PC parts / Power supplies
ASRockPower supply
Steel Legend SL-1000G
Released November 2024.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026Weekly ASCII review of the white SL-1000GW, dated December 30, 2024, sponsored by ASRock. It calls the unit newly released. Last checked 15 October 2026.
- Power
- 1,000W
- Efficiency
- 80 PLUS Platinum
- Modular cables
- Fully modular
- ATX version
- ATX 3.1
51 of 66 fields known.
At a glance
PCIe 8-pin connectors
5
Higher than 84% of other power supplies.
Efficiency at 230V
Higher than 75% of other power supplies.
General
- Model numbers
- SL-1000G, SL-1000GW5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026The review is of the SL-1000GW, the white model.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026The report names the model SL-1000G / SL-1000GW and says the results apply to both the black and white models.
- GTIN / EAN
- Not available
- Announced
- Not available
- Status
- Available3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026UK retailer listing shows the unit in stock in October 2026.4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026Listing shows 3 pieces at a remote stock and an estimated delivery in October 2026.
- Predecessor
- Not available
- Successor
- Not available
- Launch price (US)
- Not available
- Launch price (EU)
- Not available
- Markets
- Not available
- Form factor
- ATX3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026The 150 x 150 x 86 mm body is an ATX unit with the 150 x 86 mm back face.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Type ATX12V.
- ATX version
- ATX 3.13Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row ATX 12V Version: ATX 3.1.4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026Box image badge ATX 3.1 COMPATIBLE. Spec table ATX version 3.1.
- Modular cables
- Fully modular4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026Spec table Cabling type: Fully-Modular.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Cable Design Fully Modular.
Power
- Rated continuous power
- 1,000W7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Rated Power 1000 W. The Power Specifications table gives a total maximum power of 1000 W.
- Full power rated up to
- Not available
- 12V rail design
- Single rail7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Power Specifications table lists one +12V column, 83.4A.
- +12V max power
- 1,000W7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Power Specifications table: +12V 1000 W, total maximum power 1000 W.
- +3.3V and +5V combined power
- 120W7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Power Specifications table: one merged cell of 120 W under +3.3V and +5V, so it is one shared limit. Each rail is 20 A.
- +5V standby current
- 3A7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Power Specifications table: +5VSB 3 A, 15 W.
- AC input voltage
- Lowest100Highest240V3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row AC Input: 100-240V, 50-60Hz, 15-7.5A.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Rated Voltage 100-240 Vrms, manufacturer-provided.
- Alternative low power mode (ALPM)
- Yes7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is also checked. The ATX 3.1 badge on the report reads Outside Validation Scope.
Certifications
- Cybenetics efficiency at 115V
- Cybenetics Platinum7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Report 24PS2542A, certification ID 252542, tested Aug 20, 2024 and issued Aug 24, 2024. ETA Platinum at 115V (badge image). ASRock's retailer copy says Cybenetics Platinum. Some Newegg listings print Titanium, which the report does not show.
- Cybenetics efficiency at 230V
- Cybenetics Platinum7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026ETA Platinum at 230V (badge image).
Measured
- Average efficiency at 115V (measured)
- 90.065%7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Sample received Aug 9, 2024.
- Average efficiency at 230V (measured)
- 92.186%7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Average over more than 1450 load combinations at 230V.
- Light-load efficiency at 115V (measured)
- 72.897%7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Efficiency at 2% load at 115V. The unit is above 500 W, so the 2% load applies. At 230V it is 74.319%.
- Average power factor at 115V (measured)
- 0.987Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.937.
- Average noise at 115V (measured)
- 21.99dB(A)7Measurementcybenetics.com/evaluations/psus/2542Read 15 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 22.25 dBA.
- Noise at full load at 115V (measured)
- 47dB(A)7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Typical load tests at 115V, 100% load row: 47 dB(A) at 2005 rpm fan speed, intake 45.79 C and exhaust 60.19 C. The fan was in its default semi-passive mode.
- Standby power with no load at 115V (measured)
- 0.048W7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Standby power consumption at 115V with no load on +5VSB. At 230V it is 0.1155 W.
- Hold-up time (measured)
- 18.9ms7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 18.9 ms, AC loss to PWR_OK 16.5 ms, at maximum continuous load. Report 2542.
- 12V ripple at full load (measured)
- 40.28mV7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 37.08 mV.
- 12V load regulation (measured)
- 0.64%7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.65%.
Cables and connectors
- Cables
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 Source4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026The gallery image SL-1000G-1 is ASRock's Cables Included slide: 1x MB 24 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 slide counts cables. Cybenetics and the ASCII review show that two of the three PCIe cables carry two plugs each, so the unit has 5 PCIe 8-pin plugs on 3 cables. SATA is 9 plugs on 3 cables and Molex is 3 plugs on 1 cable. The ASRock spec table on Inside Tech prints 2 for 12+4 pin, which Cybenetics, BuildCores, Geeknetic and ASCII do not show. One cable is stored.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026Cables in the box: 1 ATX 20+4 pin, 2 EPS 4+4 pin, 1 12V-2x6 rated to 600 W, 3 PCIe 6+2 pin, 3 SATA cables with 9 SATA plugs and 1 peripheral cable with 3 plugs. The reviewer measured about 600 mm for the ATX cable, 650 mm for the EPS and 12V-2x6 cables and 600 mm for the PCIe cables.7Measurementcybenetics.com/evaluations/psus/2542Read 15 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 ASRock's Cables Included slide. The 16-24AWG range of the 12V-2x6 cable includes the thin sideband wires, so the 16AWG power wire gauge is stored. The sample is the same for the black and white models.- CPU (EPS) connectors
- 2
- PCIe 8-pin connectors
- 5
- 16-pin GPU connectors
- 1
- SATA power connectors
- 9
- 4-pin Molex connectors
- 3
- Cable style
- Flat3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Cable Type: Flat.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026The modular cables are the flat type.
