ASUS ROG Loki SFX-L 850W Platinum power supply unit 24-pin ATX Black, Silver

The ASUS ROG Loki SFX-L 850W Platinum is a compact, high-efficiency power supply designed for small form factor (SFF) PC builds. Delivering 850 W of continuous power with 80 PLUS Platinum efficiency, this fully modular PSU supports ATX 3.0 power requirements and includes a 16-pin PCIe cable for up to 600 W to PCIe Gen5 graphics. A 120 mm ARGB-illuminated fan and ROG heatsinks help maintain low operating temperatures and extended 0 dB operation.

Advantages

High energy efficiency certified by 80 PLUS Platinum combined with low-ESR Japanese capacitors reduces heat and improves long-term reliability. ATX 3.0 compatibility ensures stable voltage and current delivery for next-generation components, while the bundled 16-pin PCIe cable enables powerful GPU support in SFF systems. The compact SFX-L form factor and fully modular cabling simplify installation in constrained cases, and ARGB lighting with Aura Sync offers synchronized illumination across compatible ASUS/ROG components.

Suitable for

• Small form factor (SFF) gaming and workstation builds
• Systems using PCIe Gen5 graphics that require up to 600 W via 16-pin connector
• Enthusiast builds that prioritise high efficiency and quiet operation
• Users who want modular cabling for tidy cable management

Key specifications

• Total power: 850 W
• 80 PLUS certification: 80 PLUS Platinum
• Form factor: SFX-L
• Motherboard power connector: 24-pin ATX
• Fan diameter: 120 mm (ARGB, addressable LEDs)
• ATX standard: ATX 3.0 compatible
• Cabling: Fully modular; includes 16-pin PCIe cable
• Weight: 1.815 kg
• Colour: Black, Silver

How to use

Install the ROG Loki SFX-L 850W Platinum into a compatible SFX-L or SFX adapter bracket following your case manufacturer’s instructions. Connect the 24-pin ATX motherboard cable and other modular connectors to the CPU, storage, and PCIe devices as required. If using a PCIe Gen5 graphics card that supports the 16-pin connector, attach the supplied 16-pin PCIe cable to deliver up to 600 W. Configure Aura Sync lighting via an ASUS/ROG motherboard and compatible GPU if full lighting integration and Smart Mode GPU-temperature effects are desired.

Recommendations

To maintain quiet 0 dB operation and long component life, ensure adequate case ventilation and use quality cables. If the 16-pin PCIe connector is not used for lighting sync, the fan lighting defaults to a rainbow effect. For Aura Sync and Smart Mode lighting that reflects GPU temperature, use compatible ASUS or ROG motherboard and graphics card models.