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White SFX-L power supply with 120mm ARGB fan and modular cables visible

ASUS

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

SKU CH-YW1W-6T3V5 MPN ROG-LOKI-850P-SFX-L-WHITE-GAMING

An 850 W SFX-L unit with 80 PLUS Platinum efficiency, ATX 3.0 compliance, a 16-pin PCIe 5.0 cable and a 120 mm PWM ARGB fan certified below 25 dB

  • Max wattage850 W
  • Modular cablingFull Modular
  • PSU length limit125 mm
  • Efficiency certification80 PLUS PLATINUM Certified
  • Built-in protectionOPP/OVP/UVP/SCP/OCP/OTP
  • Supply voltage100–240 V

Model SFX 80+ Platinum (850W) White

  • 850 W output supports high-end GPU and CPU builds
  • 80 PLUS Platinum certification delivers up to 92 % efficiency
  • 120 mm PWM ARGB fan runs below 25 dB Lambda A noise level
  • ATX 3.0 compliant 16-pin cable provides up to 600 W for PCIe 5.0 graphics cards
  • Fully modular SFX-L design at 125 mm length fits compact cases

Compact 850W SFX-L power supply

This SFX-L unit delivers 850 W of continuous power in a 125 mm long chassis. It targets builders of small-form-factor systems who need high output for modern graphics cards. Full modular cabling keeps the interior tidy and improves airflow in tight cases.

Bundled cables and ARGB sync cable

The package includes a PCIe Gen 5 16-pin cable rated for 600 W, two CPU cables, multiple PCIe 8-pin cables and SATA cables for storage drives. An addressable RGB cable connects the 120 mm fan lighting to a compatible motherboard header for Aura Sync control.

Check case clearance and motherboard headers

Verify that your case accepts a 125 mm long SFX-L power supply and that an ATX-to-SFX adapter bracket is not required. Confirm the motherboard provides a 5 V addressable RGB header if you plan to synchronise the fan lighting.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $210.99
Pricier than about 65% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameASUS
Model nameROG-LOKI-850P-SFX-L-WHITE-GAMING
Product typeATX 3.0 Compatible / SFX
Ports & slots
Output type+3.3 V@20A, +5 V@20A
Connection typesMB 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
Power
Max wattage850 W
Modular cablingFull Modular
Efficiency certification80 PLUS PLATINUM Certified
Built-in protectionOPP/OVP/UVP/SCP/OCP/OTP
Supply voltage100–240 V
Size & build
Product dimensions125 × 125 × 63.5 mm
Product weight1.815kg (single PSU)
Shipping weight2.43 kg
Package size284 × 191 × 99 mm
Compatibility
PSU length limit125 mm

Other versions of this model

3 more in the same range

Questions about this item

When will the 120 mm PWM ARGB fan need replacement?

The fan uses axial-tech bearings and PWM control; typical lifespan exceeds several years of continuous operation before bearing wear requires a swap

What limit appears first during sustained 850 W load?

The 80 PLUS Platinum 92 % efficiency ceiling means waste heat becomes the bottleneck before any protection circuit trips

How loud and hot does the unit get running all day?

Lambda A certification confirms noise stays below 25 dB, while ROG heatsinks keep component temperatures low enough to maintain that acoustic level continuously

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