PC parts / Power supplies
CORSAIRPower supply
RM1000x (2024)
Released September 2024.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026Press release dated September 10, 2024. The RMx update is available immediately from the Corsair webstore and retailers. It gives no prices. Last checked 16 October 2026.
- Power
- 1,000W
- Efficiency
- Cybenetics Platinum
- Modular cables
- Fully modular
- ATX version
- ATX 3.1
51 of 66 fields known.
At a glance
4-pin Molex connectors
6
Higher than 98% of other power supplies.
SATA power connectors
12
Higher than 84% of other power supplies.
General
- Model numbers
- CP-9020271-NA, CP-9020271-EU, CP-9020271-UK1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026SKU CP-9020271-NA. The EU and UK units are CP-9020271-EU and CP-9020271-UK, listed on Corsair's German and UK pages with the same Tech Specs. The Japan unit is CP-9020271-JP and is not stored.
- GTIN / EAN
- 840006667698, 8400066676368Spec databasebuildcores.com/products/PSU/4wctofbfr/Corsair-RM1000x-(2024)-Black-ATX-1000W-Fully-ModularRead 14 October 2026BuildCores lists UPC 840006667698 (EAN 0840006667698) for the Black RM1000x (2024) with part numbers CP-9020271-NA, -EU, -AU and -UK. The NA code comes from this one source.9Spec databasecomparateur-gamer.fr/prix/corsair-rm1000x-2024-840006667636Read 14 October 2026EAN 840006667636 with reference CP-9020271-EU.
- Announced
- Not available
- Predecessor
- Not available
- Successor
- Not available
- Launch price (US)
- Not available
- Launch price (EU)
- Not available
- Markets
- Not available
- Colours
- Not available
- PCIe CEM version
- PCIe 5.11Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Feature list: PCIe 5.1.
- Modular cables
- Fully modular1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026
- Built by (OEM)
- Channel Well Technology (CWT)5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026DUT Information: OEM/ODM Channel Well Technology. Parts description: Manufacturer (OEM) CWT.6Reviewhwbusters.com/psus/corsair-rm1000x-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: OEM Channel Well Technology (CWT).
Power
- Rated continuous power
- 1,000W1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: Continuous Power 1000 Watts.
- Full power rated up to
- 50°C1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Overview: 1,000W continuous at 50 C. The press release also rates the power output at 50 C ambient.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026Rated power output at a 50 C ambient temperature.
- 12V rail design
- Single rail6Reviewhwbusters.com/psus/corsair-rm1000x-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: 12V combined 1000W on a single 12V rail (83.3A).
- +12V max current
- 83.3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Power table: +12V 83.3A, 1000W, model RPS0198, part no. 75-005877.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026RM1000x power table: +12V 83.3A, 1000W, model RPS0198.
- +12V max power
- 1,000W1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Power table: +12V 83.3A, 1000W.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026RM1000x power table: +12V 83.3A, 1000W.
- +3.3V and +5V combined power
- 150W1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Power table: +3.3V 20A and +5V 20A with one 150W cell.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026RM1000x power table: +3.3V 20A and +5V 20A, 150W.
- +5V standby current
- 3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Power table: +5VSB 3A, 15W.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026RM1000x power table: +5Vsb 3A, 15W.
- AC input voltage
- Lowest100Highest240V1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Power table: AC input 100-240V, 47-63Hz, 12A-5A. The manual prints 12A-6A.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026Power table: AC input rating 100V-240V, input current 12A-6A, 47Hz-63Hz.
- Alternative low power mode (ALPM)
- Yes1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: Modern Standby Yes. The Cybenetics report ticks ALPM compatible.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.
Certifications
- 80 PLUS rating
- Not available
- Cybenetics efficiency at 115V
- Cybenetics Platinum5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Report 24PS2396A, certification ID 252396, issued Mar 28, 2024. The ETA badge shows Platinum at 115V. The model name is RM1000x (ATX v3.1). The maker pages and the launch press release say Cybenetics Gold without a voltage, and Hardware Busters writes that Corsair claims a lower level than the report shows. The report level is stored.
