Power supplies / Compare

ASRock Steel Legend SL-850G vs MSI MAG A850GL PCIE5

A

Product A: ASRock

Steel Legend SL-850G

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B

Product B: MSI

MAG A850GL PCIE5

52 of 66 known

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Only differences

AASRock Steel Legend SL-850G

BMSI MAG A850GL PCIE5

General

4 of 12 differ

Series

Steel Legend3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-850g-850w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 14 October 2026The listing copies ASRock's Steel Legend text and spec table.

Not available

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

SL-850G, SL-850GW6Retailer pagegeizhals.de/asrock-steel-legend-sl-g-atx-3-1-v184341.htmlRead 14 October 2026Geizhals lists the SL-850G with the manufacturer number 90-UXS085-GFEAAA, stored as an alias. The SL-850GW is the white model in the 80 PLUS list, the Cybenetics report and retail listings.

MAG A850GL PCIE5, 306-7ZP8A11-CE01Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Datasheet title MAG A850GL PCIE5. The later MAG A850GL PCIE5 II has its own order code and is a different product.4Maker product pagede-store.msi.com/products/mag-a850gl-pcie5Read 16 October 2026MSI e-shop Germany: order code 306-7ZP8A11-CE0.

GTIN / EAN

Not available

47113770842534Maker product pagede-store.msi.com/products/mag-a850gl-pcie5Read 16 October 2026MSI e-shop Germany: EAN 4711377084253 (gtin13 in the page data).8Retailer pagestore.fluidone.com/msi-mag-a850gl-pcie5-power-supply-unit-850-w-20-4-pin-atx-atx-black-mag-a850gl-pcie5Read 16 October 2026EAN 4711377084253 for SKU MAG A850GL PCIE5, the same EAN as the MSI German e-shop.

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

Not available

19 July 20233Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026MSI Japan announced MAG A850GL PCIE5 and MAG A750GL PCIE5 on 2023-07-19. The Japanese list price was 18,980 JPY including tax, which is not stored.

Status

Available3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-850g-850w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 14 October 2026UK retailer listing shows the unit in stock in October 2026.6Retailer pagegeizhals.de/asrock-steel-legend-sl-g-atx-3-1-v184341.htmlRead 14 October 202621 offers listed.

Available4Maker product pagede-store.msi.com/products/mag-a850gl-pcie5Read 16 October 2026Page data shows the offer as in stock on 2026-10-16.

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

Not available

Not available

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

Not available

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

Not available

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

Not available

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

Not available

Not available

ColoursiThe maker's own colour names

Steel Black, Steel White3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-850g-850w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 14 October 2026ASRock's series text on the page: available in Steel Black and Steel White. SL-850G is the black model and SL-850GW the white model.4Reviewfunkykit.com/reviews/power-supplies/asrock-steel-legend-sl-850g-850w-power-supply-reviewRead 14 October 2026Page 2 quotes ASRock: the series is available in Steel Black and Steel White.

Black8Retailer pagestore.fluidone.com/msi-mag-a850gl-pcie5-power-supply-unit-850-w-20-4-pin-atx-atx-black-mag-a850gl-pcie5Read 16 October 2026Spec sheet: Product colour Black. The listing text still says ATX 3.0 compatible and native PCIe 5.0.9Spec databasegeizhals.de/msi-mag-a850gl-pcie5-850w-atx-3-0-a2979848.htmlRead 16 October 2026Farbe schwarz. MSI also sells a separate MAG A850GL PCIE5 WHITE under its own order code. It is not stored here because its datasheet could not be read.

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.

ATX2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3 gives the 150 x 150 x 86 mm body of an ATX unit.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026DUT Information: Type ATX12V.

ATX1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Dimensions (DxWxH) 140 x 150 x 86 mm. The back face is 150 x 86 mm, the standard ATX size. Cybenetics DUT Information prints Type ATX12V.

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 3.12Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Back of the retail box (photo on page 2): Meets ATX 3.1 Specification. The overview says ATX 3.1 and PCIe 5.1 compliant.

