ASRock Steel Legend SL-1200GW 1200W 80+ Gold PSU White
ASRock
ASRock Steel Legend SL-1200GW 1200W 80+ Gold PSU White
The ASRock Steel Legend SL-1200GW 1200W 80+ Gold PSU White is a fully modular, high-wattage power supply built for enthusiast and high-end gaming builds that demand clean power delivery and long-term reliability. It suits builders running power-hungry GPUs and multi-component systems who want ATX 3.1 compatibility, native 12V-2x6 connectivity, and the confidence of a 10-year warranty — all in a white aesthetic to match modern cases.
Why this product
80 PLUS Gold and Cybenetics PLATINUM certified
It carries both 80 PLUS Gold and Cybenetics PLATINUM efficiency ratings, along with a Cybenetics LAMBDA A noise certification, meaning independently verified efficiency and acoustic performance.
ATX 3.1 and PCIe 5.1 ready
It meets the ATX 3.1 standard and includes a native 12V-2x6 connector, making it compatible with current-generation graphics cards without adapters.
Fully modular cable design
Every cable detaches, so you only route what you need — reducing clutter and improving airflow inside the case.
iCool fan control for quiet operation
The iCool mode keeps the 135 mm FDB fan off at low to medium loads, only spinning up when temperature or power draw demands it.
100% Japanese capacitors rated to 105 °C
All internal capacitors are Japanese-made and rated for 105 °C operation, supporting the longevity backed by the 10-year warranty.
10-year warranty
ASRock covers this unit for a full decade — one of the longest warranty periods offered on any consumer power supply.
- Wattage1200W
- Efficiency80 PLUS Gold
- ModularFully Modular
- ATX StandardATX 3.1 & PCIe 5.1
- Fan135mm FDB
- Warranty10 Years
- ColourWhite
- Dimensions150 × 86 × 150 mm
- SKUASR-773
- EAN4711581491083
- Compatible with ATX 3.1 motherboard power standards.
- Supports PCIe 5.1 graphics cards via the native 12V-2x6 connector.
- Fits standard ATX cases that accommodate a 150 × 86 × 150 mm PSU.
- Availability varies by region — confirm with your local retailer before ordering, as this model is not sold worldwide.
- Some earlier units may not display the updated Cybenetics certification badge on the packaging; specifications and performance are unchanged.
Best for
- High-end GPU builds: 1200 W of output and a native 12V-2x6 connector make it well suited to current top-tier graphics cards.
- Quiet, noise-sensitive setups: iCool mode keeps the fan off during light and moderate loads, and Cybenetics LAMBDA A certification confirms independently measured low acoustic output.
- Long-term or enthusiast builds: A 10-year warranty and 105 °C Japanese capacitors target builders who do not want to replace a PSU for many years.
- White-themed builds: The white finish matches cases and components designed around a light colour scheme.
- Builders who value cable management: Fully modular cabling means unused cables stay out of the case entirely.
Trade-offs
- Budget or mid-range builds: 1200 W exceeds what most single-GPU mid-range systems need; a lower-wattage unit would be more appropriate.
- Small form factor cases: At 150 × 86 × 150 mm, it is a full ATX-size unit and will not fit SFX or SFX-L enclosures.
- Buyers outside supported regions: The vendor explicitly states this model is not sold worldwide; local availability must be confirmed first.
- Users who prefer always-on fan cooling: iCool mode requires a manual switch to run the fan continuously; those who want constant active cooling must disable the semi-passive mode.
80 PLUS® GOLD Certified
Cybenetics PLATINUM and LAMBDA A Certified*
ATX3.1 & PCIe5.1 Ready
Fully Modular Cable Design
Native 12V-2x6 Connector Dual Color Design
100% Highly Reliable Japanese Capacitors
135mm Striped Axial FDB Fan
iCool Intelligent Fan Control Mode
Built-in 5V BOOST function
Remarkable 10-Year Warranty
*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.
This model may not be sold worldwide. Please contact your local dealer for the availability of this model in your region.
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-1200GW |
| Form Factor | ATX |
| Colour | White |
| Warranty | 10 Years |
Power & Efficiency
| Total Output | 1200W |
|---|---|
| +12V Rail | 100A |
| Efficiency Certification | 80 PLUS Gold |
| Cybenetics Efficiency | PLATINUM |
| Cybenetics Noise | LAMBDA A |
| ATX Standard | ATX 3.1 & PCIe 5.1 Ready |
| Operating Temperature | 0–50°C |
Cables & Connectors
| Modular Design | Fully Modular |
|---|---|
| GPU Connector | Native 12V-2x6 |
| Connector Design | Dual Colour |
Cooling & Components
| Fan Size | 135mm |
|---|---|
| Fan Type | Striped Axial FDB |
| Fan Control | iCool Intelligent Fan Control (semi-passive) |
| Capacitors | 100% Japanese, 105°C rated |
| Dimensions | 150 × 86 × 150 mm |
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.