- Cybenetics efficiency at 230V
- Cybenetics Platinum5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026The ETA badge shows Platinum at 230V. The maker says Gold without a voltage.
- Cybenetics noise at 115V
- A1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: Cybenetics Noise A, with no input voltage. The Cybenetics report shows A at both voltages. The launch press release says A+, which the report does not show.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026The LAMBDA badge shows A at 115V.
- Cybenetics noise at 230V
- A1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: Cybenetics Noise A, with no input voltage. The Cybenetics report shows A at both voltages.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026The LAMBDA badge shows A at 230V.
Measured
- Average efficiency at 115V (measured)
- 89.047%5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Average over more than 1450 load combinations at 115V. Tested Mar 22, 2024 on sample serial A6GHA404L0097U, received Mar 14, 2024. Ambient 28-32 C. DUT note: CP-9020271 (Semi-Passive Off).
- Average efficiency at 230V (measured)
- 91.139%5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Average over more than 1450 load combinations at 230V.
- Light-load efficiency at 115V (measured)
- 73.73%5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Efficiency at 2% load (more than 500 W unit) at 115V.
- Average power factor at 115V (measured)
- 0.9885Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Average over more than 1450 load combinations at 115V.
- Average noise at 115V (measured)
- 24.78dB(A)5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Average over more than 1450 load combinations at 115V with semi-passive mode off, so the fan was always spinning. Ambient 28-32 C. Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 24.81 dBA.
- Noise at full load at 115V (measured)
- 36.5dB(A)5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Typical load tests at 115V, 100% load row: 36.5 dB(A) at 1211 rpm fan speed, ambient about 30 C. At 230V it is 35.5 dB(A) at 1113 rpm.
- Standby power with no load at 115V (measured)
- 0.0178W5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Standby power consumption at 115V with no load on +5VSB.
- Hold-up time (measured)
- 22.4ms5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 22.4 ms, AC loss to PWR_OK 18.6 ms, PWR_OK inactive to DC loss 3.8 ms, at maximum continuous load. The report names no input voltage.
- 12V ripple at full load (measured)
- 23.88mV5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 23.93 mV.
Cables and connectors
- Cables
Connector Connectors Cables Length to first plug (mm) Wire gauge Rated power (W) ATX 24-pin (20+4) 1 1 610 16-20AWG Not available CPU 8-pin (EPS, 4+4) 2 2 750 18AWG Not available PCIe 8-pin (6+2) 4 4 650 16-18AWG Not available 12V-2x6 1 1 650 16AWG 600 SATA power 12 3 505 18AWG Not available 4-pin Molex 6 2 550 18AWG Not available Source1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Cable listing: 1 ATX 24-pin 610 mm, 2 EPS 8-pin (4+4) 750 mm, 1 PCIe 12V-2x6 (12+4) 650 mm, 4 PCIe 8-pin (6+2) 650 mm, 3 SATA cables with 4 plugs (505 mm to the first plug, 115 mm spacing, 850 mm total), 2 PATA cables with 3 plugs (550 mm to the first plug, 100 mm spacing, 750 mm total). All lengths have a tolerance of 10 mm, the PATA cables 25 mm. The page calls the 12V-2x6 cable rated for 600W. PATA plugs are the 4-pin Molex plugs. The Cybenetics report lists the 12V-2x6 cable at 600 mm and the SATA cable at 500 mm, which are not stored.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026Included cables: 1x ATX 24-pin, 2x EPS 8-pin (4+4), 1x PCIe 12V-2x6 (12+4), 4x PCIe 8-pin (6+2) for the RM1000x, 3x SATA with 4 plugs, 2x PATA with 3 plugs. Lengths 610, 750, 650, 650, 850 and 750 mm total, plus or minus 10 mm.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Cables and Connectors table: ATX 16-20AWG, EPS 18AWG, 6+2 pin PCIe 16-18AWG, 12+2 pin PCIe (600W) 16-24AWG, SATA 18AWG and Molex 18AWG, no in-cable capacitors. The 16-24AWG range for the 12V-2x6 cable includes the thin sideband wires. Lengths are not stored from this table where the maker states them.7Reviewprofesionalreview.com/2024/09/10/corsair-rm1000x-atx3-1-reviewRead 14 October 2026Wire gauge: 12VHPWR cable 16 AWG except the SENSE0 and SENSE1 wires. Published September 10, 2024.- CPU (EPS) connectors
- 2
- PCIe 8-pin connectors
- 4
- 16-pin GPU connectors
- 1
- SATA power connectors
- 12
- 4-pin Molex connectors
- 6
- Cable style
- Embossed or debossed flat1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Cable listing: Cable Type Embossed for every cable. The accessory cables are called Type-4 Debossed.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026Fully modular, embossed, ultra-flexible cables.
