Cooler Master GX III 1050W ATX v3.0 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% 6.908A 1.989A 1.974A 0.993A 104.942 83.772% 874 26.1 40.26C 0.976
12.065V 5.027V 3.343V 5.033V 125.295 44.49C 114.83V
20% 14.848A 2.99A 2.97A 1.196A 209.933 91.110% 877 26.1 40.60C 0.994
12.057V 5.018V 3.334V 5.018V 230.37 45.21C 114.79V
30% 23.150A 3.493A 3.474A 1.399A 314.944 91.806% 935 28.1 41.07C 0.996
12.047V 5.01V 3.325V 5.002V 343.062 46.22C 114.76V
40% 31.431A 3.999A 3.98A 1.604A 419.534 91.675% 1073 31.4 41.61C 0.997
12.037V 5.002V 3.317V 4.987V 457.619 47.12C 114.73V
50% 39.443A 5.008A 4.989A 1.811A 524.855 91.304% 1255 35.0 42.26C 0.998
12.026V 4.993V 3.307V 4.971V 574.885 48.27C 114.68V
60% 47.400A 6.02A 6.004A 2A 629.29 90.729% 1432 38.5 42.58C 0.998
12.016V 4.984V 3.298V 4.955V 693.614 49.13C 114.65V
70% 55.439A 7.036A 7.025A 2.228A 734.744 89.983% 1643 41.5 43.35C 0.998
12.006V 4.975V 3.289V 4.938V 816.591 50.39C 114.61V
80% 63.489A 8.002A 8.051A 2.335A 839.285 89.113% 1837 44.4 43.71C 0.998
11.996V 4.967V 3.279V 4.925V 941.824 51.81C 114.57V
90% 71.954A 8.571A 8.562A 2.443A 944.939 88.218% 2049 47.1 44.22C 0.998
11.987V 4.959V 3.27V 4.912V 1071.096 53.26C 114.53V
100% 80.162A 9.09A 9.107A 3.074A 1049.748 87.227% 2212 47.6 45.19C 0.998
11.976V 4.95V 3.261V 4.88V 1203.459 55.28C 114.49V
110% 88.255A 10.118A 10.242A 3.081A 1154.372 86.193% 2204 47.6 46.76C 0.998
11.966V 4.941V 3.251V 4.869V 1339.238 57.70C 114.44V
CL1 0.116A 14.466A 14.381A 0A 121.299 80.887% 1038 30.6 40.17C 0.987
12.059V 4.991V 3.317V 5.057V 149.953 45.67C 114.83V
CL2 0.115A 20.017A 0A 0A 101.364 78.394% 944 28.2 39.93C 0.979
12.064V 4.995V 3.339V 5.064V 129.288 47.01C 114.84V
CL3 0.115A 0A 19.867A 0A 67.384 72.380% 876 26.1 40.15C 0.953
12.061V 5.025V 3.322V 5.06V 93.071 49.23C 114.85V
CL4 87.579A 0A 0A 0A 1049.517 88.047% 2140 47.5 45.88C 0.998
11.984V 4.983V 3.285V 4.995V 1191.971 56.84C 114.5V

Load regulation is within 1% at 12V but is still not competitive.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 18.2 mV 8.6 mV 12.3 mV 5.3 mV Pass
20% Load 15.6 mV 8.2 mV 11.5 mV 5.2 mV Pass
30% Load 17.2 mV 9.4 mV 11.6 mV 6.1 mV Pass
40% Load 20.5 mV 12.0 mV 12.1 mV 5.9 mV Pass
50% Load 23.4 mV 9.3 mV 12.6 mV 7.3 mV Pass
60% Load 26.8 mV 10.2 mV 13.3 mV 6.7 mV Pass
70% Load 27.4 mV 9.9 mV 13.4 mV 7.7 mV Pass
80% Load 29.3 mV 10.6 mV 14.4 mV 7.7 mV Pass
90% Load 30.2 mV 10.8 mV 14.8 mV 8.0 mV Pass
100% Load 33.8 mV 12.5 mV 18.7 mV 10.6 mV Pass
110% Load 36.0 mV 13.3 mV 20.2 mV 12.7 mV Pass
Crossload 1 20.2 mV 11.8 mV 16.3 mV 10.5 mV Pass
Crossload 2 16.9 mV 13.7 mV 12.6 mV 8.7 mV Pass
Crossload 3 63.1 mV 9.3 mV 15.5 mV 10.3 mV Pass
Crossload 4 36.1 mV 10.6 mV 17.1 mV 11.8 mV Pass

Ripple suppression is decent but not competitive at 12V.

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2 thoughts on “Cooler Master GX III 1050W ATX v3.0 PSU Review

  1. It is Platinum in Cybenetics, while Gold in 80 PLUS. Cybenetics measures efficiency using a different approach than 80 PLUS, taking thousands of measurements instead of only 3-4.

    So the 1050 is Cybenetics Platinum, while the 1250 is Cybenetics Gold.

  2. Hi, confused on the review. In the first page it alludes to the 1250W version and also says it’s Platinum efficiency but specs and picture shows Gold.

    If its 1050W, ATX 3.0 and Platinum, it would be the perfect one for me so unsure on the details provided. Thanks.

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