XPG KYBER 850W ATX v3.1 PSU Review

Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.294A 1.994A 2.002A 0.987A 84.997 87.162% 866 19.2 34.12C 0.959
11.974V 5.014V 3.297V 5.068V 97.516 38.37C 114.81V
20% 11.609A 2.994A 3.006A 1.188A 169.922 90.443% 871 19.3 34.57C 0.973
11.976V 5.01V 3.294V 5.052V 187.879 39.21C 114.79V
30% 18.287A 3.495A 3.509A 1.39A 254.922 91.201% 875 19.3 35.10C 0.978
11.969V 5.007V 3.291V 5.036V 279.514 40.27C 114.76V
40% 24.981A 3.996A 4.014A 1.594A 340.007 91.349% 879 19.4 35.75C 0.979
11.962V 5.004V 3.289V 5.019V 372.209 41.56C 114.73V
50% 31.312A 5A 5.023A 1.8A 424.8 91.026% 884 19.5 36.37C 0.978
11.954V 5.001V 3.285V 5.001V 466.678 42.59C 114.7V
60% 37.630A 6.003A 6.033A 2A 509.294 90.521% 888 19.6 36.82C 0.979
11.946V 4.998V 3.282V 4.983V 562.627 43.73C 114.67V
70% 44.024A 7.008A 7.044A 2.216A 594.663 89.77% 1184 25.2 37.42C 0.981
11.938V 4.995V 3.28V 4.963V 662.427 44.82C 114.64V
80% 50.428A 8.001A 8.057A 2.325A 679.433 88.938% 1618 37.3 37.81C 0.983
11.930V 4.991V 3.276V 4.947V 763.94 46.21C 114.61V
90% 57.244A 8.521A 8.554A 2.433A 764.897 88.194% 1955 43.4 38.84C 0.985
11.921V 4.987V 3.273V 4.932V 867.294 47.98C 114.58V
100% 63.809A 9.028A 9.081A 3.061A 849.763 87.197% 2268 45.2 39.43C 0.986
11.911V 4.984V 3.271V 4.901V 974.53 49.21C 114.55V
110% 70.239A 10.038A 10.192A 3.071A 934.36 86.233% 2269 45.2 40.03C 0.987
11.903V 4.981V 3.267V 4.886V 1083.531 50.88C 114.5V
CL1 0.116A 13.271A 13.337A 0A 111.299 83.63% 896 19.7 34.19C 0.969
11.973V 4.989V 3.277V 5.076V 133.087 44.61C 114.81V
CL2 0.116A 20.04A 0A 0.001A 101.337 82.468% 895 19.7 34.46C 0.965
11.975V 4.987V 3.289V 5.083V 122.882 40.20C 114.8V
CL3 0.116A 0A 20.135A 0A 67.398 76.557% 876 19.3 34.09C 0.956
11.972V 5.007V 3.278V 5.084V 88.037 40.44C 114.82V
CL4 71.278A 0A 0A 0.001A 849.513 88.175% 2267 45.1 39.18C 0.987
11.919V 5.007V 3.288V 4.993V 963.448 50.19C 114.55V

Load regulation is within 1% on all major rails, so it is tight enough.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 10.6 mV 10.1 mV 25.3 mV 9.9 mV Pass
20% Load 29.1 mV 10.9 mV 25.0 mV 12.3 mV Pass
30% Load 26.5 mV 11.6 mV 26.2 mV 14.6 mV Pass
40% Load 20.2 mV 12.7 mV 30.1 mV 14.3 mV Pass
50% Load 19.5 mV 13.5 mV 27.3 mV 16.8 mV Pass
60% Load 22.4 mV 14.0 mV 27.7 mV 18.9 mV Pass
70% Load 25.9 mV 17.0 mV 28.9 mV 26.0 mV Pass
80% Load 29.3 mV 19.3 mV 30.3 mV 29.0 mV Pass
90% Load 32.8 mV 20.5 mV 31.2 mV 22.6 mV Pass
100% Load 47.8 mV 21.8 mV 42.2 mV 27.3 mV Pass
110% Load 53.0 mV 25.2 mV 43.4 mV 31.0 mV Pass
Crossload 1 64.0 mV 19.5 mV 35.2 mV 9.8 mV Pass
Crossload 2 39.4 mV 25.8 mV 25.9 mV 13.0 mV Pass
Crossload 3 29.5 mV 15.1 mV 30.5 mV 9.5 mV Pass
Crossload 4 34.6 mV 17.5 mV 43.3 mV 17.2 mV Pass

Ripple suppression is decent on all rails but 3.3V, where it is mediocre, especially at 115V.

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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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