ATX 3.11Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Feature list in the 2025 sheets (US, global, UK and AU, generated 2025-03 to 2025-12): ATX 3.1 ready, native PCIe 5.1 dual-color 16-pin cable. The 2024 JP and CA sheets say ATX 3.0 compatible with a native PCIe 5.0 connector. The specification table and the connector counts are the same in both versions. The Japanese 2025 sheet says the same product described as ATX 3.0 also supports ATX 3.1. The German e-shop page and Hardware Busters still say ATX 3.0.2Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/jp/MAG-A850GL-PCIE5.pdfRead 16 October 2026Japanese 2025 sheet: native 16-pin connector for ATX 3.1, and the same product described as ATX 3.0 also supports ATX 3.1.9Spec databasegeizhals.de/msi-mag-a850gl-pcie5-850w-atx-3-0-a2979848.htmlRead 16 October 2026Note: introduced as ATX 3.0 and PCIe 5.0 compatible, now also advertised as ATX 3.1 and PCIe 5.1 compatible. The page names the 16-pin cable 12V-2x6 and 600W, which the maker does not.

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.

PCIe 5.12Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Back of the retail box: Native Durable 105C PCIe CEM 5.1 12+4-pin Cable.

PCIe 5.11Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 20262025 sheets: native PCIe 5.1 dual-color 16-pin cable. The earlier sheets say PCIe 5.0. The specification table still names the connector PCI-E 5.0 (16 pin).

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

Fully modular2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Overview: Fully Modular design.

Fully modular1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Modular Yes (full modular).

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.

HEC2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 4: this power supply is an OEM partner design from HEC.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026DUT Information and Parts Description: OEM/ODM HEC.

Channel Well Technology (CWT)5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026DUT Information and Parts Description: OEM/ODM CWT, platform GPX. Hardware Busters names the company Channel Well Technology.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Technical specifications: Manufacturer (OEM) CWT (GPX platform).

Power

4 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.

850W7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026DUT Information: Rated Power 850 W. The Power Specifications table gives a total maximum power of 850 W.

850W1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Power Watt 850W. Total power 850W. Power excursion 1700W up to 200% of rated power for 100 microseconds is not stored.

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.

Not available

Not available

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 rail4Reviewfunkykit.com/reviews/power-supplies/asrock-steel-legend-sl-850g-850w-power-supply-reviewRead 14 October 2026Review text quotes ASRock: a powerful +12V single rail at 70.9A, up to 850W.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Power Specifications table lists one +12V column, 70.9A.

Single rail3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: +12V single rail design, 70.5A for the 850W model.5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Power Specifications: one +12V column with 70.5A and 846W.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Technical specifications: Number of 12V rails 1.9Spec databasegeizhals.de/msi-mag-a850gl-pcie5-850w-atx-3-0-a2979848.htmlRead 16 October 2026+12V 70.5A (1 Schiene).

+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.

70.9A2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3: the unit delivers 70.9A on the main +12V rail. The retail box DC output table lists +12V 70.9A.

70.5A1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026DC output table: +12V 70.5A, 846W. The datasheet prints -12V 0.3A and 3.6W next to it.3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: 70.5A for the 850W model.

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

850W2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Retail box DC output table, combined power row: +12V 850W, total output power 850W.

846W1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026DC output table: +12V 846W. Total power 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.

120W2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3: +3.3V and +5V can each deliver 20A for a total of 120W. The retail box table lists 120W for the combined +3.3V and +5V power.

110W1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026DC output table: +5V 20A and +3.3V 20A with one 110W figure under both.

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

3A2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Retail box DC output table: +5Vsb 3A, 15W.

2.5A1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026DC output table: +5Vsb 2.5A, 12.5W.

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

Lowest100Highest240V2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Retail box specifications: AC input 100-240V, 50-60Hz, 10-5A.

Lowest100Highest240V1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Input Voltage Range 100~240 VAC. AC input 100-240V, 12A, 47-63Hz.

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

Yes7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is also checked.

