Asrock Steel Legend SL-850G 850W 80 Plus Gold ATX PSU

ASRock Steel Legend SL-850G | 850W ATX 3.1 Gold PSU

The Asrock Steel Legend SL-850G 850W 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 want reliable power and quiet operation. The standout feature is the iCOOL mode, which keeps the fan off under low loads. This unit suits mid-to-high-end gaming rigs and workstations.

Slim Specifications

ATX 3.1 Compliance and Power Excursion

This PSU meets the ATX 3.1 standard. It handles power excursions up to 200%. This means it can manage sudden spikes from modern graphics cards. Your system stays stable during intense loads. You do not need to oversize your unit for peak power spikes.

Ultra-Quiet Cooling with iCOOL Mode

The unit features a 135mm striped axial FDB fan. It uses iCOOL Intelligent Fan Control. The fan stays off during low to medium loads. This reduces noise and improves energy efficiency. For heavy workloads, you can switch iCOOL off. The fan then runs continuously for consistent cooling. This flexibility suits silent builds and performance-focused systems.

Dual-Colour Connectors for Easy Installation

ASRock includes Classic Green connectors. These provide a clear visual cue. You can see instantly if a cable is fully seated. This reduces installation errors. It helps ensure a secure connection for the motherboard, CPU, and PCIe cables.

High-Quality Components and Safety

The unit uses 105°C Japanese capacitors. These offer long-term reliability and stability. It includes a full suite of protections: OCP, SCP, OVP, UVP, OTP, and OPP. These safeguard your components against power anomalies. The flat cable design aids airflow and cable management.

Box contents

• ASRock Steel Legend SL850GW Power Supply Unit – White
• Native PCIe 12V-2×6 Cable
• Dual Color Design connectors
• iCOOL Intelligent Fan Control Mode (switchable)

Check before you buy

• Confirm your case supports ATX PSUs with 150mm x 150mm x 86mm dimensions.
• Verify your wall outlet uses a standard UK 3-pin plug; this unit uses AC input 100-240V.
• Check your motherboard has enough EPS 12V (4+4pin) connectors; this unit provides two.
• Confirm your graphics card needs a native 12V-2×6 cable or uses 6+2pin PCIe connectors.

Frequently Asked Questions

Q: Does this PSU include a UK power cord?

A: The input is 100-240V. Check with the retailer if a UK 3-pin cable is included.

Q: Is the fan always on?

A: No. iCOOL mode keeps the fan off at low loads. You can switch it off for constant cooling.

Q: What is the warranty period?

A: ASRock offers a 10-year warranty on this unit.

Q: Does it support PCIe 5.1 graphics cards?

A: Yes. It includes a native 12V-2×6 cable for PCIe 5.1 GPUs.

Q: Are the cables flat or round?

A: The cables are flat, aiding cable management and airflow.

The Consultant’s verdict & warranty

This unit suits UK builders needing a reliable, quiet 850W PSU for ATX 3.1 systems. It is ideal for those who value silent operation and easy installation. The 10-year warranty underscores its longevity. Covered by the standard Manufacturer Warranty.