Fan
- Fan size
- 135mm3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Fan: 135mm Striped Axial FDB Fan.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Parts Description: RLAZ S1352512EH-3M, 135 mm, 12V, 0.50A.
- Fan bearing
- Fluid dynamic (FDB)3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Fan: 135mm Striped Axial FDB Fan. The description says 135mm Fluid Dynamic Bearing Fan.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026Parts Description: Fluid Dynamic Bearing Fan.
- Fan mode
- Semi-passive1Owner's manualdownload.asrock.com/Manual/QIG/Power%20Supply%20Series_multiQIG.pdfRead 15 October 2026Installation step 8: if the iCOOL mode is set to ON, the fan will not spin during low to medium loads.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026The iCool Intelligent Fan Control Mode stops the fan at idle. ASRock says the fan stops below 40% load. With the mode off the fan keeps about 12% speed at idle.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Semi-Passive Operation checked (selectable). In the typical load tests the fan reads 0 rpm up to 40% load at 115V.
- Fan mode switch
- Yes1Owner's manualdownload.asrock.com/Manual/QIG/Power%20Supply%20Series_multiQIG.pdfRead 15 October 2026Installation step 8 describes the iCOOL mode as a setting that can be ON, so the fan can be made to spin at low load. The switch itself is on the back of the unit, as the ASCII review shows.3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row iCOOL MODE: Yes (Switch). iCOOL Mode OFF: the fan runs continuously.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026The mode is switched with a rocker switch on the back of the unit.7Measurementcybenetics.com/evaluations/psus/2542Read 15 October 2026DUT Information: Semi-Passive Operation (selectable).
Protection and parts
- Protections
- 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)3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Protections: OCP, SCP, OVP, UVP, OTP, OPP. NLO and SIP come from the Cybenetics protection tests.7Measurementcybenetics.com/evaluations/psus/2542Read 15 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.
- All-Japanese capacitors
- Yes3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Capacitors: All Japanese.4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026Box image: 100% Japanese Capacitors badge. The description says the PSU is built with 100% Japanese capacitors.
Monitoring and lighting
We could not find any of these 4 fields. Show them
- Software monitoring
- Not available
- Software
- Not available
- Built-in power display
- Not available
- RGB lighting
- Not available
Dimensions and weight
Front and side, drawn to scale.
- Dimensions
- Width150Height86Depth150mm(5.9 × 3.4 × 5.9 in)3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Dimensions (L x W x H): 150mm x 150mm x 86mm. Depth 150, width 150, height 86.5Reviewweekly.ascii.jp/elem/000/004/243/4243655Read 15 October 2026Measured by the reviewer at 150 x 150 x 86 mm (W x D x H).
In the box
We could not find any of these 1 fields. Show them
- In the box
- Not available
Links
- Product page
- www.asrock.com/Power-Supply/SteelLegend/SL-1000G2Maker product pageasrock.com/Power-Supply/SteelLegend/SL-1000GRead 15 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-1000G. The specs below come from a retailer copy of ASRock's spec table, ASRock's box and cable images hosted by a retailer, a review, the Cybenetics report and the 80 PLUS list.
- Spec sheet
- Not available
- Manual
- download.asrock.com/Manual/QIG/Power%20Supply%20Series_multiQIG.pdf1Owner's manualdownload.asrock.com/Manual/QIG/Power%20Supply%20Series_multiQIG.pdfRead 15 October 2026ASRock's Quick Installation Guide for its power supply series. It is shared by all ASRock power supply series and names no model values.
- EPREL registration number
- Not available
Warranty
- Manufacturer warranty (source market)
- 10years3Retailer pageinside-tech.co.uk/power-supplies-2/asrock-steel-legend-sl-1000g-1000w-atx-power-supply-unit-80-plus-gold-certified-120mm-silent-cooling-fan-high-efficiency-psuRead 15 October 2026Spec table row Warranty (Years): 10. Text: ASRock offers a 10-year warranty. The market is not named. Multitronic prints 3 years, which is not the maker's term.4Retailer pagemultitronic.fi/en/products/4417376/asrock-steel-legend-sl-1000g-1000w--virtalahde--80-plus-goldRead 15 October 2026Box image badge: 10 year warranty. The listing's own Warranty row says 3 years, which is not the maker's term.
Compare with
Pick a power supply to see both side by side. Differences are marked yellow.
Variants
Each variant lists only what differs from the specs above.
| Model number | Colours |
|---|---|
| SL-1000G | Steel Black |
| SL-1000GW | Steel White |
Sources
We read 8 sources for this power supply. The numbers match the markers in the sheet.
- Maker product pageasrock.com/Power-Supply/SteelLegend/SL-1000G
- Measurementcybenetics.com/evaluations/psus/2542
See a wrong value? Tell us and name the field.