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ASRock Steel Legend SL-1000G vs Seasonic CORE GX-850 (2024)

39 of 58 fields differ

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  • 30 different values
  • 9 known for one only
  • 16 the same
  • 3 missing for both

Biggest differences

Each bar uses the scale of all 66 power supplies.

  1. PCIe 8-pin connectorsA: 5B: 3ASRock has 2 more.
  2. SATA power connectorsA: 9B: 6ASRock has 3 more.
  3. 12V rippleLower is betterA: 40.28mVB: 28.89mVSeasonic is 11.39 mV lower.
  4. Average noiseLower is betterA: 21.99dB(A)B: 28.17dB(A)ASRock is 6.18 dB(A) lower.
  5. PowerA: 1,000WB: 850WASRock is 150 W higher.

Size, drawn to scale

Front and side.

All 66 fields

Every value links to where we found it.

AASRock Steel Legend SL-1000G
BSeasonic CORE GX-850 (2024)

General

7 of 12 differ
Announced
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available

Power

5 of 9 differ
Full power rated up to
Not available

Certifications

3 of 5 differ
Cybenetics efficiency at 230V

Measured

10 of 10 differ
Hold-up time (measured)

Cables and connectors

4 of 7 differ
Cables
AASRock Steel Legend SL-1000G
ConnectorConnectorsCablesLength to first plug (mm)Wire gaugeRated power (W)
ATX 24-pin (20+4)1160018AWGNot available
CPU 8-pin (EPS, 4+4)2265018AWGNot available
PCIe 8-pin (6+2)5360018AWGNot available
12V-2x61165016AWG600
SATA power9345018AWGNot available
4-pin Molex3145018AWGNot 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.
BSeasonic CORE GX-850 (2024)
ConnectorConnectorsCablesLength to first plug (mm)Wire gaugeRated power (W)
ATX 24-pin (20+4)1161016-18AWGNot available
CPU 8-pin (EPS, 4+4)2275016AWGNot available
PCIe 8-pin (6+2)1175016-18AWGNot available
PCIe 8-pin (6+2)2170016-18AWGNot available
12V-2x61170016AWG600
SATA power6245518AWGNot available
4-pin Molex3145518AWGNot available
Source5Reviewkitguru.net/components/power-supplies/zardon/seasonic-core-gx-850-atx-3-reviewRead 15 October 2026Page 2 shows Seasonic's Cable Summary slide for the CORE GX ATX 3, 850 W column: MB 610 mm 1 cable with 20+4 pins, CPU 750 mm 2 cables with 4+4 pins, 12V-2x6 700 mm 1 cable, PCIe 750 mm 1 cable with 6+2 pins, PCIe 700 mm 1 cable with 16 pins to 2 x 6+2 pins, SATA 750 mm 2 cables with 3 connectors, Molex 690 mm 1 cable with 3 connectors. The review says both connector types support up to 600 W. The SATA and Molex lengths run to the last plug, so the first-plug lengths come from the Cybenetics report (455 mm for both). The page 3 photo of the modular panel shows one 12-pin PCIe socket, so the 16-pin to dual 8-pin cable shares that socket with the native 12V-2x6 cable. Wire gauges come from Cybenetics.6Measurementcybenetics.com/evaluations/psus/2750Read 15 October 2026Cables and Connectors table: ATX 20+4 pin 620 mm 16-18AWG, 2 x 4+4 pin EPS12V 750 mm 16AWG, one cable with 2 x 6+2 pin PCIe plugs 710 mm 16-18AWG, one 6+2 pin PCIe 750 mm 16-18AWG, 12+4 pin PCIe 700 mm (600W) 16-28AWG, 2 SATA cables of 455+155+155 mm with 6 plugs, one 4-pin Molex cable of 455+125+125 mm with 3 plugs, 18AWG, no in-cable capacitors. The 16-28AWG range of the 12V-2x6 cable includes the thin sideband wires, so the stored gauge is the 16AWG power wire. Seasonic's slide lengths are stored where they are first-plug lengths. Cybenetics measured 620 mm for the 24-pin cable and 710 mm for the dual 8-pin cable.8Retailer pageldlc.com/en/product/PB00657446.htmlRead 15 October 2026Power connectors: 2 x +12V (P8, 2 x P4), 6 x Serial ATA, 1 x ATX 20+4 pin, 3 x Molex (4 pin), 3 x PCI Express 6+2 pin, 1 x PCI Express 16 pin (12V-2x6).
CPU (EPS) connectors
2
2
PCIe 8-pin connectors
5
3
16-pin GPU connectors
1
1
SATA power connectors
9
6
4-pin Molex connectors
3
3

Fan

4 of 4 differ

Protection and parts

1 of 3 differ
Protections

Monitoring and lighting

1 of 4 differ
Software monitoring
Not available
Not available
Software
Not available
Not available
Built-in power display
Not available
Not available

Dimensions and weight

2 of 2 differ
Weight
Not available

In the box

1 of 1 differ

Warranty

1 of 1 differ

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