CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply
Bottom line: The CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply ($179.99 on Amazon as of 2026-10-06): ATX 3.1 compliant with native 12V-2x6 for direct RTX 50-series GPU connection; main trade-off: 1000W may be more than budget or SFF builds need.
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Complete build that uses this part: Dual Radeon AI PRO R9700 Workstation: 64 GB Local LLM Build (PSU) — see the full parts list for the rest of the build.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ ATX 3.1 compliant with native 12V-2x6 for direct RTX 50-series GPU connection
- ✓ Cybenetics Gold-certified, up to 91% efficiency for cooler, quieter running
- ✓ Fully modular cabling — connect only the cables your build needs
- ✓ 1000W headroom resists PCIe 5.1 transient power spikes
- ✓ 100% Japanese 105°C electrolytic capacitors with 10-year warranty
Cons
- ✗ 1000W may be more than budget or SFF builds need
- ✗ ATX 3.1/12V-2x6 benefits wasted on older non-PCIe-5.x GPUs
- ✗ Standard 140mm ATX size won't fit SFX/ITX cases
- ✗ Gold efficiency trails Platinum/Titanium units at this price
Manufacturer description
CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel®, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty…
SpecPicks Verdict
SpecPicks scored CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. Compare with similarly-priced alternatives in the power supplies & cables category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
- Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
- ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
- Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
- Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
Full Specifications
| Brand | Corsair |
|---|---|
| Color | Black |
| Wattage | 1000 watts |
| Model Name | RMx |
| Form Factor | Internal |
| Model Number | CP-9020271-NA |
| Fully Modular | Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs. |
| Built-In Media | Item |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 1000 Watts |
| Item Dimensions | 2.3 x 3.39 x 5.91 inches |
| Mfr Part Number | CP-9020271-NA |
| ATX 3.1 Compliant | Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes. |
| Compatible Devices | Monitor |
| Power Supply Design | Full Modular |
| Warranty Description | 10 Year Manufacturer |
| Maximum Input Voltage | 240 Volts (AC) |
| Minimum Input Voltage | 100 Volts (AC) |
| Full listing title | CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black |
Ready to buy?
CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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