ASUS ROG LOKI SFX-L 850W Platinum White Edition PSU
ASUS ROG
ASUS ROG LOKI SFX-L 850W Platinum White Edition PSU
The ASUS ROG LOKI SFX-L 850W Platinum White Edition is a compact SFX-L power supply designed for small-form-factor builds that demand high wattage without sacrificing efficiency or noise control. It combines 80 PLUS Platinum certification with ATX 3.0 compliance to support next-generation graphics cards and components in tight spaces.
Why this product
ATX 3.0 ready with 600W PCIe Gen 5.0 cable
Fully compliant with ATX 3.0 voltage and current standards. Includes a 16-pin PCIe cable capable of delivering up to 600W directly to PCIe 5.0 graphics cards.
80 PLUS Platinum and Cybenetics Platinum certified
Achieves high efficiency through low-ESR Japanese capacitors, reducing power loss, heat generation and operating noise while improving reliability.
Certified quiet operation below 25 dB
Lambda A Certification confirms low noise levels. 0dB technology stops the fan entirely under light loads, and ROG heatsinks extend quiet operation by keeping temperatures in check.
SFX-L form factor for small builds
Measures just 125 × 125 × 63.5 mm, fitting tight case constraints while delivering 850W. Soft etched cables bend easily for cable management.
ARGB fan with Aura Sync lighting
120 mm fan with eight addressable LEDs syncs with ASUS Aura Sync for coordinated RGB effects across your build.
10-year warranty
Backed by a decade of coverage with >120,000 hours MTBF at 25°C.
- Wattage850W
- Form FactorSFX-L
- Efficiency80 PLUS Platinum
- Noise CertificationLambda A (below 25 dB)
- Warranty10 years
- Weight1.815 kg
- SKUASU-2568
- EAN4711081722229
- SFX-L cases and small-form-factor PC enclosures (125 × 125 × 63.5 mm footprint)
- PCIe Gen 5.0 graphics cards via bundled 16-pin connector supporting up to 600W delivery
- ATX 3.0 compliant motherboards and next-generation components requiring tighter voltage regulation
- Standard ATX power connectors for 3.3V, 5V, 12V, −12V and 5Vsb rails; verify your motherboard and all components match these output voltages
- ATX and E-ATX form factor cases (this unit requires SFX-L space)
Best for
- Small-form-factor gaming builds needing high wattage
- Builders prioritising low noise and fan silence
- Systems with PCIe Gen 5.0 graphics cards requiring up to 600W delivery
- Users seeking high efficiency to reduce power draw and heat output
Trade-offs
- Large cases: SFX-L footprint (125 × 125 × 63.5 mm) is designed for compact enclosures, not standard ATX chassis
- Budget-constrained builds: Platinum efficiency and Cybenetics certification command a higher price than Bronze or Gold units
- Older PCIe Gen 4 systems: While compatible, the 16-pin PCIe Gen 5.0 cable and ATX 3.0 features are designed for next-gen hardware
The Quietest SFX-L PSU
Taking after the ROG Thor, the ROG Loki SFX-L 850W Platinum White Edition brandishes the same enthusiast-grade components and features, all packed into an SFX-L form factor. Boasting quiet operation and high performance, the Loki is primed to power your next SFF build.
ROG Heatsinks — Cool under pressure
ROG heatsinks facilitate lower temperatures, longer component lifespan, and extended 0dB operation.
80 PLUS Platinum & Cybenetics Platinum Certified — Effortless output
The ROG Loki 850W Platinum White Edition achieves 80 PLUS Platinum and Cybenetics Platinum certifications by leveraging low-ESR Japanese capacitors that deliver stability and efficiency, leading to improved power consumption, heat generation, acoustics and reliability.
ATX 3.0 Compatible — Step into the future
ATX 3.0 ushers in tighter voltage and current regulation guidelines for next-gen hardware - and ROG Loki steps ahead of the curve by being fully compliant. A 16-pin PCIe cable ripe for piping up to 600W of power to PCIe Gen 5.0 graphics cards is bundled with the PSU, bringing large-scale capabilities to SFF rigs.
ARGB-illuminated Fan & Aura Sync — Magical glow
The Loki's 120 mm fan features eight addressable LEDs ready to be customized with Aura Sync to create coordinated lighting patterns across your build.
Etched Cables
Made from a soft premium material, these etched cables can be bent easily during installation, and they operate at temperatures 50°C lower than the safety limit when bent for cable management.
General
| Brand | ASUS ROG |
|---|---|
| Form Factor | SFX-L |
| Dimensions | 125 × 125 × 63.5 mm |
| Weight | 1.815 kg |
Power & Efficiency
| Total Output | 850W |
|---|---|
| Efficiency Rating | 80 PLUS Platinum |
| Cybenetics Certification | Platinum |
| ATX Standard | ATX 3.0 |
| Active PFC | Yes |
Output Voltages & Rails
| +3.3V Maximum Load | 20A (110W combined) |
|---|---|
| +5V Maximum Load | 20A (110W combined) |
| +12V Maximum Load | 70.8A (850W combined) |
| −12V Maximum Load | 0.8A (9.6W) |
| +5Vsb Maximum Load | 2.5A (12.5W) |
Cooling & Acoustics
| Fan | 1× ARGB-Illuminated 120 mm Axial-Tech |
|---|---|
| Fan Bearing | Dual Ball |
| PWM Control | Yes |
| 0dB Technology | Yes (fan stops at low load) |
| Noise Certification | Lambda A (below 25 dB) |
| ARGB Sync | ASUS Aura Sync ready |
Protection & Reliability
| Protection Features | OPP, OVP, UVP, SCP, OCP, OTP |
|---|---|
| MTBF | >120,000 hours @ 25°C |
| Warranty | 10 years |
| RoHS Compliant | Yes |
Input & Connectors
| AC Input Range | 100–240 Vac |
|---|---|
| PCIe Gen 5.0 Cable | 16-pin (600W delivery, included) |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.