Asus ROG Loki SFX-L 850W PSU Review

The Asus Rog Loki SFX-L 850 is a high-performance small form factor PSU boasting a dead silent operation. In today’s review, I will find out whether my review sample is as silent as it promises. 

Asus has made a considerable effort to enter the PSU market and has released some great PSUs. Since the small form factor market constantly grows, Asus had to have a strong presence. The Rog Loki SFX-L line consists of three members with capacities ranging from 750W to 1000W. They are all certified by Cybenetics with Platinum efficiency ratings and LAMBDA-A and LAMBDA-A+ noise ratings, meaning all three models are silent.

Besides the SFX-L form factor, the Loki unit also features a 12VHPWR connector, and it is ATX v3.0 compatible. For those who like lighting, it has an ARGB-illuminated fan with eight addressable LEDs, supporting Aura sync. To achieve low noise output, Asus used large heatsinks at the internals, which is the proper and only way.


Cybenetics Report


Technical Specifications:
  • Manufacturer (OEM): Great Wall
  • Max Power: 850W
  • Cybenetics Efficiency: [115V] Cybenetics Platinum (89-91%)
  • 80 Plus Efficiency: Platinum
  • Noise: Cybenetics A (20 – 25 dB[A])
  • Compliance: ATX v3.0, SFX-L
  • Alternative Low Power Mode support: Yes
  • Power 12V: 850W
  • Number of 12V rails: One
  • Power 5V + 3.3v: 110W
  • Power 5VSB: 12.5W
  • Cooling: 120mm Double Ball Bearing Fan (CF1225H12D)
  • Semi-Passive Operation: ✓
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 3x PCIe 6+2 pin (2x cables), 1x PCIe 12+4 pin (600W)
  • Peripheral Connectors: 6x SATA (2x cables), 1x 4-pin Molex (4x cables)
  • ATX/EPS Cable Length: 450/550mm
  • Distance between SATA: 190mm/90mm
  • Distance between 4-pin Molex connectors: 100mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 125 mm x 65 mm x 125 mm
  • Weight: 1.09 kg (2.4 lb)
  • Warranty: ten years
  • MSRP (excluding VAT): $375 – $450
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