Yes5Measurementcybenetics.com/evaluations/psus/2336Read 16 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 Platinum8Certification listclearesult.com/80plus/sites/80plus/files/manufacturer-certificate/ASROCK_SL-850G_850W_SOCE%207601_Report_0.pdfRead 14 October 202680 PLUS list entry ID 7601, model SL-850G, 850W, 80 PLUS Platinum, tested 10/10/2024 at 115V nominal and 60 Hz (typical efficiency at 50% load 92.18%). ASRock's box and spec sheet claim 80 PLUS Gold, so the listing level is stored. The SL-850GW has its own Platinum entry, ID 14023.

80 PLUS Gold6Certification listclearesult.com/80plus/sites/80plus/files/manufacturer-certificate/Micro-Star%20International%20Co.%2C%20Ltd._MAG%20A850GL%20PCIE5_850W_SOCE%205832.7_Report.pdfRead 16 October 202680 PLUS ID 5832.7, model MAG A850GL PCIE5, type ATX12V, rated 850 W, input 100-240 V 12 A, no serial number printed: Gold at 115V, average efficiency 90.06% and 91.22% at 50% load. The list dates the entry 2019-12-20, long before the 2023 launch, so the certificate was most likely renamed from an older MAG A850GL. It agrees with the maker's Gold claim.

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

Cybenetics Platinum7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Report 24PS2548A, certification ID 252548, tested and issued Aug 24, 2024. ETA Platinum at 115V (badge image). The report names the model SL-850G / SL-850GW and says the results apply to both the black and white models.

Cybenetics Platinum5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Report 24PS2336A, certification ID 252336, issued Jan 26, 2024, model MAG A850GL PCIE5. The ETA badge shows Platinum at 115V. The report predates the 2025 ATX 3.1 relabel. No serial number is printed. Received Jan 8, 2024, tested Jan 25, 2024. The 80 PLUS entry and MSI say Gold.

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 Platinum7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026ETA Platinum at 230V (badge image).

Cybenetics Platinum5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026The ETA badge shows Platinum 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.

A+7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026LAMBDA A+ at 115V (badge image). The measured average of 18.27 dBA fits A+. ASRock listings that print LAMBDA A refer to the series, so the report level is stored.

Standard+5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026The LAMBDA badge shows Standard+ at 115V.

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

A+7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026LAMBDA A+ at 230V (badge image). The measured average at 230V is 17.54 dBA.

Standard+5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026The LAMBDA badge shows Standard+ at 230V.

Measured

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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.

89.823%7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Sample received Aug 9, 2024.

89.044%5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C.

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

91.931%7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Average over more than 1450 load combinations at 230V.

91.304%5Measurementcybenetics.com/evaluations/psus/2336Read 16 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.

70.773%7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Efficiency at 2% load at 115V. The unit is above 500 W, so the 2% load applies. At 230V it is 72.136%.

68.015%5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. At 230V it is 67.867%.

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

0.9827Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.944.

0.9825Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.941.

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.

18.27dB(A)7Measurementcybenetics.com/evaluations/psus/2548Read 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 17.54 dBA.

38.49dB(A)5Measurementcybenetics.com/evaluations/psus/2336Read 16 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 38.02 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.

39.5dB(A)7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Typical load tests at 115V, 100% load row: 39.5 dB(A) at 1679 rpm fan speed, ambient about 30 C.

48.2dB(A)5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Typical load tests at 115V, 100% load row: 48.2 dB(A) at 2384 rpm fan speed, intake 45.91 C. Not used for certification.

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.

0.0556W7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Standby power consumption at 115V with no load on +5VSB. At 230V it is 0.1105 W.

0.0549W5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0549 W. At 230V it is 0.1190 W.

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.

18.2ms7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 18.2 ms, AC loss to PWR_OK 15.7 ms, at maximum continuous load. Report 2548.

17.2ms5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 17.2 ms, AC loss to PWR_OK 16.0 ms, PWR_OK inactive to DC loss 1.2 ms, at maximum continuous load. The report names no input voltage.

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

44.38mV7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 46.46 mV.

