{"data":{"slug":"corsair-rm850x-shift-2025","type":"power_supply","brand":"CORSAIR","name":"RM850x SHIFT (2025)","aliases":["RMx SHIFT Series RM850x SHIFT","RM850x SHIFT 2nd Gen","RM850x SHIFT 2025","RM850x Shift (ATX v3.1)","RM850x SHIFT ATX 3.1","CP-9020299-NA","CP-9020299-EU","CP-9020299-UK","RPS0221"],"release_date":"2025-11","url":"https://arkivo.dev/power-supplies/corsair-rm850x-shift-2025","specs":{"series":"RMx SHIFT","model_numbers":["CP-9020299-NA","CP-9020299-EU","CP-9020299-UK"],"gtins":["840440484981","840440484974","840006679448"],"announce_date":"2025-11-04","status":"available","predecessor":null,"successor":null,"launch_price_usd":null,"launch_price_eur":169.9,"markets":null,"colors":["Black"],"manufacturer_url":"https://www.corsair.com/us/en/p/psu/cp-9020299-na/rm850x-shift-fully-modular-atx-power-supply-cp-9020299-na","spec_sheet_url":null,"manual_url":"https://www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generation/","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":"Great Wall","psu_w":850,"rated_power_temp_c":null,"rail_12v_design":"single","rail_12v_current_a":70.8,"rail_12v_power_w":850,"minor_rails_combined_w":120,"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_platinum","cybenetics_efficiency_230v":"cybenetics_platinum","cybenetics_noise_115v":"a_plus_plus","cybenetics_noise_230v":"a_plus_plus","measured_avg_efficiency_115v_pct":90.009,"measured_avg_efficiency_230v_pct":91.794,"measured_light_load_efficiency_115v_pct":72.66,"measured_avg_power_factor_115v":0.992,"measured_avg_noise_115v_dba":10.65,"measured_noise_full_load_115v_dba":32.8,"measured_vampire_power_115v_w":0.0405,"measured_hold_up_time_ms":24.5,"measured_ripple_12v_mv":20.97,"measured_load_regulation_12v_pct":0.57,"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":650,"gauge_awg":"18AWG","rated_power_w":null},{"connector":"pcie_8pin","count":4,"cable_count":3,"length_mm":650,"gauge_awg":"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":9,"cable_count":3,"length_mm":500,"gauge_awg":"18AWG","rated_power_w":null},{"connector":"molex","count":4,"cable_count":1,"length_mm":450,"gauge_awg":"18AWG","rated_power_w":null}],"eps_connector_count":2,"pcie_8pin_connector_count":4,"gpu_16pin_connector_count":1,"sata_connector_count":9,"molex_connector_count":4,"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":1.6,"in_the_box":null},"variants":[{"model_number":"CP-9020299-NA","gtin":"840440484981"},{"model_number":"CP-9020299-EU","gtin":"840440484974","launch_price_eur":169.9},{"model_number":"CP-9020299-UK","gtin":"840006679448"}],"sources":[{"url":"https://www.corsair.com/us/en/p/psu/cp-9020299-na/rm850x-shift-fully-modular-atx-power-supply-cp-9020299-na","kind":"manufacturer_page","accessed":"2026-10-15","fields":["series","model_numbers","manufacturer_url","status","warranty_years","psu_standard","psu_atx_version","pcie_cem_version","psu_modular","psu_w","rail_12v_current_a","rail_12v_power_w","minor_rails_combined_w","rail_5vsb_current_a","ac_input_voltage","alpm_support","cables","cable_style","fan_size_mm","fan_bearing","fan_mode","all_japanese_capacitors","mtbf_h","dimensions_mm"],"notes":{"series":"Product title: RM850x SHIFT. The maker calls the line RMx SHIFT. The page is the second generation (SKU CP-9020299-NA, model RPS0221), not the 2022 RM850x SHIFT (CP-9020252 and CP-9020274, model RPS0160).","model_numbers":"SKU CP-9020299-NA. The power table prints model RPS0221 and part no. 75-006527, which are not stored as model numbers.","status":"Page shows In Stock, with a price of $139.99 against an original price of $169.99.","warranty_years":"Tech Specs: Warranty 10 Year and the Overview says 10-year warranty. The page is the US shop.","psu_standard":"Tech Specs: Dimensions 160mm x 150mm x 86mm. The back face is 150 x 86 mm, the standard ATX size.","psu_atx_version":"Overview: ATX 3.1-certified and PCIe 5.1 compliant. Tech Specs: ATX12V Version 3.1.","pcie_cem_version":"Overview: ATX 3.1-certified and PCIe 5.1 compliant.","psu_modular":"Overview: Fully modular with Type-5 connectors.","psu_w":"Tech Specs: Continuous Power W 850 Watts and Total Power 850W.","rail_12v_current_a":"Power table: +12V 