be quiet! Power Zone 2 1000W 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% 6.372A 1.96A 1.977A 0.994A 99.987 88.726% 0 <6.0 48.30°C 0.97
12.303V 5.101V 3.338V 5.031V 112.691 40.04°C 114.87V
20% 13.748A 2.944A 2.971A 1.196A 199.938 91.527% 0 <6.0 49.64°C 0.976
12.295V 5.095V 3.333V 5.019V 218.448 40.54°C 114.84V
30% 21.483A 3.439A 3.471A 1.398A 299.991 92.338% 0 <6.0 51.90°C 0.982
12.286V 5.089V 3.328V 5.006V 324.884 41.05°C 114.81V
40% 29.187A 3.934A 3.973A 1.602A 399.545 92.316% 0 <6.0 53.14°C 0.987
12.277V 5.084V 3.323V 4.994V 432.803 41.51°C 114.79V
50% 36.573A 4.923A 4.975A 1.807A 499.245 91.835% 0 <6.0 56.35°C 0.991
12.269V 5.078V 3.317V 4.982V 543.634 42.01°C 114.74V
60% 44.052A 5.914A 5.981A 2A 599.725 91.234% 776 18 42.90°C 0.993
12.258V 5.073V 3.311V 4.97V 657.348 43.15°C 114.71V
70% 51.482A 6.908A 6.99A 2.219A 699.52 90.741% 951 23.7 41.05°C 0.994
12.245V 5.067V 3.305V 4.957V 770.897 43.48°C 114.67V
80% 58.985A 7.901A 8.003A 2.325A 799.532 90.168% 1154 29.7 43.74°C 0.994
12.234V 5.062V 3.299V 4.946V 886.717 43.94°C 114.63V
90% 66.824A 8.407A 8.505A 2.431A 899.323 89.575% 1368 34.5 44.23°C 0.995
12.224V 5.054V 3.292V 4.936V 1003.987 44.54°C 114.59V
100% 74.479A 8.912A 9.037A 3.054A 999.327 88.87% 1553 38.2 44.83°C 0.995
12.213V 5.048V 3.287V 4.912V 1124.495 45.11°C 114.55V
110% 82.077A 9.915A 10.153A 3.059A 1099.964 88.027% 1731 40.6 46.34°C 0.996
12.203V 5.042V 3.28V 4.903V 1249.579 46.51°C 114.5V
CL1 0.114A 14.242A 14.439A 0A 121.296 84.267% 0 <6.0 47.61°C 0.974
12.299V 5.069V 3.304V 5.045V 143.944 40.11°C 114.86V
CL2 0.113A 19.717A 0A 0A 101.352 82.803% 0 <6.0 49.67°C 0.972
12.308V 5.07V 3.318V 5.052V 122.401 41.50°C 114.87V
CL3 0.112A 0A 19.972A 0A 67.399 77.009% 0 <6.0 49.18°C 0.961
12.309V 5.074V 3.305V 5.052V 87.521 40.92°C 114.89V
CL4 81.788A 0A 0A 0A 999.924 89.383% 1580 38.5 45.67°C 0.995
12.225V 5.066V 3.303V 4.999V 1118.697 46.07°C 114.56V

Load regulation is tight enough at 12V, but this is not true for the rest of the rails.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 19.0 mV 15.4 mV 14.5 mV 15.9 mV Pass
20% Load 23.7 mV 15.6 mV 15.0 mV 16.5 mV Pass
30% Load 26.3 mV 17.5 mV 16.5 mV 16.5 mV Pass
40% Load 29.3 mV 15.8 mV 14.5 mV 15.2 mV Pass
50% Load 30.4 mV 15.3 mV 15.2 mV 15.1 mV Pass
60% Load 31.4 mV 15.8 mV 16.0 mV 15.5 mV Pass
70% Load 30.8 mV 15.7 mV 15.4 mV 16.5 mV Pass
80% Load 32.5 mV 16.2 mV 16.7 mV 16.1 mV Pass
90% Load 33.7 mV 16.4 mV 19.5 mV 17.1 mV Pass
100% Load 52.8 mV 16.5 mV 18.4 mV 18.7 mV Pass
110% Load 54.7 mV 17.5 mV 19.0 mV 20.6 mV Pass
Crossload 1 33.3 mV 17.5 mV 20.6 mV 16.3 mV Pass
Crossload 2 20.4 mV 18.0 mV 17.3 mV 15.3 mV Pass
Crossload 3 20.3 mV 16.1 mV 20.1 mV 17.1 mV Pass
Crossload 4 51.1 mV 16.6 mV 16.8 mV 17.0 mV Pass

Ripple suppression goes south at 100% load on the 12V rail, a sign that the platform is stressed at this load level. Check the significant difference in ripple between 90% and 100% load.

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