Micronics Wizmax G 1000W ATX v3.1 PSU Review

Load Regulation

It measures the stability of the output voltage when the load connected to the power supply varies.

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 6.466A 1.996A 1.997A 0.98A 100.014 84.586% 0 <6.0 49.59°C 0.984
12.126V 5.011V 3.304V 5.106V 118.24 40.24°C 114.92V
20% 13.953A 2.995A 2.996A 1.179A 199.971 88.92% 0 <6.0 50.71°C 0.989
12.116V 5.01V 3.304V 5.091V 224.887 40.71°C 114.9V
30% 21.811A 3.496A 3.496A 1.379A 300.061 90.449% 0 <6.0 51.51°C 0.988
12.104V 5.008V 3.305V 5.077V 331.745 41.19°C 114.82V
40% 29.652A 3.996A 3.997A 1.581A 399.91 90.927% 0 <6.0 50.38°C 0.991
12.096V 5.007V 3.303V 5.063V 439.814 41.75°C 114.79V
50% 37.164A 4.998A 4.998A 1.784A 499.651 90.679% 819 23.2 42.07°C 0.994
12.085V 5.004V 3.302V 5.047V 551.011 47.12°C 114.77V
60% 44.754A 6A 5.998A 1.988A 600.206 90.346% 844 24.2 42.87°C 0.995
12.075V 5.002V 3.302V 5.032V 664.346 48.23°C 114.74V
70% 52.286A 7.002A 6.998A 2.194A 699.947 89.87% 977 28.6 43.27°C 0.996
12.065V 5.001V 3.302V 5.016V 778.844 48.52°C 114.71V
80% 59.901A 8.003A 7.996A 2.3A 800.037 89.158% 1150 33.1 43.96°C 0.997
12.055V 4.999V 3.302V 5.002V 897.28 51.22°C 114.69V
90% 67.870A 8.506A 8.481A 2.406A 899.88 88.378% 1260 35.8 44.5°C 0.998
12.044V 4.998V 3.302V 4.989V 1018.215 51.09°C 114.66V
100% 75.639A 9.008A 8.997A 3.023A 999.82 87.77% 1294 36.5 45.65°C 0.998
12.033V 4.997V 3.301V 4.963V 1139.143 52.65°C 114.62V
110% 83.356A 10.011A 10.086A 3.03A 1100.449 86.842% 1393 38.4 46.8°C 0.998
12.022V 4.995V 3.302V 4.952V 1267.198 54.79°C 114.59V
CL1 0.117A 15.651A 15.523A 0A 131.329 80.151% 0 <6.0 51.92°C 0.992
12.123V 5.004V 3.324V 5.118V 163.851 41.83°C 114.85V
CL2 0.116A 24.99A 0A 0A 126.412 77.87% 0 <6.0 51.17°C 0.99
12.118V 5.002V 3.305V 5.124V 162.34 41.8°C 114.85V
CL3 0.115A 0A 24.744A 0A 83.9 72.751% 0 <6.0 46.63°C 0.985
12.129V 5.016V 3.334V 5.122V 115.326 40.66°C 114.89V
CL4 83.125A 0A 0A 0A 1000.152 88.479% 1241 35.2 45.42°C 0.998
12.032V 5.008V 3.291V 5.061V 1130.392 53.3°C 114.68V

Load regulation is within 1% on all main rails.

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.224A 0.499A 0.499A 0.195A 20.003 63.774% 0 <6.0 45.18°C 0.889
12.136V 5.012V 3.304V 5.134V 31.366 36.63°C 114.95V
40W 2.696A 0.698A 0.699A 0.292A 40.001 75.297% 0 <6.0 46.12°C 0.949
12.127V 5.012V 3.304V 5.13V 53.124 37.71°C 114.94V
60W 4.166A 0.898A 0.899A 0.39A 60 80.62% 0 <6.0 46.74°C 0.971
12.126V 5.012V 3.304V 5.125V 74.424 38.7°C 114.93V
80W 5.635A 1.098A 1.099A 0.488A 79.962 82.914% 0 <6.0 48.47°C 0.975
12.125V 5.013V 3.304V 5.121V 96.443 39.43°C 114.92V

A glance at the light loads table is always useful, as the PSU will typically operate at light loads.

Ripple Suppression

Ripple in power supplies refers to the small, unwanted AC voltage fluctuations superimposed on the DC output. It occurs due to imperfect filtering of the AC-to-DC conversion process. Lower ripple is highly preferable because it ensures a cleaner, more stable DC output, thereby reducing noise and potential interference in sensitive electronics, which improves performance and extends the lifespan of components. High ripple can cause instability, overheating, or damage to connected devices.

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 14.2 mV 7.4 mV 5.5 mV 7.0 mV Pass
20% Load 13.0 mV 6.6 mV 4.6 mV 7.8 mV Pass
30% Load 13.9 mV 6.8 mV 4.9 mV 8.3 mV Pass
40% Load 13.0 mV 7.4 mV 5.0 mV 9.4 mV Pass
50% Load 14.5 mV 7.7 mV 5.2 mV 8.8 mV Pass
60% Load 15.3 mV 8.1 mV 5.2 mV 8.8 mV Pass
70% Load 18.9 mV 9.3 mV 5.2 mV 11.0 mV Pass
80% Load 19.5 mV 9.1 mV 7.2 mV 9.8 mV Pass
90% Load 21.4 mV 10.6 mV 8.5 mV 11.2 mV Pass
100% Load 25.4 mV 10.5 mV 8.8 mV 14.4 mV Pass
110% Load 26.9 mV 10.3 mV 9.5 mV 13.7 mV Pass
Crossload 1 17.8 mV 7.9 mV 9.2 mV 7.1 mV Pass
Crossload 2 11.5 mV 8.0 mV 4.7 mV 6.3 mV Pass
Crossload 3 70.7 mV 10.9 mV 11.8 mV 6.6 mV Pass
Crossload 4 24.9 mV 9.9 mV 6.2 mV 9.1 mV Pass

Ripple suppression is good overall.

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