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Rectangular ATX power supply unit in matte black finish with a 120 mm fan grille on one side

Corsair

Corsair RM1200e CP-9020258-NA 1200 W power supply

SKU CH-MN0M-8C35N MPN CP-9020258-NA

A 1200 W fully modular ATX 3.1 power supply with 80 PLUS Gold efficiency, a 120 mm rifle bearing fan, 105 °C Japanese capacitors and a native PCIe 5.0 connector

  • TypeATX 3.0 Compatible / ATX 3.1 Compatible
  • Maximum Power1200 W
  • Fans1 x 120 mm rifle bearing fan
  • Max PSU Length150 mm
  • ModularFull Modular
  • Energy-Efficient80 PLUS GOLD Certified

Options RMe Series (1200W) Black

  • Fully modular cabling keeps builds tidy by using only needed cables
  • 1200 W output with 80 PLUS Gold certification delivers efficient power
  • ATX 3.1 compliance and PCIe 5.0 connector support modern graphics cards
  • 120 mm rifle bearing fan and 105 °C capacitors enable quiet, reliable operation
  • 100 % Japanese electrolytic capacitors provide long-term durability

ATX 3.1 compliant 1200 W power supply

The Corsair RM1200e CP-9020258-NA is a fully modular ATX power supply rated at 1200 W. It carries 80 PLUS Gold certification and supports the ATX 3.0 and 3.1 power standards. A 120 mm rifle bearing fan provides cooling. The unit measures 150 mm in length.

Suits high-output builds needing ATX 3.1

This unit fits systems that require a 12 V 100 A rail and a 12VHPWR connector for modern graphics cards. Builds with lower total power draw or cases that cannot accommodate a 150 mm deep supply should consider a smaller model.

Single 12 V rail rated at 100 A

The +12 V rail delivers up to 100 A, which determines whether the supply can handle the combined load of CPU and graphics card. If your components demand more 12 V current than this rating, the unit will not be sufficient.

Highlights

  • Fully modular cabling keeps builds tidy by using only needed cables
  • 1200 W output with 80 PLUS Gold certification delivers efficient power
  • ATX 3.1 compliance and PCIe 5.0 connector support modern graphics cards
  • 120 mm rifle bearing fan and 105 °C capacitors enable quiet, reliable operation
  • 100 % Japanese electrolytic capacitors provide long-term durability

Specifications

BrandCORSAIR
SeriesRMe
ModelCORSAIR RM1200e
Part NumberCP-9020258-NA
TypeATX 3.0 Compatible / ATX 3.1 Compatible
Maximum Power1200 W
Fans1 x 120 mm rifle bearing fan
Max PSU Length150 mm
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
Input Voltage100V a.c.-240V a.c
200V a.c.-240V a.c.(Only For China & India)
Input Frequency Range47 - 63 Hz
Input Current15A-7.5A
Output+3.3V@20A, +5V@20A, +12V@100A, +5VSB@3A
Connectors1 x Modular ATX Cable (24-PIN) (24)
2 x Modular EPS/ATX12V Cable (8-PIN) (4+4)
2 x Modular PCIe Cable (8-PIN) (6+2)
1 x Modular PCIe 5.0 (16-PIN) (12+4)
2 x Modular PCIe Cable (8-PIN) (6+2)/(6+2)
1 x Modular SATA Cable (3 SATA)(straight)
1 x Modular SATA Cable (4 SATA)(right angle)
1 x Modular PATA Cable (4 PATA)
FeaturesFully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
ATX 3.0 Compliant: Compliant with the ATX 3.0 power standard from Intel®, supporting the PCIe Gen 5 platform and resisting transient power spikes.
105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance, with 100% Japanese electrolytic capacitors.
Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
Modern Standby
Dimensions5.91"*5.91"*3.39"
Weight4 lbs
Package ContentRM1200e ATX Power Supply | Power cord | DC Cables | Mounting screws | Cable ties
Shipping weight3.40 kg
Package size305 × 191 × 127 mm

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Questions about this item

Should I choose the 1200 W RMe unit or a lower-wattage model for my build?

Pick the 1200 W model when your GPU and CPU combined can draw near 100 A on the 12 V rail; a lower-wattage unit would limit that headroom.

What does the 1200 W rating mean once the PSU is installed in my PC?

It guarantees 1200 W total output with up to 100 A on the +12 V rail, 20 A each on +3.3 V and +5 V, and 3 A on +5 VSB, all while meeting 80 PLUS Gold efficiency.

How does the ATX 3.1 compliance and the 12+4 pin connector cap real-world GPU power?

The native 12+4 pin cable is rated for the full 12 V capability of the PSU, so a Gen 5 graphics card can draw its maximum board power through that single connection.

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