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Compact SFX-L power supply with matte black housing and 120mm ARGB fan visible through vented side

ASUS

ASUS ROG-LOKI-850P-SFX-L-GAMING power supply

SKU CH-6N17-DS5X3 MPN ROG-LOKI-850P-SFX-L-GAMING

SFX-L form-factor 850 W unit with 80 PLUS Platinum efficiency, fully modular cables, a 120 mm PWM ARGB fan certified below 25 dB.

  • TypeATX 3.0 Compatible / ATX12V
  • Maximum Power850 W
  • Main Connector24Pin
  • PCI-Express Connector3 x 6+2-Pin
  • SATA Power Connector6
  • Max PSU Length125 mm

Options SFX 80+ Platinum (850W) Black

  • Lower temperatures and longer component life from ROG heatsinks covering critical parts
  • Quiet operation certified below 25 dB by Lambda A rating
  • Up to 92 % efficiency with 80 PLUS Platinum certification reducing heat and noise
  • PCIe Gen 5 graphics support via included 16-pin cable delivering up to 600 W
  • Synchronised lighting across the build with Aura Sync compatible addressable RGB

SFX-L 850 W Platinum PSU

The ASUS ROG Loki SFX-L delivers 850 W of continuous power in a 125 mm long fully modular chassis. It targets compact gaming builds that need ATX 3.0 compliance and a native 16-pin PCIe Gen 5 connector for modern graphics cards. The 80 PLUS Platinum rating guarantees up to 92 % efficiency across typical loads.

Lambda A noise and axial-tech cooling

A 120 mm PWM ARGB fan keeps acoustics below 25 dB at low to medium load, earning Lambda A certification. ROG heatsinks cover critical components to lower internal temperatures and extend unit lifespan. The fan curve stays quiet during everyday workloads while maintaining thermal headroom for sustained output.

Compact footprint with ATX adapter included

The 125 x 125 x 63.5 mm form factor fits SFX-L bays and, with the bundled bracket, standard ATX cut-outs. Full modular cabling includes two CPU 4+4-pin leads, three PCIe 8-pin leads, one PCIe Gen 5 16-pin lead, six SATA and four peripheral connectors. Aura Sync RGB integration synchronises lighting with compatible motherboards.

Highlights

  • Lower temperatures and longer component life from ROG heatsinks covering critical parts
  • Quiet operation certified below 25 dB by Lambda A rating
  • Up to 92 % efficiency with 80 PLUS Platinum certification reducing heat and noise
  • PCIe Gen 5 graphics support via included 16-pin cable delivering up to 600 W
  • Synchronised lighting across the build with Aura Sync compatible addressable RGB

Specifications

BrandASUS
SeriesROG LOKI
ModelROG-LOKI-850P-SFX-L-GAMING
TypeATX 3.0 Compatible / ATX12V
Maximum Power850 W
Main Connector24Pin
PCI-Express Connector3 x 6+2-Pin
SATA Power Connector6
Max PSU Length125 mm
ModularFull Modular
Energy-Efficient80 PLUS PLATINUM Certified
ProtectionOPP/OVP/UVP/SCP/OCP/OTP
Input Voltage100 - 240 V
Output+3.3V@20A, +5V@20A, [email protected] , [email protected] , [email protected]
ConnectorsMB 24/20-pin x 1
CPU 4+4-pin x 2
PCI-E 16-pin x 1
PCI-E 8-pin x 3
SATA x 6
PERIPHERAL x 4
Dimensions125 x 125 x 63.5 mm
Weight1.815kg (single PSU)
Package ContentPower Cord x 1
Motherboard Power Cable x 1 (450mm)
CPU Cable x 2 (550mm)
PCI-E Gen 5 16-pin Cable x 1 (450mm)
PCI-E 1-to-1 Cable x 1 (450mm)
PCI-E 1-to-2 Cable x 1 (450mm)
SATA 1-to-3 Cable x 2 (300+200+100mm)
Peripheral 1-to-4 Cable x 1 (300+100+100+100mm)
Addressable RGB Cable x 1 (800mm)
User Manual x 1
ATX to SFX adapter bracket x 1
Shipping weight2.72 kg
Package size330 × 229 × 102 mm

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Questions about this item

Will this 125 mm long unit fit in a standard SFX-L case?

The housing is 125 mm deep and an ATX-to-SFX bracket is included, so it matches the SFX-L form factor used by most current small-form-factor cases.

Can the single 16-pin cable deliver 600 W to a PCIe 5.0 graphics card without adapters?

Yes, the bundled 16-pin cable is rated for up to 600 W and plugs directly into the PSU, meeting ATX 3.0 requirements for Gen 5 cards.

How loud is the 120 mm fan under typical gaming loads?

Lambda A certification confirms noise stays below 25 dB, and the PWM fan stops completely at low load for silent idle operation.

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