{"data":{"slug":"corsair-rm850x-2024","type":"power_supply","brand":"CORSAIR","name":"RM850x (2024)","aliases":["RMx Series RM850x","RM850x ATX 3.1","RM850x ATX v3.1","RM850x 2024","CP-9020270-NA","CP-9020270-EU","CP-9020270-UK"],"release_date":"2024-09","url":"https://arkivo.dev/power-supplies/corsair-rm850x-2024","specs":{"series":"RMx","model_numbers":["CP-9020270-NA","CP-9020270-EU","CP-9020270-UK"],"gtins":["840006667506","840006667445","840006667544"],"announce_date":"2024-09-10","status":"available","predecessor":null,"successor":null,"launch_price_usd":149.99,"launch_price_eur":null,"markets":null,"colors":null,"manufacturer_url":"https://www.corsair.com/us/en/p/psu/cp-9020270-na/rmx-series-rm850x-fully-modular-power-supply-cp-9020270-na","spec_sheet_url":null,"manual_url":"https://www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-series/","eprel_registration_number":null,"warranty_years":10,"psu_standard":"atx","psu_atx_version":"atx_3_1","pcie_cem_version":"pcie_5_1","psu_modular":"full","oem_manufacturer":"Channel Well Technology (CWT)","psu_w":850,"rated_power_temp_c":50,"rail_12v_design":"single","rail_12v_current_a":70.8,"rail_12v_power_w":849.6,"minor_rails_combined_w":150,"rail_5vsb_current_a":3,"ac_input_voltage":{"min_v":100,"max_v":240},"alpm_support":true,"efficiency_80_plus":null,"cybenetics_efficiency_115v":"cybenetics_gold","cybenetics_efficiency_230v":"cybenetics_gold","cybenetics_noise_115v":"a","cybenetics_noise_230v":"a","measured_avg_efficiency_115v_pct":88.815,"measured_avg_efficiency_230v_pct":90.944,"measured_light_load_efficiency_115v_pct":75.825,"measured_avg_power_factor_115v":0.99,"measured_avg_noise_115v_dba":21.34,"measured_noise_full_load_115v_dba":30.8,"measured_vampire_power_115v_w":0.0179,"measured_hold_up_time_ms":25,"measured_ripple_12v_mv":24.2,"measured_load_regulation_12v_pct":0.63,"cables":[{"connector":"atx_24pin","count":1,"cable_count":1,"length_mm":610,"gauge_awg":"16-20AWG","rated_power_w":null},{"connector":"eps_8pin","count":2,"cable_count":2,"length_mm":750,"gauge_awg":"18AWG","rated_power_w":null},{"connector":"pcie_8pin","count":3,"cable_count":3,"length_mm":650,"gauge_awg":"16-18AWG","rated_power_w":null},{"connector":"12v_2x6","count":1,"cable_count":1,"length_mm":650,"gauge_awg":null,"rated_power_w":600},{"connector":"sata","count":8,"cable_count":2,"length_mm":505,"gauge_awg":"18AWG","rated_power_w":null},{"connector":"molex","count":3,"cable_count":1,"length_mm":550,"gauge_awg":"18AWG","rated_power_w":null}],"eps_connector_count":2,"pcie_8pin_connector_count":3,"gpu_16pin_connector_count":1,"sata_connector_count":8,"molex_connector_count":3,"cable_style":"embossed","fan_size_mm":140,"fan_bearing":"fluid_dynamic","fan_mode":"semi_passive","fan_mode_switch":null,"protections":["ocp","ovp","uvp","opp","otp","scp","nlo","sip"],"all_japanese_capacitors":true,"mtbf_h":100000,"software_monitoring":null,"software_name":null,"power_display":null,"rgb_lighting":null,"dimensions_mm":{"width_mm":150,"height_mm":86,"depth_mm":160},"weight_kg":1.79,"in_the_box":null},"variants":[{"model_number":"CP-9020270-NA","gtin":"840006667506"},{"model_number":"CP-9020270-EU","gtin":"840006667445"},{"model_number":"CP-9020270-UK","gtin":"840006667544"}],"sources":[{"url":"https://www.corsair.com/us/en/p/psu/cp-9020270-na/rmx-series-rm850x-fully-modular-power-supply-cp-9020270-na","kind":"manufacturer_page","accessed":"2026-10-14","fields":["series","model_numbers","status","manufacturer_url","warranty_years","psu_standard","psu_atx_version","pcie_cem_version","psu_modular","psu_w","rated_power_temp_c","alpm_support","cybenetics_noise_115v","cybenetics_noise_230v","cable_style","fan_size_mm","fan_bearing","fan_mode","all_japanese_capacitors","mtbf_h","dimensions_mm","cables","rail_12v_current_a","rail_12v_power_w","minor_rails_combined_w","rail_5vsb_current_a","ac_input_voltage"],"notes":{"model_numbers":"SKU