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Rectangular ATX power supply with side-mounted modular connectors, matte black finish, 140mm fan visible

Corsair

Corsair CP-9020254-NA RM1200x Shift 1200W power supply

SKU CH-CENW-KTZEM MPN CP-9020254-NA

A 1200 W fully modular ATX 3.1 supply with a side-mounted cable panel, 140 mm FDB fan and 80 PLUS Gold efficiency

  • Max wattage1200 W
  • Power efficiency> 87%
  • Modular cablingFull modular
  • Fan configuration1 × 140 mm fluid dynamic bearing fan
  • Main power connector1x 24-pin ATX (24-pin) Connector
  • PCIe power connectors4 × 6+2-Pin

Model ATX 3.1 80+ Gold (1200W) Shift

  • 1200 W continuous power for demanding builds
  • ATX 3.1 certified for PCIe Gen 5.1 platform support
  • Fully modular micro-fit connectors reduce cable clutter
  • Zero RPM fan mode enables silent operation at low loads
  • 105 °C Japanese capacitors ensure long-term reliability

1200W ATX 3.1 power supply

The Corsair RM1200x Shift delivers 1200 W of continuous power in an ATX 3.1 certified unit. It targets builders who need high headroom for multi-GPU systems or workstations with heavy transient loads. Fully modular Type 5 Gen 1 connectors reduce cable clutter inside the case. Cybenetics Gold efficiency and A- noise ratings confirm low waste heat and quiet running.

Check ATX 3.1 support and cable count

Verify that your motherboard and graphics cards are compatible with the ATX 3.1 power standard before ordering. The unit supplies one 24-pin ATX connector, two EPS connectors, four 6+2-pin PCIe connectors and sixteen SATA connectors. Ensure your component list matches these quantities and that your case can accommodate a 160 mm deep power supply.

Side-panel modular layout eases cable routing

The patented side-facing connector panel lets you plug cables in from the side rather than the rear, simplifying routing in tight compartments. Zero RPM fan mode stops the 140 mm fluid dynamic bearing fan at low and medium loads for silent operation. 105 °C Japanese electrolytic capacitors and Modern Standby support provide stable power and fast wake times.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $199.99
Pricier than about 63% of the 10,869 comparable items (median $142.99).
Max wattage 1200 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameCORSAIR
Product lineRMx SHIFT Series
Model nameCorsair RM1200x
Part numbercp-9020254-na
Product typeATX 3.1
Graphics
SLI supportYes
Ports & slots
PCIe power connectors4 × 6+2-Pin
SATA power connectors16 connectors
Output type+5 V@20A, +3.3 V@20A, +12 V@100A, +5Vsb@3A
Connection types1 x ATX
2 x EPS
8 x PCIe
16 x SATA
8 x PATA
12V power connector2 × 8 pin EPS 12 V, 1 × 24 pin ATX 12 V
Peripheral connector8 connectors
Power
Max wattage1200 W
Power efficiency> 87%
Modular cablingFull modular
Main power connector1x 24-pin ATX (24-pin) Connector
Efficiency certification80 PLUS Gold, Cybenetics Gold certified
Supply voltage100 V a.c-240 V a.c
200 V a.c-240 V a.c (Only for China &Korea)
AC input frequency47–63 Hz
Rated input current15A-7.5A (100 V a.c-240 V a.c)
10A (200 V a.c-240 V a.c)
Rated power1200 W
Size & build
Product dimensions7.09 in × 5.91 in × 5.08 in
Product weight4.4 lb (2 kg)
Top fans size140 mm
Rear fans size140 mm
Shipping weight3.90 kg
Package size312 × 216 × 135 mm
Compatibility
Haswell compatibilityYes
PSU length limit160 mm
Environment & compliance
PSU noise ratingCybenetics A-
More details
Fan configuration1 × 140 mm fluid dynamic bearing fan
Mean time between failures>100,000 h
Top fans bearing typeFluid Dynamic
Rear fans bearing typeFluid Dynamic Bearing

Other versions of this model

5 more in the same range

Questions about this item

Does the RM1200x Shift include every cable I need or must I buy any separately?

The unit is fully modular with Type 5 Gen 1 micro-fit connectors; all required cables ship in the box so nothing extra needs purchasing.

How do I decide between the available capacities in this series?

This model delivers 1200 W continuous power; choose it when your GPU and CPU combined draw approaches that level, otherwise a lower-wattage RMx Shift unit will suffice.

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

It can supply 1200 W continuously at up to 50 °C ambient, meets ATX 3.1 and PCIe 5.1 transient-spike requirements, and holds 80 PLUS Gold plus Cybenetics Gold efficiency with A- noise.

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