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Compact SFX-L unit with matte black casing and 120mm ARGB fan visible

ASUS

ASUS ROG Loki SFX-L 850W Platinum Power Supply

SKU CH-2SKN-BJZMK

SFX-L 850 W platinum unit with 120 mm ARGB fan, PCIe 5.0 and ATX 3.0 support

  • TypeSFX
  • 80 PLUS Platinum efficiency keeps waste heat low
  • 850 W output handles demanding PCIe 5.0 builds
  • 120 mm ARGB fan syncs with Aura Sync lighting
  • SFX-L form factor fits compact 125 x 125 x 63.5 mm cases
  • 100–240 V input works worldwide with included US cable

SFX-L 850W Platinum power supply for compact builds

This SFX-L unit delivers 850W with 80 PLUS Platinum efficiency in a 125 x 125 x 63.5 mm form factor. It targets builders assembling high-performance small-form-factor systems that demand full modular cabling and modern power standards. The 120mm ARGB fan supports Aura Sync lighting control for coordinated aesthetics.

850W capacity with ATX 3.0 and PCIe 5.0 headroom

The 850W rating comfortably handles current-generation GPUs and CPUs through a native 12VHPWR connection compliant with ATX 3.0 and PCIe 5.0. Platinum efficiency reduces waste heat under sustained loads. Systems planning multiple flagship GPUs or extreme overclocking headroom will exceed the usable output of this single unit.

Bundled US power cable

As a Chinese-market model, the package includes a US-standard power adapter cable for immediate domestic use. The 120mm ARGB fan connects to standard 5V addressable headers, enabling synchronised lighting across compatible motherboards and peripherals via Aura Sync software. No additional cables or controllers are required for basic illumination.

Highlights

  • 80 PLUS Platinum efficiency keeps waste heat low
  • 850 W output handles demanding PCIe 5.0 builds
  • 120 mm ARGB fan syncs with Aura Sync lighting
  • SFX-L form factor fits compact 125 x 125 x 63.5 mm cases
  • 100–240 V input works worldwide with included US cable

Specifications

TypeSFX

Questions about this item

Will the SFX-L size of this 850W unit fit the same bracket as my old SFX power supply?

This model measures 125 x 125 x 63.5 mm, which is the SFX-L form factor; it is longer than a standard SFX unit, so verify your case clearance before installing.

How can I confirm the 80 PLUS Platinum efficiency is active after I install the PSU?

The 120mm ARGB fan spins only when the load exceeds the zero-RPM threshold, so the fan staying idle at low power draw is normal behaviour for this design.

Does the package include the U.S. standard power adapter cable mentioned for this Chinese model?

Yes, a U.S. standard power adapter cable is included; all other modular cables attach to the fully modular connectors on the unit itself.

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