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Cooler Master MWE Gold 850 V2 Full Modular vs CORSAIR RM850e (2025)

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Product A: Cooler Master

MWE Gold 850 V2 Full Modular

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Product B: CORSAIR

RM850e (2025)

49 of 66 known

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Only differences

ACooler Master MWE Gold 850 V2 Full Modular

BCORSAIR RM850e (2025)

General

5 of 12 differ

Series

MWE Gold1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Series MWE Gold Series.

RMe1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

MPE-8501-AFAAG, MPE-8501-AFAAG-US, MPE-8501-AFAAG-EU1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Model MPE-8501-AFAAG. The US store data carries the SKU MPE-8501-AFAAG-US. Retailers list the EU code MPE-8501-AFAAG-EU.6Retailer pageamazon.com/dp/B08M9M6DB9Read 14 October 2026Item details: Model Number and Mfr Part Number MPE-8501-AFAAG-US.

CP-9020296-NA, CP-9020293-NA1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

GTIN / EAN

884102078590, 4719512106280, 884102078620, 47195121063102Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Package Information table: EAN and UPC per cable type. US 4719512106280 and 884102078590, EU 4719512106310 and 884102078620. The sheet lists 11 cable types in all. Only the US and EU rows are stored.6Retailer pageamazon.com/dp/B08M9M6DB9Read 14 October 2026Item details: UPC 884102078590, GTIN 00884102078590. The code has a valid check digit and matches the product sheet's US row.

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AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

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Status

Available1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026US store page shows In Stock at 99.99 USD on 2026-10-14. Amazon US also lists the -US model.6Retailer pageamazon.com/dp/B08M9M6DB9Read 14 October 2026Amazon US listing for MPE-8501-AFAAG-US with 2,157 ratings at 4.5 stars and best sellers rank 80 in Computer Power Supplies in October 2026.

Available1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

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Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

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MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

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ColoursiThe maker's own colour names

Not available

Black, White1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 20262Maker product pagecorsair.com/us/en/p/psu/cp-9020293-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-white-cp-9020293-naRead 14 October 2026The white edition has SKU CP-9020293-NA and the same specs. It adds a dual-color 12V-2x6 connector.

Form factoriThe physical size standard that decides what fits in the case. An ATX unit is 150 × 86 mm at the back. An SFX unit is 125 × 63.5 mm.

ATX1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Form Factor ATX.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026

ATX1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

ATX versioniThe ATX12V design guide revision the maker claims compliance with. A 16-pin GPU cable alone does not establish ATX 3.x. A Cybenetics report that withholds its ATX badge does not change the maker's claim. It goes in the source note.

ATX 2.x1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: ATX Version ATX 12V Ver. 2.41. This is the original V2 and not the ATX 3.x refresh.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: ATX Version ATX 12V Ver. 2.41.

ATX 3.11Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

PCIe CEM versioniThe PCI Express card power revision the maker claims, as printed next to the ATX version. It sets the GPU power connector rules. It is not a slot speed. A reviewer's statement is not enough.

Not available

PCIe 5.11Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Page says PCIe 5.1 compatible.

Modular cablesiFull means every cable detaches. Semi means some cables are fixed, usually the 24-pin and CPU cables.

Fully modular1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Modular Fully Modular.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026

Fully modular1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

Built by (OEM)iThe company that designed and built the unit for the brand, such as CWT or FSP. As named by the maker, a teardown review or a Cybenetics report.

Huizhou Xin Hui Yuan Tech (Fusion Power)4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026DUT Information: OEM/ODM Huizhou Xin Hui Yuan Tech (Fusion Power).

HEC4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026DUT Information: OEM/ODM HEC. Parts description: Manufacturer (OEM) HEC.

Power

2 of 9 differ

Rated continuous poweriThe continuous DC output the maker rates the unit for, such as 850. Peak or power excursion figures are not stored here.

850W1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Watts 850W.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026DC output table: total power 850W. The sheet prints Noise at 20, 50 and 100 percent load and efficiency of 90 percent at typical load. Those maker figures are not stored.

850W1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

Full power rated up toiThe ambient temperature up to which the maker rates full continuous power, such as 50 °C. A review table that prints 0-50 °C with no maker source is not enough. An operating temperature range that does not say full power is not enough. A maker table with load steps gives the full-load row, such as 40 °C at full load next to 50 °C at 80 percent load. A temperature that a Cybenetics report marks as manufacturer-provided counts as a maker statement.

