MANUAL | QUICK START GUIDE
CORSAIR CX-M SERIES (3rd GEN)
SEMI-MODULAR ATX POWER SUPPLIES
Congratulations on the purchase of your CORSAIR CX-M Series ATX power supply!
CX-M Series Power Supplies are ATX 3.1 compliant and PCIe 5.1 ready for reliable, quiet power delivery with a 12V-2x6 cable to power the latest graphics cards.
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
1x Fixed ATX Motherboard 24-pin
600mm (± 10mm)
1x Fixed Dual ATX12V / EPS12V
(8-pin / 4+4-pin)
600mm (± 10mm)
1x Fixed Dual 8-pin PCIe (6+2-pin)
600mm (± 10mm)
1x Modular Dual 8-pin PCIe (6+2-pin)
600mm (± 10mm)
1x Modular 450W / 600W 12V-2x6 (12+4-pin)*
600mm (± 10mm)
1x Modular SATA (3 SATA)
600mm (± 10mm)
1x Fixed SATA (3 SATA)
600mm (± 10mm)
1x Modular 2 SATA / 1 PATA
650mm (± 10mm)
* CX650M: 450W / CX750M: 600W
CX650M
|
Height |
86mm |
|
Width |
150mm |
|
Length |
140mm |
| CORSAIR CX650M POWER TABLE | MAX LOAD | MAX OUTPUT | |||
| MODEL | RPS0228 | +3.3V | 20A | 130W | |
| PART NO. | 75-006837 | +5V | 20A | ||
| AC INPUT RATING |
100V - 240V a.c. |
+12V | 54.2A | 650W | |
| INPUT CURRENT |
10A - 5A |
+5Vsb | 3A | 15W | |
| FREQUENCY | 47Hz - 63Hz | ||||
| TOTAL POWER: 650W | |||||
CX650M EFFICIENCY
CX650M FAN NOISE CURVE
CX750M
|
Height |
86mm |
|
Width |
150mm |
|
Length |
140mm |
| CORSAIR CX750M POWER TABLE | MAX LOAD | MAX OUTPUT | |||
| MODEL | RPS0229 | +3.3V | 20A | 130W | |
| PART NO. | 75-006838 | +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 | |||||
CX750M EFFICIENCY
CX750M FAN NOISE CURVE
INSTALLING THE CX-M POWER SUPPLY
STEP 1: REMOVING YOUR EXISTING POWER SUPPLY
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.
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 ATX Motherboard 24-pin cable and the ATX12V / EPS12V (4+4-pin) cable to the motherboard.
If your motherboard has an eight-pin +12V socket, connect the ATX12V / EPS12V (4+4-pin) cable directly to your motherboard.
If your motherboard has a four-pin +12V socket, detach the four-pin from the ATX12V / EPS12V (4+4-pin) cable, and then plug the cable directly to your motherboard.
Some motherboards will require a mix of 8+4-pins, use as many ATX12V / EPS12V (4+4-pin) connectors as necessary and do not mistake them for PCIe cables.
- Connect the peripheral cables, PCI-Express cables, and SATA cables.
- Connect the SATA cables to your SATA SSD or hard drive’s power sockets.
- Connect the PCIe cables (or the 12V-2x6 (12+4-pin) cable) to the power connector of your GPU.
- Connect the PATA connector to any peripherals requiring a 4-pin connector.
- Connect the 6-pin portion of the Dual 8-pin PCIe (6+2-pin) cable to the iCUE LINK System Hub if you have one.
- Make sure all the cables are tightly connected. Be sure to save any unused modular cables for future component additions.
- Connect each modular cable to the appropriate port on the PSU, ensuring it matches the labeled slot.
- Connect the AC power cord to the power supply and turn it on by pushing the switch to the ON position (marked with “I”).
WARRANTY
CORSAIR CX-M Series (3rd GEN) PSUs have a 7-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.