The CORSAIR RM1200e Fully Modular Low-Noise Power Supply provides quiet, reliable power with 80 PLUS Gold efficiency to your PC. Compliant with the ATX 3.1 power standard from Intel, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated 100% Japanese Electrolytic capacitors deliver superb electrical performance, backed by a ten-year warranty. Wake your computer faster and consume less power with support for the new Modern Standby sleep mode. Fully modular cables make PC builds easy, as you connect only the cables your system requires. With a more compact 150mm casing, you get more room for your cables to fit comfortably in any power supply compartment.
Q: Is this power supply fully modular?
A: Yes, the CORSAIR RM1200e is a fully modular power supply.
Q: How much power can this PSU deliver?
A: The RM1200e power supply can deliver 1200 watts of power.
Q: Does the fan always run in this power supply?
A: No, the fan has a Zero RPM Fan Mode for near-silent operation at lower loads.
Q: What is the efficiency rating of this power supply?
A: The CORSAIR RM1200e is 80 PLUS Gold-Certified for up to 90% efficiency and also Cybenetics Platinum certified.
Q: What is the warranty period for this power supply?
A: This power supply comes with a 10-year warranty for both parts and labor.
Q: Does this PSU support Modern Standby?
A: Yes, the RM1200e is compatible with the Modern Standby sleep mode for faster wake times and better low-load efficiency.
Q: What kind of fan does this PSU use?
A: It uses a 140mm rifle bearing fan with a specially calculated fan curve to minimize noise.

The CORSAIR RM1200e Fully Modular Low-Noise Power Supply provides quiet, reliable power with 80 PLUS Gold efficiency to your PC. Compliant with the ATX 3.1 power standard from Intel, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated 100% Japanese Electrolytic capacitors deliver superb electrical performance, backed by a ten-year warranty. Wake your computer faster and consume less power with support for the new Modern Standby sleep mode. Fully modular cables make PC builds easy, as you connect only the cables your system requires. With a more compact 150mm casing, you get more room for your cables to fit comfortably in any power supply compartment.

CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty, RMx PSUs are the gold standard for many years to come.

CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.

The new NZXT Gold PSUs offer improved performance, adhering to Intel ATX 3.1 standards for modern GPUs and power stability. Redesigned with superior components, increased fan airflow, and a longer chassis, they deliver higher efficiency, enhanced reliability, and reduced noise.
| Pros for CORSAIR - RMe Series RM1200e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.0 Power Supply - Black | |||
|---|---|---|---|
| Overall Performance, Power Supply, Noise Level, Ease of Use | Overall Performance, Noise Level, Cable Management, Power Capacity, Fan Control | Power Supply, Cable Management, Noise Level, Overall Performance, Ease of use | There were no pros for this product— |
| Cons for CORSAIR - RMe Series RM1200e 80 PLUS Gold Fully Modular Low-Noise ATX 3.1 and PCIE 5.0 Power Supply - Black | |||
| There were no cons for this product— | Coil Whine | There were no cons for this product— | There were no cons for this product— |
Customers frequently mention the excellent overall performance of the RMe Series RM1200e power supply, citing its flawless operation and compatibility with high-end components like the 4090 and 50 series graphics cards. Its ample power capacity is also a highlight, with users confirming its ability to effortlessly power their high-performance systems. No significant drawbacks were reported by customers. The power supply is praised for its reliable functionality and ability to meet the demands of modern, power-hungry hardware.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
I’m loving this power supply, stays cool, has no coil winding and powers everything perfectly
Posted by TreverM
This PSU was exactly what I needed for my small form factor build. It’s quiet, runs cool, and has enough power for my high-performance components. The fully modular design made cable management a breeze, and installation was straightforward. Been running it for a couple of months with no issues at all. Would definitely buy again and recommend to others!
Posted by SusannaD
Worked great out of the box. No issues, easy to set up and powered everything I needed it to. Plus I got it on sale!
Posted by MitchM