70.8A, 850W.","rail_12v_power_w":"Power table: +12V 70.8A with 850W listed beside the row. The Cybenetics report also prints 850 W for +12V.","minor_rails_combined_w":"Power table: +3.3V 20A and +5V 20A with one 120W cell. The page layout does not tie the 120W to one rail. The Cybenetics report and Hardware Busters print it as the combined +3.3V and +5V power.","rail_5vsb_current_a":"Power table: +5VSB 3A, 15W.","ac_input_voltage":"Power table: AC input 100V-240V, input current 10A-5A, 47Hz-63Hz.","alpm_support":"Tech Specs: Modern Standby Yes. The Cybenetics report ticks ALPM compatible.","cables":"Cable listing: 1 ATX 24-pin 610 mm, 2 EPS 4+4-pin 650 mm, 2 PCIe 8-pin (6+2-pin) 650 mm, 1 90-degree 12V-2x6 to 600W 12V-2x6 (12+4-pin) 650 mm, 1 600W 90-degree 12V-2x6 to 2x 8-pin PCIe (6+2-pin) cable with 2 plugs 650 mm, 3 SATA cables with 3 plugs each (500 mm to the first plug, 100 mm spacing, 700 mm total) and 1 PATA cable with 4 plugs (450 mm to the first plug, 100 mm spacing, 750 mm total). All lengths have a tolerance of 10 mm. PATA plugs are the 4-pin Molex plugs. The 12V-2x6 to 2x 8-pin cable is stored as a PCIe 8-pin cable with 2 plugs. It and the 12V-2x6 cable both plug into the native 12V-2x6 socket of the PSU, as Hardware Busters says the modular panel has one native 12V-2x6 header. The Cybenetics report and Hardware Busters list the 2x 8-pin cable as 2 cables with 2 connectors, which does not match Corsair's listing. Gauges come from the Cybenetics report.","cable_style":"Cable listing: Debossed cable type for every cable. Tech Specs: Cable Type Type 5. Stored as embossed, which covers debossed jackets.","fan_size_mm":"Tech Specs: Fan Size MM 140mm.","fan_bearing":"Tech Specs: Fan Bearing Technology FDB. Overview: 140mm Fluid Dynamic Bearing fan.","fan_mode":"Overview: Zero RPM Mode for near-silent operation at lower loads.","all_japanese_capacitors":"Overview: 105 C-rated, 100% Japanese electrolytic capacitors. The Cybenetics parts list also shows polymer capacitors from FPCAP, which the claim does not cover.","mtbf_h":"Tech Specs: MTBF Hours 100,000 hours. The test temperature is not stated.","dimensions_mm":"Tech Specs: Dimensions 160mm x 150mm x 86mm with no axis names. The quick start guide gives length 160 mm, width 150 mm and height 86 mm. Depth is 160 mm."}},{"url":"https://www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generation/","kind":"manual","accessed":"2026-10-15","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","warranty_years","cables"],"notes":{"manual_url":"Quick start guide of the RMx SHIFT Series 2nd generation. It covers the 750W, 850W and 1000W models. The page also keeps no separate PDF.","rail_12v_current_a":"RM850x power table, model RPS0221, part no. 75-006527: +12V 70.8A, 850W.","rail_12v_power_w":"RM850x power table: +12V 70.8A, 850W.","minor_rails_combined_w":"RM850x power table: +3.3V 20A, +5V 20A and one 120W cell.","rail_5vsb_current_a":"RM850x power table: +5Vsb 3A, 15W.","ac_input_voltage":"RM850x power table: AC input 100V-240V, input current 10A-5A, 47Hz-63Hz.","dimensions_mm":"RM850x specifications: 160mm length, 150mm width, 86mm height.","protections":"Protection section for the series: OVP on 12V, 5V and 3.3V, OCP on 3.3V, 5V and 12V, OTP, SCP and OPP. UVP, NLO and SIP come from the Hardware Busters protection tests.","warranty_years":"CORSAIR RMx SHIFT Series 2nd Gen PSUs have a 10-year warranty.","cables":"Included cables for the RM850x, with the SATA count stated for the 850W: 1x ATX 24-pin 610 mm, 2x EPS 4+4-pin 650 mm, 2x PCIe 8-pin 650 mm, 1x 90-degree 12V-2x6 to 2x 8-pin PCIe 650 mm, 1x 90-degree 12V-2x6 to 600W 12V-2x6 650 mm, 3x SATA, 1x PATA."