ASRock SL-1200G 1200W PSU 80+ Gold ATX 3.1 PCIe 5.1
ASRock Steel Legend SL-1200G 1200W ATX Power Supply – 80 PLUS Gold
The ASRock Steel Legend SL-1200G is a flagship 1200W power supply designed for extreme performance systems, high-end gaming rigs, and professional workstations. With 80 PLUS Gold efficiency, Cybenetics Platinum certification, and ATX 3.1 / PCIe 5.1 readiness, it delivers outstanding power stability, efficiency, and future-proof compatibility.
Key Features & Benefits
✔ 1200W Ultra-High Power Output
Built for extreme gaming systems and workstations with multiple high-performance components and GPUs.
✔ ATX 3.1 & PCIe 5.1 Ready
Supports next-generation hardware with native 12V-2x6 connectors and high transient load handling.
✔ Fully Modular Cable Design
Improves airflow and cable management for a cleaner, more efficient system build.
✔ 80 PLUS Gold & Cybenetics Platinum Efficiency
Delivers exceptional power efficiency with reduced energy loss and heat generation.
✔ Cybenetics Lambda A Ultra-Quiet Rating
Engineered for extremely low noise output, ideal for silent high-performance builds.
✔ 135mm Fluid Dynamic Bearing Fan
Advanced cooling solution with long lifespan, reduced noise, and efficient thermal performance.
✔ iCOOL Intelligent Fan Control
- Semi-passive operation at low to medium loads
- Active cooling only when required for optimal noise-performance balance
✔ Premium Japanese 105°C Capacitors
Ensures maximum durability, stability, and long-term reliability under heavy loads.
✔ Native Dual PCIe 5.1 Connectors
Supports modern high-power GPUs with secure dual 12V-2x6 connections.
✔ Built-in 5V Boost Function
Maintains stable voltage delivery for consistent system performance.
✔ 10-Year Warranty
Industry-leading long-term coverage for complete peace of mind.
Technical Specifications
General
- Power Output: 1200W
- Efficiency Rating: 80 PLUS Gold
- Cybenetics Rating: Platinum (ETA) / Lambda A (Noise)
- Form Factor: ATX (ATX 3.1)
- Dimensions: 150 x 150 x 86 mm
Electrical
- AC Input: 100–240V, 50–60Hz
- 12V Output: 100A
- Total Power Excursion: 200%
Cooling
- Fan: 135mm Striped Axial Fluid Dynamic Bearing Fan
- iCOOL Mode: Switchable (semi-passive operation)
Connectors
- 1 x 24-pin ATX
- 1 x 4+4-pin CPU (EPS)
- 1 x 8-pin CPU (EPS)
- 2 x PCIe 5.1 (12V-2x6, dual-colour)
- 2 x PCIe 6+2-pin
- 1 x PCIe 8-pin
- 9 x SATA
- 3 x Peripheral (Molex)
Protection Features
- OCP (Over Current Protection)
- SCP (Short Circuit Protection)
- OVP (Over Voltage Protection)
- UVP (Under Voltage Protection)
- OTP (Over Temperature Protection)
- OPP (Over Power Protection)
Build Quality
- Capacitors: 100% Japanese (105°C rated)
- MTBF: 100,000 hours @ 25°C
Why Choose the ASRock Steel Legend SL-1200G
The SL-1200G is designed for users who need maximum power headroom, premium efficiency, and ultra-quiet operation in one package. It is ideal for extreme gaming setups, multi-GPU systems, and high-end creative workstations.
With top-tier certifications, fully modular cabling, and industry-leading reliability, it delivers a future-ready power solution built for uncompromising performance and long-term stability.