CP-9020270-NA. The EU and UK units are CP-9020270-EU and CP-9020270-UK, listed on Corsair's German page and by UK retailers with the same Tech Specs. The Japan unit is CP-9020270-JP and is not stored.","status":"Page shows the product in stock.","warranty_years":"Tech Specs: Warranty 10 Year. The page is corsair.com US, so the market is US.","psu_standard":"Tech Specs: Dimensions 160x150x86. The back face is 150 x 86 mm, the standard ATX size.","psu_atx_version":"Tech Specs: ATX12V Version 3.1.","pcie_cem_version":"Feature list: ATX 3.1 compliant, supporting PCIe 5.1.","psu_w":"Tech Specs: Continuous Power W 850 Watts.","rated_power_temp_c":"Overview: 50 C continuous operating temperature. The press release rates the power output at a 50 C ambient temperature.","alpm_support":"Tech Specs: Modern Standby Yes. The Cybenetics report ticks ALPM compatible.","cybenetics_noise_115v":"Tech 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.","cybenetics_noise_230v":"Tech Specs: Cybenetics Noise A, with no input voltage. The Cybenetics report shows A at both voltages.","cable_style":"Cable listing: Cable Type Embossed for every cable. The Tech Specs row says Type 4.","fan_size_mm":"Overview: 140mm low-noise fan.","fan_bearing":"Overview: 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.","fan_mode":"Tech Specs: Zero RPM Mode Yes. The fan is off at low to medium loads.","all_japanese_capacitors":"Overview: 100% industrial-grade, 105 C rated Japanese electrolytic capacitors.","mtbf_h":"Tech Specs: MTBF Hours 100,000 hours. The test temperature is not stated.","dimensions_mm":"Tech Specs: 160x150x86 with no unit. The manual gives length 160 mm, width 150 mm and height 86 mm. Depth is 160 mm.","cables":"Cable listing: 1 ATX 24-pin 610 mm, 2 EPS 8-pin (4+4) 750 mm, 1 PCIe 12V-2x6 (12+4) 650 mm, 3 PCIe 8-pin (6+2) 650 mm, 2 SATA cables with 4 plugs each (505 mm to the first plug, 115 mm spacing, 850 mm total), 1 PATA cable 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 cable 25 mm. PATA plugs are the 4-pin Molex plugs. The page does not rate the 12V-2x6 cable. The Cybenetics report and Hardware Busters list it at 600 W. Gauges come from the Cybenetics report. The 16-24AWG range for the 12V-2x6 cable includes the thin sideband wires, so no gauge is stored for it. Cybenetics lists the SATA cable at 500 mm, which is not stored.","rail_12v_current_a":"Power table: +12V 70.8A, 849.6W, model RPS0197, part no. 75-005876.","rail_12v_power_w":"Power table: +12V 70.8A, 849.6W.","minor_rails_combined_w":"Power table: +3.3V 20A and +5V 20A with one 150W cell.","rail_5vsb_current_a":"Power table: +5VSB 3A, 15W.","ac_input_voltage":"Power table: AC input 100-240V, input current 10A-5A, 47-63Hz."}},{"url":"https://www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-series/","kind":"manual","accessed":"2026-10-14","fields":["manual_url","rail_12v_current_a","rail_12v_power_w","minor_rails_combined_w","rail_5vsb_current_a","ac_input_voltage","dimensions_mm","protections","cables"],"notes":{"rail_12v_current_a":"RM850x power table: +12V 70.8A, 849.6W, model RPS0197.","rail_12v_power_w":"RM850x power table: +12V 70.8A, 849.6W.","minor_rails_combined_w":"RM850x power table: +3.3V 20A and +5V 20A, 150W.","rail_5vsb_current_a":"RM850x power table: +5Vsb 3A, 15W.","ac_input_voltage":"Power table: AC input rating 100V-240V, input current 10A-5A, 47Hz-63Hz.","dimensions_mm":"RM850x specifications: length 160 mm, width 150 mm, height 86 mm.","protections":"Protections section: OVP and UVP on 12V, 5V and 3.3V, OCP on 3.3V, 5V and 12V, OTP, SCP and OPP. The six maker protections are stored together with NLO and SIP from the Cybenetics tests.","cables":"Included cables: 1x ATX 24-pin 610 mm, 2x EPS 8-pin (4+4) 750 mm, 1x PCIe 12V-2x6 (12+4) 650 mm, 3x PCIe 8-pin (6+2) 650 mm, 2x SATA with 4 plugs 850 mm, 1x PATA with 3 plugs 750 mm."