MANUAL | QUICK START GUIDE
CORSAIR RM1200e 2nd GENERATION
ATX 3.1 Fully Modular Low-Noise ATX Power Supply
CORSAIR RM1200e Fully Modular Low-Noise ATX Power Supply
The CORSAIR RM1200e offers 1200W for high-end builds, PinProtect over current protection (OCP) and a 3D-Y fan grill for excellent cooling and low-noise operation.
SAFETY AND PROTECTION
PINPROTECT 12V-2x6 OVER CURRENT PROTECTION (OCP)
The power supply monitors the current on each pin of the 12V-2x6 connection in real-time and reduces GPU power if the current exceeds preset thresholds, which causes the GPU to turn off to prevent potential damage.
When the protection is triggered, you will notice your screen becomes black and the fan spins at full speed. Please power down your PC, turn off AC switch. Check and re-seat your GPU power connector properly before powering up your system again.
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.
NO-LOAD OPERATION (NLO)
NLO ensures that the PSU can operate safely and remain stable even when little or no load is applied to its DC outputs.
SURGE AND INRUSH PROTECTION (SIP)
SIP protects the PSU and connected components against sudden voltage surges and limits excessive inrush current when the PSU is first switched on.
INCLUDED CABLES
1x ATX Motherboard 24-pin
610mm (± 10mm)
2x ATX12V / EPS12V (4+4-pin)
750mm (± 10mm)
3x 8-pin PCIe (6+2-pin)
650mm (± 10mm)
1x 600W 12V-2x6 (12+4-pin)
650mm (± 10mm)
1x 12V-2x6 to 2x8-pin PCIe(6+2-pin)
650mm (± 10mm)
2x 4 SATA
750mm (± 10mm)
1x 2 SATA / 2 PATA
750mm (± 10mm)
SPECIFICATIONS AND POWER TABLE
| Length | 150mm |
| Width | 150mm |
| Height | 86mm |
| CORSAIR RM1200e 2ND GEN POWER TABLE | MAX LOAD | MAX OUTPUT | ||||
| MODEL | RPS0254 | +3.3V | 20A | 150W | ||
| PART NO. | 75-007013(Black) 75-007014(White) |
+5V | 20A | |||
| AC INPUT RATING |
100V-240V a.c
(不适用中国)
|
200V-240V a.c
(适用中国、Only for China & Korea)
|
+12V | 100A | 1200W | |
| INPUT CURRENT | 15A-7.5A | 10A | +5Vsb | 3A | 15W | |
| FREQUENCY | 47Hz–63Hz | |||||
| TOTAL POWER: 1200W | ||||||
EFFICIENCY AND NOISE CHART
RM1200e Gen2 EFFICIENCY
RM1200e Gen2 FAN NOISE
INSTALLING YOUR RM1200e 2nd Gen 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 24-pin motherboard cable to motherboard, by plugging in 10 and 18-pin end of the cable to PSU, 24-pin end to the motherboard.
- Connect 4+4-pin +12V(EPS12V) cable to the motherboard's EPS socket:
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.
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 cable with peripheral connector to any peripherals requiring a 4-pin connector.
Connect the 6-pin end to the PSU.
Connect the 4-pin end to the device.
- Connect the cable with SATA connector to devices requiring SATA power connectors
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:
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:
Connect the straight 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.
GPUs with 12V-2x6 power sockets
- Connect the 600W 12V-2x6 (12+4-pin) cable to your GPU:
Connect the straight 12V-2x6-pin end to the PSU.
Connect the straight 12V-2x6-pin end to the GPU.
Dual-tune 12V-2x6 Connector
The RM1200e includes a 12V-2x6 GPU power cable with dual-tone connectors. This dual-tone design features grey tips on the ends of the cable to give you visual confirmation the cable is fully inserted. For proper installation of the cable, insert each end into the PSU/GPU until you feel it click into the retention mechanism, and inspect each end of the cable to make sure there is no grey portion of the connectors visible. If you can still see any grey on the end of the cable after you've connected both ends, remove the cable and reinsert it until there is no grey visible on either end of the connection.
CONNECTING TO POWER
Connect the AC power cord to the PSU and turn it on by pushing the switch to ON position ( marked with "I").
WARRANTY
CORSAIR RM1200e 2nd Gen PSUs have a 10-year warranty
LEGAL
© 2026 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.