Corsair
RM1200x Shift Fully Modular ATX Power Supply + CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm - Black
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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 classifies CORSAIR RM1200x Shift Fully Modular ATX Power Supply + CORSAIR… as a niche pick — read recent reviews before buying in the power supplies category, based on limited Amazon review volume so far and our ranking model that weights rating × review-volume × price-fit. Corsair's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for power supplies 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
- ✓ Backed by Corsair's warranty and support channels
- ✓ 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 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.
- PCIe 4.0 Bandwidth: Take advantage of the advanced bandwidth and powerful performance of PCIe 4.0 x16 for your GPU, up to 64GB/sec.
- Extended Length: A generous cable length of 300mm makes it easy to install your GPU vertically in compatible cases.
- EMI Shielded: Electromagnetic interference shielded to eliminate signal interference and ensure maximum performance.
Full Specifications
| Brand | Corsair |
|---|---|
| Color | Black |
| Wattage | 1200 watts |
| Fan Count | 1 |
| Model Name | RM1200x Shift |
| Form Factor | ATX |
| EMI Shielded | Electromagnetic interference shielded to eliminate signal interference and ensure maximum performance. |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1200 Watts |
| Extended Length | A generous cable length of 300mm makes it easy to install your GPU vertically in compatible cases. |
| Compatible Devices | Personal Computer |
| PCIe 4.0 Bandwidth | Take advantage of the advanced bandwidth and powerful performance of PCIe 4.0 x16 for your GPU, up to 64GB/sec. |
Ready to buy?
CORSAIR RM1200x Shift Fully Modular ATX Power Supply + CORSAIR Premium PCIe 4.0 x16 Extension Cable 300mm - Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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