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12V rail designiHow the maker splits +12V over-current protection. Switchable means the user picks single or multi rail with a switch or in software.

Single rail4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Power Specifications: one +12V column with 70.8A. The sheet also prints one +12V column.

Single rail5Reviewhwbusters.com/psus/corsair-rm850e-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Number of 12V rails 1.6Retailer pagescan.co.uk/products/850w-corsair-rm850e-fully-modular-cybenetics-gold-pcie-51-single-rail-708a-120mm-fan-atx-31-psuRead 14 October 2026Specification list: single +12V rail, 70.8A (Rail 1), rails 2 to 6 not applicable.

+12V max currentiHighest combined current on +12V from the maker's power table. For a multi-rail unit this is the combined total, not one rail.

70.8A2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026DC output table: +12V 70.8A with 849.6W. The sheet prints +3.3V 20A, +5V 20A, -12V 0.3A and +5Vstb 3A.

70.8A3Owner's manualcorsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-2025Read 14 October 2026RM850e table: +12V 70.8A, 850W, model RPS0216, Corsair SKU CP-9020296/CP-9020293. The black product page prints 62.5A, which is the RM750e figure. The white page prints 70.8A.

+12V max poweriHighest combined power on +12V from the maker's power table.

849.6W2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026DC output table: +12V 849.6W. Total power 850W.

850W3Owner's manualcorsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-2025Read 14 October 2026RM850e table: +12V 70.8A, 850W.

+3.3V and +5V combined poweriThe combined limit for the +3.3V and +5V rails from the maker's power table. A table that prints the same figure under both rails, as be quiet! does, shows one shared limit, so the figure is stored once and not added.

100W2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026DC output table: 100W for +3.3V and +5V together.

150W1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Power table lists +3.3V 20A and +5V 20A with 150W. The quick start guide lists 110W for the same row, which looks like a value copied from the RM650e and RM750e. Cybenetics, Hardware Busters and the white edition page all say 150W.5Reviewhwbusters.com/psus/corsair-rm850e-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Power 5V + 3.3V 150W.

+5V standby currentiHighest current on the +5VSB standby rail. It powers USB charging and wake functions while the PC is off.

3A2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026DC output table: +5Vstb 3A, 15W.

3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

AC input voltageiThe rated AC input range, such as 100 to 240 V.

Lowest100Highest240V1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Input Voltage 100-240V, Input Current 12-6A, Input Frequency 50-60Hz.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026AC input 100-240V~ 12-6A 50-60Hz.

Lowest100Highest240V1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026AC input 100-240V, 47-63 Hz.

Alternative low power mode (ALPM)iThe maker or a Cybenetics report states support for the ATX alternative low power mode used by Modern Standby.

Yes4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.

Yes4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.

Certifications

3 of 5 differ

80 PLUS ratingiThe 80 PLUS level. When the 80 PLUS listing or certificate and the maker claim differ, store the listing level and put the claim and test voltage in the source note. When a model has several 80 PLUS entries, such as a newer test at a higher level, use the newest entry that matches the current maker documents.

80 PLUS Gold5Certification listclearesult.com/80plus/certified-psus/Cooler-Master/MPE-8501-AFAAG-115V-Internal-20951Read 14 October 202680 PLUS ID 20951, model MPE-8501-AFAAG, ATX12V, 850 W, 115V Internal, Gold, test date 2020-03-18, rated input 12-6 A, which matches the sheet. The certificate lists no sample serial. The maker also says 80 PLUS Gold.

Not available

Cybenetics efficiency at 115ViThe Cybenetics ETA level from the 115V test. The Cybenetics report wins over the maker's claim.

Cybenetics Gold4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Report 23PS2259A, certification ID 252259, issued Oct 13, 2023. It is named MWE Gold 850 V2 (GX Gold 750) (#2), which is a second sample of the fully modular 850W unit: rated 850 W, fully modular, 12-6 A. An earlier report, 20PS1769A issued Dec 22, 2020 and named MWE Gold 850 V2 (GX Gold 850), also rates Gold at both voltages. The newer report is stored. The database list prints Gold at 115V and 230V for both reports.

