Corsair RM1200x Shift Fully Modular ATX Power Supply - Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black

Name: Corsair RM1200x Shift Fully Modular ATX Power Supply - Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors
Brand: Unbranded
SKU: B0BP88MYM4
Price: 119.98 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$119.98

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*Price sourced from Amazon.com. Price and availability subject to change.

Bottom line: The Corsair RM1200x Shift Fully Modular ATX Power Supply - Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black is a niche pick — read recent reviews before buying in the power supplies & cables category, priced around $119.98. Compare close alternatives before committing.

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…

SpecPicks Verdict

SpecPicks scored Corsair RM1200x Shift Fully Modular ATX Power Supply - Side… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the power supplies & cables category. Compare with similarly-priced alternatives in the power supplies & cables category before committing. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

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.

Full Specifications

Brand	Corsair
Color	Black
Wattage	1200 watts
Model Name	RM1200x SHIFT
Unit Count	1 Count
Form Factor	Internal
Model Number	CP-9020254-NA
Built-In Media	Item
Connector Type	ATX, EPS
Cooling Method	Air
Item Type Name	Power Supplies
Number of Fans	1
Output Wattage	1200
Item Dimensions	7.09 x 5.91 x 5.08 inches
Mfr Part Number	CP-9020254-NA
Number of Items	1
Compatible Devices	Personal Computer
Power Supply Design	Full Modular
Warranty Description	10 year manufacturer
Maximum Input Voltage	240 volts

Ready to buy?

Corsair RM1200x Shift Fully Modular ATX Power Supply - Side Interface - ATX 3.1 & PCIe 5.1 Compliant - Zero RPM Fan Mode - 105°C-Rated Capacitors - 80 Plus Gold Efficiency - Black is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Price and availability subject to change.