30.17mV5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 27.21 mV.

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

0.36%7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.41%.

0.54%5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Non-accredited measurement. 12V load regulation at 115V. At 230V it is 0.55%.

Cables and connectors

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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.

AASRock Steel Legend SL-850G

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	600	18AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	650	18AWG	Not available
PCIe 8-pin (6+2)	5	3	600	18AWG	Not available
12V-2x6	1	1	650	16AWG	600
SATA power	9	3	450	18AWG	Not available
4-pin Molex	3	1	450	18AWG	Not available

Source2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Retail box Cables Included drawing: 1x MB 20+4 pin 600 mm, 2x CPU 4+4 pin 650 mm, 1x PCIe 12V-2x6 650 mm, 3x PCIe 6+2 pin 600 mm, 3x SATA 450 mm then 120 mm then 120 mm, 1x PATA 450 mm then 120 mm then 120 mm. The box counts cables. The review photo of the cables and the Cybenetics table show that two of the three PCIe 6+2 cables carry two plugs each, so the unit has 5 PCIe 8-pin plugs on 3 cables. ASRock-derived spec lists print 3 for PCIe 6+2 pin connectors, which counts the cables. SATA is 9 plugs on 3 cables and the Molex row is 3 plugs on 1 cable, as in the ASRock spec list. Cybenetics prints 16-24AWG for the 12V-2x6 cable. That range includes the thin sideband wires, so the 16AWG power wire gauge is stored.4Reviewfunkykit.com/reviews/power-supplies/asrock-steel-legend-sl-850g-850w-power-supply-reviewRead 14 October 2026Page 3 lists 1 ATX 24-pin, 2 CPU 8-pin (4+4), 3 PCIe 8-pin (6+2) cables, 1 12VHPWR (12V-2x6) cable rated up to 600W, 3 SATA cables and 1 PATA cable. Cable counts match the Cybenetics table.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Cables and Connectors table: ATX 600 mm 18AWG, EPS 4+4 640 mm 18AWG (2 cables), 6+2 PCIe 590 mm plus 140 mm on two cables with two plugs each plus one single 590 mm cable (5 plugs, all 18AWG), 12+4 pin PCIe 645 mm (600W) 16-24AWG, SATA 450 mm then 120 mm then 120 mm on 3 cables (9 plugs), 4-pin Molex 440 mm then 110 mm then 110 mm on 1 cable (3 plugs). The stored lengths are the maker's lengths from the retail box. Cybenetics measured slightly shorter cables. The 16-24AWG range includes the thin sideband wires.

BMSI MAG A850GL PCIE5

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	600	18AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	750	18AWG	Not available
PCIe 8-pin (6+2)	4	2	600	18AWG	Not available
16-pin PCIe (revision not stated)	1	1	600	Not available	600
SATA power	8	2	500	18AWG	Not available
4-pin Molex	4	1	500	18-20AWG	Not available
4-pin floppy	1	1	500	18-20AWG	Not available

Source1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Connector table: ATX 24 pin 1, EPS 4+4 pin 2, PCI-E 5.0 16 pin 1 (600W), PCI-E 6+2 pin 4, SATA 8, Molex 4, FDD 1. The datasheet gives no cable counts, lengths or wire gauges. Those come from the Cybenetics cable table. The datasheet and Geizhals rate the 16-pin cable 600W. Cybenetics and Hardware Busters say the connector is set to 450W by its sense pins. The 600W maker figure is stored.5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Cables and Connectors table: ATX 20+4 pin 600 mm 18AWG, 2 x 4+4 pin EPS 750 mm 18AWG, two 6+2 pin PCIe cables 600 mm + 150 mm (4 plugs) 18AWG, 12+4 pin PCIe 600 mm (450W) 16-26AWG, two SATA cables 500 + 150 + 150 + 150 mm (8 plugs) 18AWG, one cable with 4 Molex and 1 FDD 500 + 150 + 150 + 150 mm (+150 mm) 18-20AWG. The 16-26AWG range of the 12+4 pin cable includes the thin sideband wires and no source gives the power wire gauge, so no gauge is stored. Lengths are the lengths to the first plug.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Cable table matches the Cybenetics report. The review calls the connector a plain 12VHPWR socket although the label says 12V-2x6, and says the connector is set to 450W.