Cybenetics Gold1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026The page says Cybenetics Gold without a voltage. The Cybenetics report of the same model shows Gold at both 115V and 230V.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Report 24PS2630A, certification ID 252630, issued Nov 4, 2024. ETA Gold at 115V. The model name in the database is RM850e (ATX v3.1). The results apply to both the black and white variants.

Cybenetics efficiency at 230ViThe Cybenetics ETA level from the 230V test. The 230V thresholds are higher, so the level can differ from the 115V level. The Cybenetics report wins over the maker's claim.

Cybenetics Gold4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026The ETA badge shows Gold at 230V, as the database list prints.

Cybenetics Gold1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026The page says Cybenetics Gold without a voltage. The Cybenetics report of the same model shows Gold at both 115V and 230V.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026ETA Gold at 230V.

Cybenetics noise at 115ViThe Cybenetics LAMBDA level from the 115V test. A++ is the quietest. The Cybenetics report wins over the maker's claim.

Standard++4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026The LAMBDA badge shows Standard++ at 115V, with 31.66 dBA average noise. The 2020 report shows Standard+ at 115V with 35.18 dBA. Amazon US prints Cybenetics Gold and Noise Standard+ in its title.

A1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: Cybenetics Noise A. The Cybenetics report shows A at both voltages.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026LAMBDA A at 115V.

Cybenetics noise at 230ViThe Cybenetics LAMBDA level from the 230V test. The Cybenetics report wins over the maker's claim.

Standard++4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026The LAMBDA badge shows Standard++ at 230V, with 31.75 dBA average noise. The 2020 report shows Standard++ with 34.18 dBA.

A1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: Cybenetics Noise A. The Cybenetics report shows A at both voltages.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026LAMBDA A at 230V.

Measured

10 of 10 differ

Average efficiency at 115V (measured)iAverage efficiency over the whole load range at 115V input, from more than 1450 load combinations in the Cybenetics method. It is not the peak efficiency or the efficiency at 50% load.

88.338%4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Average over more than 1450 load combinations at 115V. Sample received Sep 27, 2023, tested Oct 12, 2023, no serial number printed. Ambient 28-32 C. The 2020 report prints 88.571.

88.568%4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Average over more than 1450 load combinations at 115V. Tested Nov 4, 2024 on sample serial A9D9F4420002EL. Ambient 28-32 C.

Average efficiency at 230V (measured)iThe same average efficiency at 230V input.

90.459%4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Average over more than 1450 load combinations at 230V. The 2020 report prints 90.720.

90.783%4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Average over more than 1450 load combinations at 230V.

Light-load efficiency at 115V (measured)iEfficiency at a 10 W load for units up to 500 W, or at a 2% load for larger units, at 115V input. This is the ATX light-load test.

64.654%4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. The 2020 report prints 63.292.

66.87%4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Efficiency at 2% load (more than 500 W unit) at 115V.

Average power factor at 115V (measured)iAverage power factor over the whole load range at 115V input. 1 is the best possible value.

0.9894Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.954.

0.9824Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Average over more than 1450 load combinations at 115V.

Average noise at 115V (measured)iAverage noise over the whole load range at 115V input in the Cybenetics method, at about 30 °C ambient. It is not the noise at full load.

31.66dB(A)4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Average over more than 1450 load combinations at 115V, ambient 28-32 C, Bruel and Kjaer sound analyzer. The 230V average is 31.75 dBA.

22.81dB(A)4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 22.84 dBA.

Noise at full load at 115V (measured)iNoise at 100% load at 115V input in the Cybenetics typical load tests. That row often runs at about 45 °C intake. The intake temperature and the fan speed go in the source note. Lower is better.

44.5dB(A)4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Typical load tests at 115V, 100% load row: 44.5 dB(A) at 2135 rpm fan speed, ambient about 30 C. The 2020 report prints 43.3 dB(A) at 2056 rpm for its 100% load test.

42.2dB(A)4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Typical load tests at 115V, 100% load row: 42.2 dB(A) at 1724 rpm fan speed, ambient about 30 C.

Standby power with no load at 115V (measured)iPower the unit draws from the wall with the PC off and nothing drawn from +5VSB, at 115V input.

0.0585W4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0585 W. At 230V it is 0.1320 W. The 2020 report prints 0.0650 W.

0.049W4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Standby power consumption at 115V with no load on +5VSB.

