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Corsair · 1200 W · ATX

CORSAIR RM1200x Shift

ATX 3.0 · 80 PLUS Gold · Modular

Capability
84
Cap / price
59
Wattage value
67
Amazon
$142
CORSAIR RM1200x Shift
View CORSAIR RM1200x Shift Gallery in high resolution
$142
Not currently available Updated Aug 16, 2026 Prime FBA
Capability84.3
Capability / price59.2
Wattage value67.4
$142 on Amazon PSU table Compare this PSU

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Written analysis

CORSAIR RM1200x Shift at a glance

The CORSAIR RM1200x Shift is a 1200 W ATX power supply built to the ATX 3.0 generation. Efficiency is listed as 80 PLUS Gold. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 84.3, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 10 years. +12V output is 100 A.

Best fit: Systems whose component power budget calls for a supply rated at 1000 W or more.

Platform and cooling

Dimensions are listed as 180mm x 150mm x 86mm. Cooling fan size is 140 mm. The unit uses 1 +12V rail at up to 100.00 A per rail. Certifications include 80 PLUS Gold.

Current value

At $142, price per kilowatt is $118.74. Capability / price is 59.2 and wattage value is 67.4. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer
Corsair
PSU
CORSAIR RM1200x Shift
Launch price
—
Amazon price
$142
Amazon availability
Not currently available
Price updated
Aug 16, 2026

Power & efficiency

Wattage
1200 W
Efficiency
80 PLUS Gold
Recorded efficiency
91%
Warranty
10 years

Value

Amazon price
$142
Price / kW
$118.74
Capability
84.3
Capability / price
59.2
Wattage value
67.4

Platform & size

ATX generation
3.0
Form factor
ATX
Dimensions
180mm x 150mm x 86mm
Modular
Yes
Fanless
No

Electrical

Input voltage
100-240
+12V output
100 A
+5V output
20 A
+3.3V output
20 A
+12V rails
1
Max amps / rail
100.00 A

Cooling & build

Fan size
140 mm
Fan stop
Yes
Certifications
80 PLUS Gold

Additional information

Also listed as
RM1200x Shift
Color
Black

Amazon

Price history

Nearby capability

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

Fully Modular Micro-Fit PSU Connectors: CORSAIR Type 5 Gen 1 micro-fit PSU cables mean you only connect the cables your system needs while taking up less space.

Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes.

Zero RPM Fan Mode Support: At low and medium loads the cooling fan switches off entirely for near-silent operation.

100% 105°C-Rated Japanese Electrolytic Capacitors: Premium internal components deliver unwavering power delivery and long-term reliability.

Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.

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