}},{"url":"https://www.corsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-support","kind":"press_release","accessed":"2026-10-15","fields":["release_date","announce_date","psu_atx_version","pcie_cem_version","psu_modular","all_japanese_capacitors","cable_style","fan_size_mm","fan_bearing","fan_mode","warranty_years"],"notes":{"release_date":"Corsair press release dated November 4, 2025, Milpitas. It says the RMx SHIFT PSUs are available immediately in 750W, 850W and 1000W. Spanish reviews are dated the same day and Hardware Busters follows on November 16, 2025.","announce_date":"Press release dated November 4, 2025.","psu_atx_version":"Meeting ATX 3.1 and PCIe 5.1 standards.","pcie_cem_version":"Meeting ATX 3.1 and PCIe 5.1 standards.","psu_modular":"Fully modular, so builders can use only the cables they need.","all_japanese_capacitors":"105 C-rated 100% Japanese capacitors.","cable_style":"Improved debossed-PVC cables with low-profile combs.","fan_size_mm":"A quiet 140mm fluid dynamic bearing fan.","fan_bearing":"A quiet 140mm fluid dynamic bearing fan.","fan_mode":"Zero RPM mode: the fan switches off entirely at low and medium loads. A rear-mounted knob adjusts fan speed.","warranty_years":"Each unit includes a ten-year warranty."}},{"url":"https://web.archive.org/web/20251105034749/https://www.corsair.com/de/de/p/psu/cp-9020299-eu/rm850x-shift-fully-modular-atx-power-supply-eu-cp-9020299-eu","kind":"manufacturer_page","accessed":"2026-10-15","fields":["launch_price_eur","variants"],"notes":{"launch_price_eur":"Archived copy of the Corsair German page for CP-9020299-EU from 2025-11-05, the day after launch. It shows a price of 169,90 EUR with no discount, including VAT. The Spanish outlet Geektopia gives the same launch price of 169.90 EUR. No US dollar launch price is stored, because the archived Corsair US page shows $184.99 from November 2025 to January 2026 and $169.99 from February 2026, while Hardware Busters gives an MSRP of $170 excluding VAT.","variants":"EU row: model CP-9020299-EU with the EUR price."}},{"url":"https://www.cybenetics.com/evaluations/psus/2879/","kind":"measurement","accessed":"2026-10-15","fields":["oem_manufacturer","alpm_support","rail_12v_design","rail_12v_current_a","rail_12v_power_w","minor_rails_combined_w","rail_5vsb_current_a","ac_input_voltage","fan_size_mm","fan_bearing","fan_mode","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","protections"],"notes":{"oem_manufacturer":"DUT Information: OEM/ODM Great Wall. Parts description: Manufacturer (OEM) Great Wall.","alpm_support":"Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is checked.","rail_12v_design":"Power Specifications: one +12V column with 70.8 A and 850 W.","rail_12v_current_a":"Power Specifications table: +12V 70.8 A, 850 W.","rail_12v_power_w":"Power Specifications table: +12V 850 W.","minor_rails_combined_w":"Power Specifications table: one merged 120 W cell for 3.3V and 5V, 20 A each.","rail_5vsb_current_a":"Power Specifications table: 5VSB 3 A, 15 W.","ac_input_voltage":"Manufacturer-provided information: 100-240 Vrms, 5-10 A, 47-63 Hz.","fan_size_mm":"DUT Information: 140mm Fluid Dynamic Bearing Fan (NR140HP).","fan_bearing":"Parts description: Corsair NR140HP, 140mm, 12V, 0.33A, Fluid Dynamic Bearing Fan.","fan_mode":"DUT Information: Semi-Passive Operation checked (selectable). The typical load table shows the fan at 0 rpm from 10% to 50% load.","cybenetics_efficiency_115v":"Report 25PS2879, lab ID CR85002879, sample serial A9H1D518401FMC, received Jun 13, 2025, tested Jul 7, 2025, issued Jul 10, 2025. The model name is RM850x Shift (ATX v3.1). The Cybenetics database shows ETA Platinum at 115V. Corsair advertises Cybenetics Gold without a voltage, and Hardware Busters says Corsair used a lower badge on purpose. The report wins.","cybenetics_efficiency_230v":"The Cybenetics database shows ETA Platinum at 230V.","cybenetics_noise_115v":"LAMBDA A++ at 115V in the Cybenetics database. Corsair's page prints Cybenetics Noise A+, which the report does not support.","cybenetics_noise_230v":"LAMBDA A++ at 230V in the Cybenetics database.","measured_avg_efficiency_115v_pct":"Average over more than 1450 load combinations at 115V, ambient 28-32 C. Hardware Busters prints 90.080% for 115V and 92.076% for 230V, which differ slightly from the report page.","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. At 230V it is 0.966.","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 230V average is 10.97 dBA. The fan stays at 0 rpm up to 50% load.","measured_noise_full_load_115v_dba":"Typical load tests at 115V, 100% load row: 32.8 dB(A) at 1064 rpm fan speed, ambient about 30 C. At 230V it is 32.2 dB(A) at 1037 rpm.","measured_vampire_power_115v_w":"Standby power consumption at 115V with no load on +5VSB: 0.0405 W. At 230V it is 0.0818 W.","measured_hold_up_time_ms":"Hold-Up Time and PWR_OK Signal: hold-up time 24.50 ms, AC loss to PWR_OK 19.70 ms, PWR_OK inactive to DC loss 4.80 ms, at maximum continuous load. The report names no input voltage.","measured_ripple_12v_mv":"Non-accredited. 