Hold-up time (measured)iHow long the outputs stay in regulation after AC power is lost, at maximum continuous load, as printed in the Cybenetics report. The report names no input voltage. The AC loss to PWR_OK time goes in the source note. Higher is better.

22.4ms4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 22.40 ms, AC loss to PWR_OK 19.50 ms, PWR_OK inactive to DC loss 2.90 ms, at maximum continuous load. The report names no input voltage. The 2020 report prints 20.6 ms. The maker prints more than 16 ms at 100% load.

18ms4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 18.0 ms, AC loss to PWR_OK 15.5 ms, at maximum continuous load. Report 2630.

12V ripple at full load (measured)iPeak-to-peak ripple on the +12V rail at full load and 115V input. Lower is better.

29.21mV4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 30.79 mV. The 2020 report prints 28.25 mV.

36.19mV4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 36.77 mV.

12V load regulation (measured)iHow far the +12V voltage moves between light and full load at 115V input. Lower is better.

0.25%4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Non-accredited measurement. 12V load regulation at 115V. At 230V it is 0.26%. The 2020 report prints 0.28%.

0.83%4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Non-accredited measurement. 12V load regulation at 115V. The 230V figure is also 0.83%.

Cables and connectors

6 of 7 differ

CablesiOne row per kind of cable that runs from the PSU to a device. Connector is the plug at the device end. Count is the number of those plugs over all cables in the row. Length runs from the PSU end to the first plug. Adapters that plug into other cables are left out. Use 16-pin PCIe when the maker names a 16-pin GPU cable without saying 12V-2x6 or 12VHPWR. A cable from a 12V-2x6 socket on the PSU to 8-pin plugs is a cable, not an adapter, and counts as PCIe 8-pin. When the maker's documents name one GPU cable both 12VHPWR and 12V-2x6, use 16-pin PCIe and name both in the source note. Cables of one connector kind with different lengths or wire gauges get one row each.

ACooler Master MWE Gold 850 V2 Full Modular

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge
ATX 24-pin (20+4)	1	1	600	18AWG
CPU 8-pin (EPS, 4+4)	1	1	610	18AWG
CPU 8-pin (EPS, 4+4)	1	1	660	18AWG
PCIe 8-pin (6+2)	4	2	560	16-18AWG
SATA power	12	3	510	18AWG
4-pin Molex	4	1	500	18AWG

Source2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Connectors: ATX 24 pin x1, EPS 4+4 pin x1, EPS 8 pin x1, SATA x12, Peripheral 4 pin x4, PCI-e 6+2 pin x4. The sheet gives no cable counts, lengths or gauge. Those come from the Cybenetics cable table, which has the same connector counts.4Measurementcybenetics.com/evaluations/psus/2259Read 14 October 2026Cables and Connectors table: ATX 20+4 pin 600 mm 18AWG, 4+4 pin EPS 610 mm 18AWG, 8 pin EPS 660 mm 18AWG, two 6+2 pin PCIe cables with 4 plugs (560 mm then 125 mm) 16-18AWG, three SATA cables with 12 plugs (510 mm then 3 x 120 mm) 18AWG, one 4-pin Molex cable with 4 plugs (500 mm then 3 x 120 mm) 18AWG. The 2020 report has slightly different lengths and gauges, such as an ATX cable of 610 mm at 18-22AWG. The sheet's connector counts match both.

BCORSAIR RM850e (2025)

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	610	18-20AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	750	18AWG	Not available
PCIe 8-pin (6+2)	3	2	650	16-18AWG	Not available
12V-2x6	1	1	650	Not available	600
SATA power	6	2	450	18AWG	Not available
4-pin Molex	2	1	450	18AWG	Not available

