ASRock Steel Legend SL-1000G 1000W 80+ Gold Modular PSU
ASRock
ASRock Steel Legend SL-1000G 1000W 80+ Gold Modular PSU
The ASRock Steel Legend SL-1000G 1000W 80+ Gold Modular PSU is a fully modular power supply designed for mainstream desktop builds that demand clean, quiet power delivery without compromise. It suits builders who want long-term reliability, evidenced by a 10-year warranty and 100% Japanese capacitors, alongside near-silent operation through its iCOOL fan control mode. ATX3.1 and PCIe 5.1 readiness makes it a practical choice for current and near-future GPU generations.
Why this product
80 PLUS Gold and Cybenetics Platinum certified
Dual efficiency certifications confirm this unit meets strict energy conversion benchmarks, meaning less heat generated and lower electricity costs under typical loads.
Near-silent iCOOL fan control
The iCOOL mode keeps the 135mm FDB fan completely off under low to medium loads, with Cybenetics LAMBDA A acoustic certification backing the noise performance claims.
Fully modular cabling
Every cable detaches, so only the connectors a build actually needs go inside the case, making cable management cleaner and airflow easier to manage.
ATX3.1 and PCIe 5.1 ready
Includes a native 12V-2x6 connector with dual-colour design for correct installation confirmation, supporting current high-power graphics cards without an adapter.
10-year warranty with Japanese capacitors
ASRock backs this unit with a 10-year warranty, and the 105 °C-rated Japanese capacitors with herringbone-structure FDB fan bearing are specified to support that lifespan.
Full protection suite built in
OCP, SCP, OVP, UVP, OTP and OPP protections are all present, guarding components across normal to extreme power conditions.
- Rated Power1000W
- Efficiency80 PLUS Gold / Cybenetics Platinum
- ModularFully Modular
- Native GPU Connector12V-2x6 (PCIe 5.1)
- Fan135mm Striped Axial FDB
- Warranty10 Years
- StandardATX3.1 & PCIe5.1
- MTBF100,000 hours @ 25°C
- SKUASR-751
- EAN4710483949203
- Compatible with ATX3.1 motherboard and case standards.
- PCIe 5.1 ready with a native 12V-2x6 (12+4 pin) connector for current high-power GPUs.
- Supplies two 4+4 pin EPS CPU connectors, supporting dual-CPU or HEDT motherboards that require both.
- Physical dimensions are 150 mm × 150 mm × 86 mm — verify case PSU clearance before ordering, particularly in compact mid-tower or small-form-factor enclosures.
- Does not include a PCIe 5.1 Cable TempGuard feature; users who specifically require that cable safety feature should note its absence.
Best for
- High-power GPU builds: 1000W continuous output and a native 12V-2x6 connector handle current top-tier graphics cards without requiring an adapter cable.
- Quiet computing environments: iCOOL mode and Cybenetics LAMBDA A certification make it well-suited to recording studios, living room PCs or anyone working in a noise-sensitive setting.
- Long-term or investment builds: The 10-year warranty and 100,000-hour MTBF rating at 25 °C suit builders who intend to keep a system running for many years without swapping the PSU.
- Clean cable management builds: Full modularity means unused cables stay out of the case, benefiting showcased or windowed builds where cable routing is a priority.
- ATX3.1-platform adopters: Builders moving to ATX3.1 cases and motherboards get full standard compliance without needing adapters or workarounds.
Trade-offs
- Budget-conscious builds: A 1000W fully modular unit with a 10-year warranty carries a higher price point than basic non-modular alternatives; users with modest power needs may find a smaller wattage in the same series more cost-appropriate.
- Builds requiring PCIe 5.1 Cable TempGuard: This is explicitly absent from the specification — builders who consider that safety feature non-negotiable should look elsewhere.
- Ultra-compact or SFX builds: At 150 mm × 150 mm × 86 mm, this is an ATX-format unit and will not fit cases designed for SFX or SFX-L power supplies.
- Continuous fan-noise sceptics who prefer always-on cooling: iCOOL mode is the default efficiency path; users who keep the fan in continuous-on mode for maximum airflow under sustained heavy loads will reduce the acoustic benefit.
The Steel Legend series power supply unit offers options of 1200W, 1000W, 850W, 750W, and 650W, available in "Steel Black" and "Steel White" ideal for mainstream systems.
Certified for 80 PLUS Gold efficiency and Cybenetics Platinum rating, along with LAMBDA A+/A acoustic certification, it ensures outstanding energy performance.
The Steel Legend series power supply earning the prestigious Cybenetics Lambda A certification. This recognition underscores the Steel Legend series' outstanding noise control performance, making it an exceptional choice for users seeking ultra-quiet operation.
With ASRock Classic Green connectors, users can easily see if the connector has been plugged properly.
●iCOOL Mode ON: The power supply runs more efficiently. The fan stays off during low to medium loads, reducing noise and improving energy efficiency. The fan only activates when the load or temperature increases.
●iCOOL Mode OFF: The fan runs continuously, regardless of load. This may increase noise slightly but provides consistent cooling and better performance under heavy loads.
The fluid seal design and the herringbone structure provides an extremely long lifespan and noise minimization. 105 °C Japanese-made Capacitor and Solid Capacitor, makes prolonged life span possible.
Full suite of protections to keep all components safe during normal to extreme power levels.
ASRock offers an outstanding 10-Year warranty, guaranteeing long term reliable and peace of mind operation.
General
| Brand | ASRock |
|---|---|
| Model | SL-1000G |
| Standard | ATX3.1 & PCIe5.1 |
| Modular | Full Modular |
| Cable Type | Flat |
| Warranty | 10 Years |
Power & Efficiency
| Maximum Power | 1000W |
|---|---|
| Continuous 12V Output | 83.4A |
| Total Power Excursion | 200% |
| Efficiency Certification | 80 PLUS Gold, Cybenetics Platinum, Lambda A |
| 5V Boost | Built-in |
Cooling & Reliability
| Fan | 135mm Striped Axial FDB Fan |
|---|---|
| iCOOL Mode | Yes (Switch) |
| Capacitors | 100% Japanese, 105°C rated |
| MTBF | 100,000 hours @ 25°C |
| Dimensions (L × W × H) | 150mm × 150mm × 86mm |
Connectors & Protections
| Motherboard (24-pin) | 1 |
|---|---|
| EPS 12V CPU (4+4-pin) | 2 |
| PCIe 5.1 12V-2x6 (12+4-pin) | 1 |
| PCIe (6+2-pin) | 3 |
| 4-pin Peripheral | 3 |
| SATA (5-pin) | 9 |
| Protections | OCP, SCP, OVP, UVP, OTP, OPP |
| PCIe 5.1 Cable TempGuard | No |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.