}},{"url":"https://web.archive.org/web/20240913090852/https://www.corsair.com/us/en/p/psu/cp-9020270-na/rmx-series-rm850x-fully-modular-power-supply-cp-9020270-na","kind":"manufacturer_page","accessed":"2026-10-14","fields":["launch_price_usd"],"notes":{"launch_price_usd":"Archived copy of the Corsair US page from 2024-09-13, three days after launch. It shows a regular price of 149.99 USD with no discount, excluding sales tax. Hardware Busters gives an MSRP of 150 USD excluding VAT. TweakTown prints 169.99 USD, which is the later list price on Corsair's page today."}},{"url":"https://www.corsair.com/newsroom/press-release/corsair-updates-popular-rmx-series-low-noise-power-supplies-with-atx-3-1-compliance-and-native-atx-12v-2x6-connector","kind":"press_release","accessed":"2026-10-14","fields":["release_date","announce_date","rated_power_temp_c","all_japanese_capacitors","cable_style","fan_size_mm","fan_bearing"],"notes":{"release_date":"Press release dated September 10, 2024 for the 750W, 850W and 1000W RMx units. It says they are available now from the Corsair webstore and retailers. It gives no prices.","announce_date":"Press release dated September 10, 2024.","rated_power_temp_c":"Rated power output at a 50 C ambient temperature.","all_japanese_capacitors":"100% Japanese electrolytic capacitors.","cable_style":"Fully modular, embossed, ultra-flexible cables.","fan_size_mm":"140mm fan.","fan_bearing":"140mm fluid-dynamic bearing (FDB) fan."}},{"url":"https://www.cybenetics.com/evaluations/psus/2399/","kind":"measurement","accessed":"2026-10-14","fields":["oem_manufacturer","alpm_support","cybenetics_efficiency_115v","cybenetics_efficiency_230v","cybenetics_noise_115v","cybenetics_noise_230v","measured_avg_efficiency_115v_pct","measured_avg_efficiency_230v_pct","measured_light_load_efficiency_115v_pct","measured_avg_power_factor_115v","measured_avg_noise_115v_dba","measured_noise_full_load_115v_dba","measured_vampire_power_115v_w","measured_hold_up_time_ms","measured_ripple_12v_mv","measured_load_regulation_12v_pct","cables","fan_size_mm","fan_bearing","fan_mode"],"notes":{"oem_manufacturer":"DUT Information: OEM/ODM Channel Well Technology. Parts description: Manufacturer (OEM) CWT.","alpm_support":"Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.","cybenetics_efficiency_115v":"Report 24PS2399A, certification ID 252399, issued Apr 1, 2024. The ETA badge shows Gold at 115V. The model name is RM850x (ATX v3.1). Corsair also says Cybenetics Gold without a voltage.","cybenetics_efficiency_230v":"The ETA badge shows Gold at 230V.","cybenetics_noise_115v":"The LAMBDA badge shows A at 115V.","cybenetics_noise_230v":"The LAMBDA badge shows A at 230V.","measured_avg_efficiency_115v_pct":"Average over more than 1450 load combinations at 115V. Tested Mar 29, 2024 on sample serial A6GGA404K007EE, received Mar 14, 2024. Ambient 28-32 C. DUT note: CP-9020270 (Semi-Passive Off).","measured_avg_efficiency_230v_pct":"Average over more than 1450 load combinations at 230V.","measured_light_load_efficiency_115v_pct":"Efficiency at 2% load (more than 500 W unit) at 115V.","measured_avg_power_factor_115v":"Average over more than 1450 load combinations