Cougar GEX X2 850W 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% 5.332A 1.986A 1.979A 0.982A 84.992 87.776% 0 <6.0 44.54C 0.961
11.888V 5.033V 3.334V 5.09V 96.831 40.14C 114.85V
20% 11.691A 2.982A 2.971A 1.181A 169.92 90.779% 0 <6.0 45.68C 0.973
11.892V 5.03V 3.332V 5.079V 187.179 40.89C 114.82V
30% 18.409A 3.48A 3.467A 1.381A 254.916 91.566% 0 <6.0 46.39C 0.98
11.890V 5.029V 3.331V 5.07V 278.398 41.29C 114.79V
40% 25.131A 3.979A 3.964A 1.581A 339.998 91.56% 0 <6.0 47.26C 0.986
11.890V 5.027V 3.33V 5.06V 371.335 41.72C 114.77V
50% 31.475A 4.975A 4.958A 1.782A 424.783 90.99% 396 <6.0 42.04C 0.989
11.891V 5.025V 3.328V 5.05V 466.843 48.24C 114.73V
60% 37.808A 5.969A 5.953A 1.984A 509.299 90.506% 745 17.4 42.60C 0.991
11.889V 5.026V 3.326V 5.04V 562.729 49.31C 114.7V
70% 44.225A 6.965A 6.949A 2.187A 594.647 89.835% 1187 31.4 43.12C 0.992
11.884V 5.025V 3.324V 5.03V 661.93 50.17C 114.67V
80% 50.649A 7.961A 7.946A 2.29A 679.487 89.079% 1717 41.8 43.56C 0.993
11.878V 5.025V 3.322V 5.022V 762.793 51.57C 114.63V
90% 57.481A 8.458A 8.431A 2.393A 764.892 88.233% 2249 48.5 44.62C 0.994
11.872V 5.024V 3.321V 5.014V 866.899 53.69C 114.6V
100% 64.027A 8.96A 8.948A 3.002A 849.719 87.361% 2266 48.5 45.12C 0.994
11.870V 5.022V 3.319V 4.997V 972.648 55.22C 114.56V
110% 70.426A 9.962A 10.038A 3.006A 934.322 86.326% 2283 48.8 46.88C 0.995
11.871V 5.019V 3.317V 4.99V 1082.315 57.82C 114.53V
CL1 0.116A 11.986A 11.946A 0A 101.293 83.486% 0 <6.0 46.21C 0.974
11.908V 5.022V 3.324V 5.098V 121.327 40.73C 114.83V
CL2 0.116A 19.972A 0A 0A 101.342 81.808% 462 7.3 40.68C 0.973
11.910V 5.005V 3.329V 5.101V 123.875 47.73C 114.83V
CL3 0.116A 0A 19.907A 0A 67.396 75.835% 0 <6.0 49.68C 0.956
11.912V 5.013V 3.316V 5.1V 88.871 40.58C 114.85V
CL4 71.576A 0A 0A 0A 849.53 87.907% 2270 48.6 45.20C 0.994
11.869V 5.026V 3.329V 5.057V 966.403 56.01C 114.57V

Load regulation is tight at 12V in the 1000W unit, but this isn’t true for the 850W model. This could be an issue with the specific sample.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 17.1 mV 13.7 mV 15.2 mV 9.3 mV Pass
20% Load 19.0 mV 13.6 mV 14.9 mV 8.5 mV Pass
30% Load 15.7 mV 14.3 mV 16.4 mV 9.0 mV Pass
40% Load 15.5 mV 14.6 mV 14.8 mV 9.8 mV Pass
50% Load 16.4 mV 16.3 mV 16.6 mV 10.5 mV Pass
60% Load 15.2 mV 15.6 mV 16.6 mV 10.4 mV Pass
70% Load 14.7 mV 16.0 mV 17.0 mV 11.3 mV Pass
80% Load 16.2 mV 17.6 mV 17.9 mV 11.9 mV Pass
90% Load 16.7 mV 18.7 mV 18.6 mV 11.2 mV Pass
100% Load 27.9 mV 18.8 mV 19.8 mV 12.8 mV Pass
110% Load 27.8 mV 19.4 mV 18.0 mV 12.1 mV Pass
Crossload 1 30.0 mV 21.5 mV 20.4 mV 16.0 mV Pass
Crossload 2 17.6 mV 31.3 mV 22.8 mV 15.7 mV Pass
Crossload 3 14.5 mV 20.2 mV 21.0 mV 15.6 mV Pass
Crossload 4 26.3 mV 15.8 mV 15.4 mV 17.4 mV Pass

Ripple suppression is good but not as good as competing offerings, especially at 12V.

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