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.

5=CalculatedFrom Cables

4=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.

1=CalculatedFrom Cables

1=CalculatedFrom Cables

SATA power connectors

9=CalculatedFrom Cables

8=CalculatedFrom Cables

4-pin Molex connectors

3=CalculatedFrom Cables

4=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.

Flat2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 2: ASRock are using thin ribbon style cables.4Reviewfunkykit.com/reviews/power-supplies/asrock-steel-legend-sl-850g-850w-power-supply-reviewRead 14 October 2026Page 1: a full set of flat modular cables.

Flat1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Feature list: Full modular design, Flat cables.

Fan

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

135mm2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 4: 135 mm fan, model S1352512EH-3M.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Parts Description: RL4Z S1352512EH-3M, 135 mm, 12V, 0.50A.

120mm1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Fan Size 120 mm. Cybenetics names the fan DF1202512FDHN.3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: 120mm FDB fan.5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Cooling: 120mm Fluid Dynamic Bearing Fan (DF1202512FDHN).

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.

Fluid dynamic (FDB)2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 4: high grade fluid dynamic bearing (FDB) fan.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Parts Description: Fluid Dynamic Bearing Fan.

Fluid dynamic (FDB)1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Fan Bearing Fluid Dynamic Bearing. The Bearing Type row prints Hydro-Dynamic Bearing. The feature list says 120mm Fluid Dynamic Bearing Fan. The rated speed is 500 - 1800 +-15% RPM.3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: 120mm FDB fan.5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Cooling: 120mm Fluid Dynamic Bearing Fan (DF1202512FDHN).

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.

Semi-passive2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3: the iCool switch switches the fan off in lower demand situations, like the semi passive switches of other brands. Page 6: the fan remains off until higher loads are demanded.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026DUT Information: Semi-Passive Operation checked (selectable). The fan reads 0 rpm up to 40% load at both voltages.

Always on5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026Semi-Passive Operation is marked absent. The typical load tests show the fan at 1145 rpm at 10% load.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Technical specifications: Semi-Passive Operation not supported.

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.

Yes2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3: a switch labelled iCool on the power side of the unit.5Owner's manualmanua.ls/asrock/steel-legend-sl-850g/manualRead 14 October 2026Quick Installation Guide step 8: if the iCOOL mode is set to ON, the fan will not spin during low to medium loads. The PDF is hosted on manua.ls.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026DUT Information: Semi-Passive Operation (selectable).

No5Measurementcybenetics.com/evaluations/psus/2336Read 16 October 2026The unit has no semi-passive mode, so it has no switch for it.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Semi-passive operation is marked absent in the specification list.

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-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 4: SCP, OPP, OCP, OTP, OVP and UVP protections. The retail box lists OPP/OVP/UVP/SCP/OCP/OTP.7Measurementcybenetics.com/evaluations/psus/2548Read 14 October 2026Protection Features (Manufacturer) lists OPP, OCP (+12V), OTP, SCP, surge protection and inrush current protection. Fan failure protection is not ticked. The protection tests tick NLO and show SIP: surge MOV, inrush NTC and bypass relay.

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)1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications and feature list: OCP / OVP / OPP / OTP / SCP / UVP. NLO and SIP come from the Hardware Busters protection tests.7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Protection Features page: NLO passes, SIP is MOV for surge and an NTC thermistor with bypass relay for inrush, fan failure protection is absent, OTP and SCP pass. The Cybenetics report has no protection test section for this unit. The review says its 12V and OPP settings are correct, and 3.3V OCP triggers too high.

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.

Yes2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Retail box feature list: 100% Highly Reliable Japanese Capacitors. Page 4: Japanese capacitors throughout the design.

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.