Source1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Cable listing table: lengths 610 mm (24-pin), 750 mm (EPS), 650 mm (12V-2x6, 12V-2x6 to dual 8-pin, PCIe 8-pin), SATA 450 mm to the first plug then 100 mm spacing. Tolerance 10 mm. PCIe 8-pin is 1 single cable plus 1 cable with two 8-pin plugs, so 3 plugs on 2 cables. The 12V-2x6 cable is described as 600W capable. The SATA row covers a 4-plug SATA cable and a 2 SATA and 2 PATA cable. The two 4-pin plugs sit on the SATA and PATA cable, so the molex row takes that cable's 450 mm to its first plug. The quick start guide text lists 2 single PCIe 8-pin cables for this model, which does not match this table, the Cybenetics report or the Scan listing. The PSU side has one 12V-2x6 socket and three CPU/PCIe sockets (product photo), so the dual 8-pin cable takes the 12V-2x6 socket and cannot be used together with the native 12V-2x6 cable.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Cables and Connectors table gives wire gauge per cable: ATX 18-20AWG, EPS 18AWG, 6+2 PCIe 16AWG, 2 x 6+2 PCIe 16-18AWG, 12+2 pin PCIe (600W) 16-24AWG, SATA and Molex 18AWG. The 16-24AWG range for the 12V-2x6 cable includes the thin sideband wires, so no gauge is stored for it.

CPU (EPS) connectorsi8-pin or 4+4-pin CPU power plugs.

2=CalculatedFrom Cables

2=CalculatedFrom Cables

PCIe 8-pin connectorsi8-pin or 6+2-pin GPU power plugs. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

4=CalculatedFrom Cables

3=CalculatedFrom Cables

16-pin GPU connectorsiNative 16-pin GPU power plugs: 12V-2x6, 12VHPWR and 16-pin cables of unstated revision. Adapters are not counted. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

0=CalculatedFrom Cables

1=CalculatedFrom Cables

SATA power connectors

12=CalculatedFrom Cables

6=CalculatedFrom Cables

4-pin Molex connectors

4=CalculatedFrom Cables

2=CalculatedFrom Cables

Cable styleiHow the modular cables are made. Mixed means some cables are sleeved and others flat, such as a sleeved 24-pin cable with flat other cables. From the maker page or a review photo page.

Flat1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Full Modular Cabling: a set of flat black cables.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Features: full modular flat, black cables.

Embossed or debossed flat1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Cable listing: every cable is Cable Type Debossed.

Fan

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Fan sizeiFrame size of the cooling fan, such as 120, 135 or 140.

120mm1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Fan Size 120mm. Fan Speed 1500 RPM.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: Fan Size 120mm, Fan Speed 1500 RPM.

120mm1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

Fan bearingiUse the maker's bearing name. FDB and S-FDB are fluid dynamic. HDB is hydrodynamic. Noctua SSO and SSO2 are SSO. Corsair Magnetic Dome is magnetic dome. A brand bearing name that fits no option is Other.

Hydrodynamic (HDB)1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Fan Bearing HDB. The page calls it a 120mm HDB fan with a Hydro Dynamic bearing. The Cybenetics report calls the Hong Hua HA1225H12F-Z an FDB fan.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: Fan Bearing HDB. Features: 120mm Hydro Dynamic Fan bearing.

Rifle1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026120mm rifle bearing fan.

Fan modeiSemi-passive means the fan stops at low load, often sold as zero RPM, hybrid or 0 dB mode. Fanless means the unit has no fan.

Not available

Semi-passive1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: Zero RPM Mode Yes.

Fan mode switchiA button, switch or software setting lets the user turn the semi-passive mode off so the fan always spins. A unit without a semi-passive mode, whose fan the maker says always spins, has no switch, so it is false.

Not available

Not available

Protection and parts

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ProtectionsiProtections the maker lists, or a retailer spec table copies from the maker, plus protections the Cybenetics protection tests show working (UVP, NLO, SIP). The Cybenetics manufacturer list has no OVP or UVP row, so do not build the list from it alone. A protection that is not listed may still exist. No-load covers no-load operation and no-load protection. Fan failure is a maker's fan failure protection or fan safeguard, also when the Cybenetics manufacturer block lists it.

Over-voltage (OVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), Over-current (OCP), Under-voltage (UVP)1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Protections UVP / OVP / OPP / OTP / SCP / OCP.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: Protections OVP / OPP / OTP / SCP / OCP / UVP.

Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)3Owner's manualcorsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-2025Read 14 October 2026Safety and Protection section lists OVP, UVP, OCP, OTP, SCP and OPP.4Measurementcybenetics.com/evaluations/psus/2630Read 14 October 2026Protection Features (Manufacturer) lists Surge Protection and Inrush Current Protection, which the quick start guide leaves out. The report also lists OPP, +12V OCP, OTP and SCP. The protection tests tick NLO.

