ASROCK 1200W STEEL LEGEND PSU

ASRock 1200W Steel Legend SL-1200G | High-Performance Modular PSU

The ASRock 1200W Steel Legend SL-1200G PSU is a fully modular power supply unit designed for high-end gaming PCs and professional workstations. Built to deliver stable, efficient power with ATX 3.1 and PCIe 5.1 readiness, it supports the latest hardware demands while maintaining quiet operation through advanced cooling features.

Slim Specs Table

Unmatched Efficiency and Quiet Operation

This PSU achieves 80 PLUS Gold certification, ensuring at least 90% efficiency under typical loads. That means less wasted energy and lower heat output. Cybenetics Platinum and Lambda A ratings confirm industry-leading electrical performance and extremely low noise emissions—ideal for silent builds where every decibel matters.

Future-Proof Connectivity and Compatibility

With ATX 3.1 compliance and PCIe 5.1 support, the SL-1200G is ready for next-generation GPUs and CPUs that demand stable, high-current power delivery. The native 12V-2×6 connector with dual-colour design ensures secure, error-free connections to modern graphics cards, protecting your investment against power instability.

Fully Modular Design for Clean Builds

All cables are detachable, letting you install only those you need. This reduces clutter inside your case, improves airflow, and makes upgrades or maintenance far simpler. Whether you’re building a compact rig or a full-tower powerhouse, the modular approach keeps your interior neat and organised.

Reliable Japanese Capacitors and Smart Cooling

ASRock uses 100% highly reliable Japanese capacitors throughout, known for long life and stable performance under load. The 135mm striped fan features intelligent speed control—ramping up only when necessary—so your system stays cool without constant fan noise during lighter tasks.

Box Contents

• ASRock 1200W Steel Legend SL-1200G PSU
• Modular cable set (as per manufacturer)
• Mounting screws
• User manual and warranty card

Note: Exact cable count and types not specified—confirm with retailer if specific connectors are required.

Check Before You Buy

• Confirm the PSU fits your case’s ATX mounting space.
• Verify your GPU and motherboard support ATX 3.1 and PCIe 5.1.
• Check that your total system power draw stays under 1200W.
• Ensure your local mains voltage matches the PSU’s input range.

Frequently Asked Questions

Q: Is this PSU compatible with older ATX motherboards?

A: Yes, it supports standard ATX form factor and will work with older motherboards as well as new ATX 3.1 designs.

Q: Does it come with all necessary cables for a typical gaming PC?

A: It includes a full modular cable set, but exact cable types are not specified—confirm with the seller if you need specific connectors.

Q: What does Cybenetics Lambda A mean?

A: Lambda A is the quietest noise certification level, indicating extremely low acoustic emissions during operation.

Q: Can I use this PSU for a dual-GPU setup?

A: Yes, the 1200W capacity and PCIe 5.1 readiness support multi-GPU configurations, provided your total draw stays within limits.

Q: Is the warranty UK-valid?

A: It is covered by the standard manufacturer warranty, but confirm regional terms with the seller.

The Consultant’s Verdict & Warranty

The ASRock 1200W Steel Legend SL-1200G PSU is a top-tier choice for enthusiasts and professionals who need reliable, efficient, and quiet power delivery. Its combination of 80 PLUS Gold efficiency, Cybenetics Platinum & Lambda A certification, and full modularity makes it ideal for high-performance systems with the latest components. Covered by the standard manufacturer warranty, it offers peace of mind alongside exceptional technical credentials.