Asrock Steel Legend SL-650G 650W 80 Plus Gold ATX PSU

Asrock Steel Legend SL-650G | 650W ATX 3.1 PSU

The Asrock Steel Legend SL-650G 650W ATX Power Supply Unit, 80 Plus Gold Certified, 120mm Silent Cooling Fan, High Efficiency PSU is built for mainstream UK systems. It targets builders who need reliable power with minimal noise. The unit offers a dual colour design for easy cable checks. It also features a smart fan control mode for efficiency.

Slim Specifications

Intelligent iCOOL Fan Control

This PSU includes a physical iCOOL mode switch. When switched ON, the fan stays off during low to medium loads. This reduces system noise significantly. It also improves energy efficiency during idle times. When switched OFF, the fan runs continuously. This provides consistent cooling for heavy workloads. You can choose between silence and sustained performance.

Dual Colour Connectors for Safety

The unit features a dual colour design. ASRock Classic Green connectors show clear visual confirmation. You can see instantly if a connector is fully seated. This reduces the risk of poor connections. It helps prevent hardware issues during assembly. The design simplifies the build process for all users.

Certified Efficiency and Acoustics

The Steel Legend SL-650G holds 80 PLUS Gold certification. It also earns Cybenetics Platinum and Lambda A+ ratings. These certifications verify high energy efficiency and ultra-quiet operation. The 135mm Fluid Dynamic Bearing fan uses a herringbone structure. This design minimises noise and extends the fan’s lifespan. Note that packaging badges may vary. Always check the official Cybenetics website for the latest certification details.

Build Quality and Safety

This PSU uses 105°C Japanese-made capacitors. These components ensure a prolonged lifespan and stable performance. It includes a full suite of protections. These cover OCP, SCP, OVP, UVP, OTP, and OPP. The unit handles power excursions up to 200%. This meets ATX 3.1 standards for transient loads. Flat cables aid in tidy routing within a case.

Box contents

• ASRock Steel Legend SL650G Power Supply Unit
• Native PCIe 12V-2×6 Cable
• AC Power Cord (Note: UK plug type not specified; verify before purchase)

Check before you buy

• Confirm the AC power cord has a UK 3-pin plug. The input supports 100-240V, but the cable is region-specific.
• Verify your case supports ATX PSU dimensions (150 x 150 x 86 mm).
• Ensure your motherboard has standard ATX PSU mounting points.
• Check you have enough clearance for flat cables in your chosen case layout.

Frequently Asked Questions

Q: Does this PSU support the latest graphics cards?

A: It includes two PCIe 6+2pin connectors. It does not have a native 12V-2×6 connector, but you can use adapters.

Q: Is the fan always running?

A: No. The iCOOL mode allows the fan to stop under low loads for silent operation.

Q: What does ATX 3.1 mean for my build?

A: It ensures the PSU can handle high power transients from modern GPUs, up to 200% of its rated power.

Q: Are all cables flat?

A: Yes. The unit uses flat cables to help with case airflow and cable management.

Q: Is the Cybenetics badge on the box?

A: Packaging may vary. Some units might not show the badge. Check the official Cybenetics site for verification.

Asrock Steel Legend SL-650G | The Consultant’s Verdict

This PSU is ideal for UK system builders creating a quiet, efficient mainstream PC. It suits users who value low noise and long-term reliability. The 10-year warranty offers strong peace of mind. The ATX 3.1 support ensures compatibility with current and near-future components. Covered by the standard Manufacturer Warranty.