Fan
- Fan size
- 140mm1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Overview: 140mm low-noise fan.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026140mm fan.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Cooling: 140mm Fluid Dynamic Bearing Fan (NR140HP), 12V, 0.33A.
- Fan bearing
- Fluid dynamic (FDB)1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Overview: a fluid dynamic bearing fan with magnetic dome structure. The Cybenetics report lists a Fluid Dynamic Bearing fan. The bearing is stored as fluid dynamic, since the maker names the dome as a structure of the fan and not as the bearing.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026140mm fluid-dynamic bearing (FDB) fan.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Cooling: Fluid Dynamic Bearing fan.
- Fan mode
- Semi-passive1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: Zero RPM Mode Yes. The fan stops at low to medium loads. One FAQ answer says below 40% load, which the manual does not state.5Measurementcybenetics.com/evaluations/psus/2396Read 14 October 2026Semi-Passive Operation checked and selectable.
- Fan mode switch
- Yes1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Overview: the manual fan override knob overrides Zero RPM mode. The manual says it adjusts the minimum starting fan speed.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026Fan speed knob: use it to override the Zero RPM fan mode and adjust the minimum starting fan speed. The fan controller overrides the knob when temperatures need more airflow.
Protection and parts
- Protections
- Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP)1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026FAQ lists OVP, UVP, OCP, OPP, SCP and OTP. The manual's Safety and Protection section lists the same six.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026Safety and Protection section: OVP, UVP, OCP, OTP, SCP and OPP.7Reviewprofesionalreview.com/2024/09/10/corsair-rm1000x-atx3-1-reviewRead 14 October 2026Protections: OCP, OVP, OPP, OTP, SCP, UVP and PG, which matches the maker's six.
- All-Japanese capacitors
- Yes1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Overview: 100% industrial-grade, 105 C rated Japanese electrolytic capacitors.4Press releasecorsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connectorRead 14 October 2026100% Japanese electrolytic capacitors.
Monitoring and lighting
We could not find any of these 4 fields. Show them
- Software monitoring
- Not available
- Software
- Not available
- Built-in power display
- Not available
- RGB lighting
- Not available
Dimensions and weight
Front and side, drawn to scale.
- Dimensions
- Width150Height86Depth160mm(5.9 × 3.4 × 6.3 in)1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026Tech Specs: 160x150x86 with no unit. The manual gives length 160 mm, width 150 mm and height 86 mm. Depth is 160 mm.3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026RM1000x Specifications: length 160 mm, width 150 mm, height 86 mm.
In the box
We could not find any of these 1 fields. Show them
- In the box
- Not available
Links
- Product page
- www.corsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-na1Maker product pagecorsair.com/us/en/p/psu/cp-9020271-na/rmx-series-rm1000x-fully-modular-power-supply-cp-9020271-naRead 14 October 2026
- Spec sheet
- Not available
- Manual
- www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-series3Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-seriesRead 14 October 2026
- EPREL registration number
- Not available
Warranty
Compare with
Pick a power supply to see both side by side. Differences are marked yellow.
Variants
Each variant lists only what differs from the specs above.
| Model number | GTIN | In the box |
|---|---|---|
| CP-9020271-NA | 840006667698 | Not available |
| CP-9020271-EU | 840006667636 | C13 power cord with European plug, Mounting screws, Cable combs, User manual |
| CP-9020271-UK | Not available | Not available |
Sources
We read 9 sources for this power supply. The numbers match the markers in the sheet.
- Measurementcybenetics.com/evaluations/psus/2396
See a wrong value? Tell us and name the field.