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 is a 1000W fully modular power supply aimed at mainstream to high-performance desktop builders who want certified efficiency, near-silent operation, and long-term reliability. It addresses the common frustration of noisy, inefficient PSUs by combining 80 PLUS Gold and Cybenetics Platinum efficiency ratings with an intelligent zero-RPM fan mode and a 10-year warranty.
Why this product
80 PLUS Gold and Cybenetics Platinum certified
It carries both 80 PLUS Gold and Cybenetics Platinum efficiency certifications, along with a Cybenetics Lambda A acoustic rating, meaning it has been independently verified for both energy efficiency and low-noise operation.
Zero-RPM fan mode for quiet builds
The iCool intelligent fan control keeps the 135mm FDB fan fully off at low to medium loads, spinning up only when heat or power draw demands it. Switching iCool off runs the fan continuously for sustained heavy workloads.
ATX 3.1 and PCIe 5.1 ready
It ships with a native 12V-2x6 connector in a dual-colour design, making it compatible with the latest high-power graphics cards without adapters, and ready for next-generation ATX 3.1 platforms.
Fully modular cabling
Every cable detaches completely, so unused connectors stay out of the case for cleaner airflow and simpler builds. ASRock Classic Green connectors provide a visible cue that each cable is seated correctly.
100% Japanese capacitors rated to 105 °C
All capacitors — both electrolytic and solid — are Japanese-made and rated to 105 °C, supporting the extended 10-year warranty and prolonged operational lifespan.
Comprehensive protection suite
It includes over-current, short-circuit, over-voltage, under-voltage, over-temperature, and over-power protection (OCP, SCP, OVP, UVP, OTP, OPP) to guard components across a wide range of load conditions.
- Max Output Power1000W
- Efficiency Rating80 PLUS Gold
- Cybenetics RatingPlatinum / Lambda A
- Modular DesignFully Modular
- ATX StandardATX 3.1 / PCIe 5.1
- Fan135mm Striped Axial FDB
- Warranty10 Years
- CapacitorsJapanese, 105 °C rated
- SKUASR-768
- EAN4710483949197
- Compatible with ATX 3.1 motherboard form factor and PCIe 5.1 graphics cards via the native 12V-2x6 connector.
- Supports systems requiring dual CPU power with 2 × EPS 12V (4+4-pin) connectors.
- Provides 9 SATA and 3 peripheral (4-pin) connectors, suiting builds with multiple storage drives and accessories.
- Cybenetics Platinum and Lambda A badges may not appear on earlier unit packaging; performance and specifications are unchanged — check the official Cybenetics website for the current certification listing.
- Not designed for SFX or SFX-L small-form-factor cases; this is an ATX-sized unit.
Best for
- High-performance desktop builders who need 1000W of clean, Gold-certified power for demanding CPU and GPU combinations.
- Quiet-PC enthusiasts who want a zero-RPM mode backed by an independent Lambda A acoustic certification for near-silent operation under everyday loads.
- Builders investing long-term who value a 10-year warranty and 105 °C Japanese capacitors for reliability over many years.
- Latest-generation GPU adopters running PCIe 5.1 cards that benefit from the native 12V-2x6 connector without requiring an adapter.
- Cable-management-focused builders who prefer a fully modular design to keep unused connectors out of the case entirely.
Trade-offs
- Small-form-factor and compact builds — this is an ATX unit and will not fit SFX or SFX-L cases.
- Extremely power-hungry workstation configurations — with a maximum output of 1000W, systems that require 1200W or more will need a higher-rated unit.
- Builders who need more than one PCIe 5.1 (12+4-pin) connector — only one native 12V-2x6 connector is included; dual high-end GPU setups using this connector type are not covered.
- Users requiring more than three PCIe 6+2-pin connections — the cable complement is fixed at three, which may be limiting for multi-GPU or heavily accessorised configurations.
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 Cybenetics certification on the packaging has been updated. Some earlier units may not show the badge. For the latest certification details, please visit the official Cybenetics website. Product specifications and performance remain unchanged.
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.
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.
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.
General
| Brand | ASRock |
|---|---|
| Model | SL-1000G |
| Max Output Power | 1000W |
| ATX Standard | ATX 3.1 & PCIe 5.1 Ready |
| Modular Design | Fully Modular |
| Warranty | 10 Years |
Efficiency & Certification
| Efficiency Certification | 80 PLUS Gold |
|---|---|
| Cybenetics Efficiency | Cybenetics Platinum |
| Cybenetics Acoustic | Lambda A |
| Capacitors | 100% Japanese, 105 °C (electrolytic & solid) |
Connectors
| +12V Rail Output | 83.3A / 1000W |
|---|---|
| ATX / Main Connector | 1 × 24-pin (20+4) |
| EPS 12V CPU Connectors (4+4-pin) | 2 |
| PCIe 5.1 (12+4-pin) 12V-2x6 Dual Colour | 1 |
| PCIe Connectors (6+2-pin) | 3 |
| 4-pin Peripheral Connectors | 3 |
| SATA Connectors (5-pin) | 9 |
Cooling & Protection
| Fan | 135mm Striped Axial FDB Fan |
|---|---|
| Fan Control | iCool Intelligent Fan Control (zero-RPM at low/medium load) |
| Protections | OCP, SCP, OVP, UVP, OTP, OPP |
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.