12V ripple at full load at 115V. At 230V it is 22.45 mV.","measured_load_regulation_12v_pct":"Non-accredited. 12V load regulation at 115V. At 230V it is 0.57%.","cables":"Cables and Connectors table: ATX 24 pin 610 mm 16-20AWG, 2 x 4+4 pin ATX12V 650 mm 18AWG, 2 x 6+2 pin PCIe 650 mm 18AWG, 2 x 2x 6+2 pin PCIe 650 mm 18AWG, 12+2 pin PCIe 650 mm (600W) 16-24AWG, 3 SATA cables with 9 plugs in total 18AWG and 1 Molex cable with 4 plugs 18AWG, no in-cable capacitors. The 16-24AWG range of the 12V-2x6 cable includes the sideband wires, so no gauge is stored for it. The 18AWG gauge of the PCIe cables is stored for the 2x 8-pin cable too.","protections":"Protection Features (Manufacturer): OPP, +12V OCP, OTP, SCP, surge protection and inrush protection ticked, fan failure protection not present."}},{"url":"https://hwbusters.com/psus/corsair-rm850x-shift-atx-v3-1-psu-review/","kind":"review_site","accessed":"2026-10-15","fields":["oem_manufacturer","alpm_support","rail_12v_design","weight_kg","fan_mode","cables","protections","minor_rails_combined_w"],"notes":{"oem_manufacturer":"Technical specifications: Manufacturer (OEM) Great Wall.","alpm_support":"Technical specifications: Alternative Low Power Mode support Yes.","rail_12v_design":"Technical specifications: Number of 12V rails 1.","weight_kg":"Technical specifications: 1.60 kg (3.53 lb). Corsair's page prints 2kg and its US shop page showed 2.89kg in November 2025, which are packed weights and are not stored.","fan_mode":"Technical specifications: Semi-Passive Operation yes (selectable). Corsair's guide says the fan speed knob sets the speed once the fan starts and does not turn Zero RPM mode off, so no fan mode switch is stored.","cables":"Cables page: the modular panel has eleven sockets including one native 12V-2x6 header, and all cables are debossed PVC. Review date November 16, 2025.","protections":"Protection Features page: OCP on 12V, 5V, 3.3V and 5VSB, OPP, OTP, SCP, UVP (90V full load and 80V no damage), NLO and SIP (surge MOV, inrush NTC and bypass relay) all shown. Fan failure protection is not present.","minor_rails_combined_w":"Technical specifications: Power 5V + 3.3V 120W."}},{"url":"https://www.amazon.com/dp/B0FPGD7XDK","kind":"retailer","accessed":"2026-10-15","fields":["gtins","model_numbers","colors","variants"],"notes":{"gtins":"Item details: UPC 840440484981 and Mfr Part Number CP-9020299-NA. The check digit is valid.","model_numbers":"Item details: Model Number CP-9020299-NA.","colors":"Title: CORSAIR RM850x Shift (2025) Fully Modular ATX Power Supply, Black.","variants":"US row: model CP-9020299-NA with UPC 840440484981. The listing carries a packed weight of 3.3 pounds, which is not stored."}},{"url":"https://webshop.netip.dk/corsair-rm850x-shift-80-gold/cat-p/c/p1006311000","kind":"retailer","accessed":"2026-10-15","fields":["gtins","model_numbers","variants"],"notes":{"gtins":"SKU CP-9020299-EU with EAN 0840440484974. Multitronic and DCS list the same code. Komputronik and Datafox also list 840006677284 for the same part number, which has a valid check digit too. The code that matches the US UPC prefix is stored.","model_numbers":"SKU CP-9020299-EU.","variants":"EU row: model CP-9020299-EU with GTIN 840440484974."}},{"url":"https://www.scan.co.uk/products/850w-corsair-rm850x-shift-fully-modular-cybenetics-gold-pcie-51-single-rail-708a-140mm-fan-a","kind":"retailer","accessed":"2026-10-15","fields":["gtins","model_numbers","variants"],"notes":{"gtins":"Scan lists manufacturer code CP-9020299-UK with GTIN 840006679448. The check digit is valid. This is the only source for the UK code.","model_numbers":"Scan lists CP-9020299-UK.","variants":"UK row: model CP-9020299-UK with GTIN 840006679448."}}],"fields_filled":52,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}