XPG KYBER 850W ATX v3.1 PSU Review

The XPG Kyber 850W is an affordable, Platinum efficiency in the Cybenetics scheme, compatible with the ATX v3.1 spec, utilizing CWT’s GPW platform. If you don’t like native/fixed cables, better look elsewhere. To keep the price low, XPG decided to ditch modular cables. 

To address the mid-PSU category needs, XPG released the Kyber line, which consists of three members with capacities ranging from 650W to 850W. I will look at the higher-capacity member of the line in this review, which achieves Cybenetics Platinum efficiency. With only 140mm depth, the footprint is compact, allowing for an easy installation despite the fixed cables, which always make things harder.

The Kyber line claims compatibility with the ATX v3.0 spec, but it is compatible, in fact, with the ATX v3.1 spec since the latter requires a lower hold-up time period. It is weird; in all the years I have reviewed PSUs, it is the first time that a newer spec is looser in a section than its predecessor. I believe the hold-up time should remain the same, at 17ms, and not drop at 12ms, giving more headroom to the PSU to survive ultra-short power cuts.

With an MSRP close to $110, the Kyber 850 is expensive, given its capacity and the fact that it doesn’t feature any modular cables. XPG will have a tough time selling PSUs with native cables at that price, given that the Thermaltake GX3 non-modular model with similar capacity costs less, at 90 dollars.


Technical Specifications:
  • Manufacturer (OEM): Channel Well Technology
  • Max Power: 850W
  • Cybenetics Efficiency: [115V] Cybenetics Platinum (89-91%)
  • 80 Plus Efficiency: Gold
  • Noise [115V]: Cybenetics Standard++ (30-35 dB[A])
  • Compliance: ATX12V v3.0 (claimed), EPS 2.92
  • Operating Temperature (Continuous Full Load): 0 – 40°C
  • Alternative Low Power Mode support: Yes
  • Power 12V combined: 846W
  • Number of 12V rails: 1
  • Power 5V + 3.3v: 110W
  • Power 5VSB: 15W
  • Cooling: 120mm Fluid Dynamic Bearing Fan (DF1202512FDHN)
  • Semi-Passive Operation: ✗
  • Modular Design: No
  • High Power Connectors: 2x EPS (1x cable), 2x PCIe 6+2 pin (1x cable),  1x PCIe 12+4 pin (600W)
  • Peripheral Connectors: 6x SATA (2x cables), 2x 4-pin Molex (2x cables)
  • ATX Cable Length: 650mm
  • EPS Cable Length:670mm + 150mm
  • 6+2 pin PCIe Cable Length: 640mm + 150mm
  • 12+4 pin PCIe Cable Length: 600mm
  • Distance between SATA / 4-pin Molex: 150mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 140mm
  • Weight: 1.9 kg (4.19 lb)
  • Warranty: five-years
  • MSRP (excluding VAT): $110

Power Specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 20 20 70.5 3 0.3
Watts 110 846 15 3.6
Total Max. Power (W) 850
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One thought on “XPG KYBER 850W ATX v3.1 PSU Review

  1. I am unsure if many users will opt to pay 110 dollars for a native-cables-only PSU in 2024, given that with 10-15 dollars more, they can get a fully modular ATX v3.x compliant (e.g., the Thermaltake GF3 A3 850).

    On page 11, I think there’s a typo in the thermaltake model’s name (GF A3 vs GF3 A3)

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