All-Japanese capacitorsiThe maker states that every electrolytic capacitor is from a Japanese maker. A Japanese bulk capacitor alone is not enough. A spec row such as "Japanese capacitors" that names no exception counts.

Not available

Not available

MTBF (claimed)iThe maker's mean time between failures, such as 100000. An MTTF figure for the whole unit counts too. An MTTF for the fan alone does not. The test temperature goes in the source note.

100,000h1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: MTBF >100,000 Hours. The figure is a minimum and the test temperature is not stated.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: MTBF >100,000 hours.

100,000h1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: MTBF Hours 100,000 hours. The test temperature is not stated.

Monitoring and lighting

None of 4 known

Software monitoringiThe unit reports power, temperature or fan data to PC software over a USB or internal connection.

Not available

Not available

SoftwareiThe maker's software for monitoring or control.

Not available

Not available

Built-in power displayiA screen on the unit that shows live power draw or other readings.

Not available

Not available

RGB lighting

Not available

Not available

Dimensions and weight

2 of 2 differ

DimensionsiBody without cables. Width and height are the back face with the AC inlet. Depth is the length into the case, which decides case fit.

Width150Height86Depth160mm(5.9 × 3.4 × 6.3 in)1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Specifications: Dimensions (L x W x H) 160 x 150 x 86 mm. Depth 160, width 150, height 86.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Specifications: Dimensions (L x W x H) 160 x 150 x 86mm. The sheet prints a net weight of 2.17 kg. It sits under package information and probably counts the cables, so it is not stored.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: 140x150x86. The quick start guide gives 140 mm (L) x 150 mm (W) x 86 mm (H). Depth is 140 mm and the back face is 150 x 86 mm.

WeightiWeight of the unit alone. Use the Hardware Busters figure on hwbusters.com when the maker states none, not a copy on another site. Maker weights that include cables or the box, such as Corsair's, and retailer packed weights are not stored. A net weight counts unless the maker says it includes the cables.

Not available

1.53kg(3.4 lb)5Reviewhwbusters.com/psus/corsair-rm850e-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: 1.53 kg. The review does not say whether cables are included. Corsair's 2 kg figure most likely includes the cables, so it is not stored.

In the box

1 of 1 differ

In the boxiItems supplied with this exact model, verbatim. The AC power cord differs per region.

MWE850, Power Cord, 4 Screws, Connectors and Manual6Retailer pageamazon.com/dp/B08M9M6DB9Read 14 October 2026Item details: Built-In Media MWE850, Power Cord, 4 Screws, Connectors and Manual. It is the retailer's line for the US model. The AC power cord differs per region.

Power Supply, AC Cable, DC Cables, Cable Ties, Mounting Screws, Safety Leaflet3Owner's manualcorsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-2025Read 14 October 2026RM850e Specifications, Package Contents.

Links

Not compared

Product page

www.coolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.html1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026

www.corsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-na1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026

Spec sheet

coolermaster.egnyte.com/dl/jm4eNcQGZ82Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026

Not available

Manual

coolermaster.egnyte.com/dl/f0fHRjTaQJ3Owner's manualcoolermaster.egnyte.com/dl/f0fHRjTaQJRead 14 October 2026User guide for the MWE Gold V2 550, 650, 750 and 850, Ver 1.0 2020/09. It has pin layouts and safety text and no spec table.

www.corsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-20253Owner's manualcorsair.com/explorer/diy-builder/power-supply-units/corsair-rme-series-2025Read 14 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

5years1Maker product pagecoolermaster.com/en-us/products/mwe-gold-850-v2-full-modular.htmlRead 14 October 2026Page: 5 year manufacturing warranty from the date of purchase. The US page names no market for the warranty.2Maker spec sheet (PDF)coolermaster.egnyte.com/dl/jm4eNcQGZ8Read 14 October 2026Features: 5 year factory warranty from purchase date.3Owner's manualcoolermaster.egnyte.com/dl/f0fHRjTaQJRead 14 October 2026Warranty section: a minimum 5-year hardware limited warranty from the date of purchase.6Retailer pageamazon.com/dp/B08M9M6DB9Read 14 October 2026Item details: Warranty Description 5 year manufacturer.

7years1Maker product pagecorsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-naRead 14 October 2026Tech Specs tab: Warranty 7 Year. Page is corsair.com US, so the market is US.

Both are also in the API. Back to all power supplies.