at 115V.","measured_avg_noise_115v_dba":"Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Bruel and Kjaer 2270 G4 sound analyzer. The DUT note says semi-passive off, but the typical load table shows the fan at 0 rpm from 10% to 50% load, so the report does not make clear whether the fan ran in every part of the average. The 230V average is 21.37 dBA.","measured_noise_full_load_115v_dba":"Typical load tests at 115V, 100% load row: 30.8 dB(A) at 986 rpm fan speed, ambient about 30 C. At 230V it is also 30.8 dB(A) at 986 rpm.","measured_vampire_power_115v_w":"Standby power consumption at 115V with no load on +5VSB.","measured_hold_up_time_ms":"Hold-Up Time and PWR_OK Signal: hold-up time 25.00 ms, AC loss to PWR_OK 21.30 ms, PWR_OK inactive to DC loss 3.70 ms, at maximum continuous load. The report names no input voltage.","measured_ripple_12v_mv":"Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 25.82 mV.","measured_load_regulation_12v_pct":"Non-accredited measurement. 12V load regulation at 115V. At 230V it is 0.64%.","cables":"Cables 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 12V-2x6 cable is listed at 650 mm.","fan_size_mm":"Cooling: 140mm Fluid Dynamic Bearing Fan (NR140HP), 12V, 0.33A.","fan_bearing":"Cooling: Fluid Dynamic Bearing fan.","fan_mode":"Semi-Passive Operation checked and selectable."}},{"url":"https://hwbusters.com/psus/corsair-rm850x-atx-v3-1-psu-review/","kind":"review_site","accessed":"2026-10-14","fields":["rail_12v_design","weight_kg","oem_manufacturer","launch_price_usd","cable_style","protections"],"notes":{"rail_12v_design":"Technical specifications: 12V combined 850W on 1 12V rail.","weight_kg":"Technical specifications: 1.79 kg (3.95 lb). Corsair's 3 kg figure is not stored, since it is most likely a packed weight.","oem_manufacturer":"Technical specifications: OEM Channel Well Technology (CWT).","launch_price_usd":"Technical specifications: MSRP (excluding VAT) 150 USD. Review published September 14, 2024.","cable_style":"Cables page: all cables are embossed.","protections":"Protection Features page, which presents the Cybenetics protection tests: OCP, OPP, OTP, SCP, NLO, fan failure protection and SIP (surge MOV, inrush NTC thermistor and bypass relay) all shown. The page has no OVP or UVP row."}},{"url":"https://www.igorslab.de/en/corsair-rm850x-atx-v3-1-power-supply-2024-test/","kind":"review_site","accessed":"2026-10-14","fields":["weight_kg"],"notes":{"weight_kg":"Igor's Lab copy of the Hardware Busters review, published November 6, 2024. It lists 1.79 kg and 150 x 85 x 160 mm. The maker's 86 mm height is stored."}},{"url":"https://www.comparateur-gamer.fr/prix/corsair-rm850x-2024-840006667445","kind":"spec_database","accessed":"2026-10-14","fields":["gtins","variants"],"notes":{"gtins":"EAN 840006667445 with reference CP-9020270-EU.","variants":"Variant row for the EU unit."}},{"url":"https://www.ebay.com/p/22074154707","kind":"retailer","accessed":"2026-10-14","fields":["gtins","variants"],"notes":{"gtins":"eBay product page for CP-9020270-NA shows UPC 0840006667506. This is the only source for the NA code. The check digit is valid.","variants":"Variant row for the NA unit."}},{"url":"https://www.scan.co.uk/products/850w-corsair-rmx-series-rm850x-black-fully-modular-cybenetics-gold-pcie-51-single-rail-140mm-fan-atx","kind":"retailer","accessed":"2026-10-14","fields":["gtins","model_numbers","variants"],"notes":{"gtins":"Scan lists manufacturer code CP-9020270-UK with GTIN 840006667544.","model_numbers":"Scan lists CP-9020270-UK.","variants":"Variant row for the UK unit."}}],"fields_filled":52,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}