QSG

FAN SPEED KNOB

Use this knob to override the Zero RPM mode and adjust the minimum starting fan speed.

NOTE: If PSU temperatures require greater airflow, the PSU's fan controller will override the knob's setting as needed. Learn more about the fan control knob.

RMx SHIFT 2nd GEN Series PSU knob - QSG visual

INSTALLING YOUR NEW RMx SHIFT SERIES 2ND GEN POWER SUPPLY

STEP 1: REMOVING YOUR EXISTING POWER SUPPLY

WARNING: To ensure proper function, only use the DC cables included with your new PSU, unless your old cables are genuine CORSAIR cables of the same type. Please confirm your existing cables’ type before using them! The RMx SHIFT series uses Type-5 cables.

If you are building a new system, skip to Step 2.

  • Disconnect the AC power cord from your wall outlet or UPS and from the existing power supply.
  • Disconnect all the power cables from your video card, motherboard and all other peripherals.
  • Follow the directions in your chassis manual and uninstall your existing PSU.
  • Proceed to Step 2.
WARNING: Please check your case compatibility before installing the RMx SHIFT power supply. The PSU and cables will fit in any PC case that supports ATX format and is at least 210mm (8.3") wide. RMx SHIFT must also be accessible from the side when mounted in the case, and will fit in any CORSAIR ATX case while non-CORSAIR cases require 30mm of clearance from the PSU connectors to the side panel.

STEP 2: INSTALLING THE NEW POWER SUPPLY

  • Make sure the power supply’s AC power cable is not connected.
  • Follow the directions in your chassis manual and install the power supply with the screws provided.
  • Connect the 24-pin (ATX12V) cable to the motherboard.
  • Connect the 4+4-pin +12V (EPS12V) cable to the motherboard's EPS socket:
Type5 PSU 8-pin connector - QSG
8-pin EPS PSU cable - QSG

Connect the 8-pin end to the PSU.

If your motherboard has an 8-pin EPS socket, connect the 4+4-pin EPS12V cable directly to your motherboard.

4-pin EPS PSU cable - QSG
8+4-pin EPS PSU cable - QSG

If your motherboard has a 4-pin EPS socket, detach the 4-pin from the 4+4-pin EPS12V cable, and then plug this 4-pin cable directly to your motherboard.

Some motherboards will require a mix of 8+4 pins, use as many EPS12V cables as necessary and do not mistake them for PCIe cables.

  • Connect the peripheral cables to any peripherals requiring a 4-pin connector.
6-pin Type5 PSU connector
Peripheral 4-pin connector

Connect the 6-pin end to the PSU.

Connect the 4-pin end to the device.

  • Connect the SATA cables to your SATA SSD or hard drives.
6-pin Type5 PSU connector
SATA connector

Connect the 6-pin end to the PSU.

Connect the SATA connector to the device.

  • Connect the PCIe cables to the power connector of your PCIe devices:
Type5 PSU 8-pin connector - QSG
PCIe PSU 8-pin (6+2) connector - QSG

Connect the 8-pin end to the PSU.

Connect the 8-pin (6+2-pin) connector to your device. If your device uses a 6-pin connector, detach the 2-pin segment from the 6+2 connector and connect only the 6-pin portion.

GPUs with 8-pin or 6-pin power sockets

  • Connect the 12V-2x6 to dual 8-pin PCIe cable to your GPU:
12V PCIe cable - PSU side - QSG
2x PCIe 8-pin (6+2) cable - QSG

Connect the 90° 12V-2x6-pin end to the PSU.

Connect the 8-pin (6+2-pin) connector to your GPU. If your GPU uses a 6-pin connector, detach the 2-pin segment from the 6+2 connector and connect only the 6-pin portion.

WARNING: Reversing the connection may cause damage.

GPUs with 12-pin (2x6-pin) power sockets

  • Connect the 90° 12V-2x6 to 600W 12V-2x6 (12+4-pin) cable to your GPU:
12V PCIe cable - PSU side - QSG
12V-2x6_Device_Side PSU Connector

Connect the 90° 12V-2x6-pin end to the PSU.

Connect the straight 12V-2x6-pin end to the GPU.

IMPORTANT: Make sure all the cables are tightly connected. Save any unused modular cables for future component additions.

CONNECTING TO POWER

Connect the AC power cord to the PSU and turn it on by pushing the switch to the ON position (marked with “I”).


WARRANTY

Warranty_10

CORSAIR RMx SHIFT Series 2nd Gen PSUs have a 10-year warranty.


LEGAL

© 2025 CORSAIR MEMORY, Inc. All rights reserved. CORSAIR and the sails logo are registered trademarks of CORSAIR in the United States and/or other countries. All other trademarks are the property of their respective owners. Product may vary slightly from those pictured.