100,000h3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-850g-850w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 14 October 2026Spec table row MTBF (Hours)@25C: 100,000. The listing copies ASRock's table, so the 25 C test temperature is the maker's. Paradigit lists the same 100000 hours.

150,000h1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Life Expectancy MTTF 150,000 Hours (25 C). The figure is for the unit, so it is stored as MTBF.

Monitoring and lighting

1 of 4 differ

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

No8Retailer pagestore.fluidone.com/msi-mag-a850gl-pcie5-power-supply-unit-850-w-20-4-pin-atx-atx-black-mag-a850gl-pcie5Read 16 October 2026Spec sheet: Illumination No.

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.

Width150Height86Depth150mm(5.9 × 3.4 × 5.9 in)2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Page 3: 150 mm x 150 mm x 86 mm (L x W x H). Depth 150, width 150, height 86.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026Specifications: Dimensions (DxWxH) 140 x 150 x 86 mm. Depth 140, width 150, height 86. Hardware Busters prints 150 x 85 x 140 mm for W x H x D. The table also prints 120 x 120 x 25.6 mm and a card weight of 169 g, which are fan-card template rows and are not stored.3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: width 150 mm, depth 140 mm, height 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

1.45kg(3.2 lb)7Reviewhwbusters.com/psus/msi-mag-a850gl-pcie5-850w-psu-reviewRead 16 October 2026Technical specifications: 1.45 kg (3.2 lb). The review does not say whether cables are included. MSI does not publish a weight. Review published November 7, 2023.

In the box

1 of 1 differ

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

Power Supply, AC Power Cord, Modular Cables, ATX Bridging Connector Plug, Mounting Screws, Cable Ties, Velcro Straps, Leaflet4Reviewfunkykit.com/reviews/power-supplies/asrock-steel-legend-sl-850g-850w-power-supply-reviewRead 14 October 2026Page 3: power supply, power cord for the wall, modular power cables, ATX bridging connector plug (detection tool), mounting screws, cable ties and velcro straps. KitGuru adds a leaflet.

Not available

Links

Not compared

Product page

www.asrock.com/Power-Supply/SteelLegend/SL-850G1Maker product pageasrock.com/Power-Supply/SteelLegend/SL-850GRead 14 October 2026ASRock's product page answers agents with a bot check, so its text was not read. The link is the page that search results name for the SL-850G. The specs below come from a retailer copy of ASRock's spec table, the photographed retail box, reviews and the Cybenetics report.

de-store.msi.com/products/mag-a850gl-pcie54Maker product pagede-store.msi.com/products/mag-a850gl-pcie5Read 16 October 2026MSI e-shop Germany. msi.com and us-store.msi.com refused automated access.

Spec sheet

Not available

storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdf1Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/us/MAG-A850GL-PCIE5.pdfRead 16 October 2026MSI US datasheet for MAG A850GL PCIE5, generated 2025-12-03. MSI publishes regional copies at storage-asset.msi.com/datasheet/power-supply/<region>/MAG-A850GL-PCIE5.pdf.

Manual

Not available

Not available

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.

10years2Reviewkitguru.net/components/power-supplies/zardon/asrock-steel-legend-sl-850g-psu-reviewRead 14 October 2026Overview: Global 10 Years Warranty.3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-850g-850w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 14 October 2026Spec table: Warranty (Years) 10. The market is not named.

7years2Maker spec sheet (PDF)storage-asset.msi.com/datasheet/power-supply/jp/MAG-A850GL-PCIE5.pdfRead 16 October 2026Japanese feature list, generated 2025-02-03: 7-year long product warranty. The sheet is for the JP market. The German e-shop and the Japanese launch release also say 7 years. Hardware Busters says five years.3Press articlegdm.or.jp/pressrelease/2023/0719/498049Read 16 October 2026Release text: product warranty 7 years. The market is Japan.4Maker product pagede-store.msi.com/products/mag-a850gl-pcie5Read 16 October 2026Page shows 7 Jahre Garantie. The page is the German shop, so the market is Germany. The page text still says ATX 3.0 compatible and native PCIe 5.0.

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