NZXT C1000 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% 6.442A 1.987A 1.969A 0.989A 100 84.598% 0 <6.0 44.38C 0.961
12.169V 5.035V 3.352V 5.056V 118.208 40.15C 115.11V
20% 13.890A 2.981A 2.957A 1.189A 199.949 88.918% 0 <6.0 45.35C 0.977
12.170V 5.033V 3.347V 5.049V 224.873 40.76C 115.08V
30% 21.685A 3.479A 3.455A 1.389A 299.994 91.091% 0 <6.0 46.31C 0.982
12.171V 5.032V 3.343V 5.041V 329.337 41.28C 115.05V
40% 29.505A 3.977A 3.954A 1.59A 399.692 91.356% 0 <6.0 47.12C 0.985
12.150V 5.031V 3.339V 5.033V 437.511 41.54C 115.02V
50% 36.973A 4.973A 4.947A 1.792A 499.443 91.03% 412 <6.0 42.38C 0.988
12.142V 5.028V 3.335V 5.024V 548.659 48.40C 115.01V
60% 44.523A 5.971A 5.943A 1.994A 600.015 90.527% 492 8.1 42.86C 0.99
12.133V 5.026V 3.332V 5.015V 662.799 49.49C 114.99V
70% 52.012A 6.97A 6.941A 2.198A 699.781 89.887% 700 17.4 43.14C 0.992
12.125V 5.023V 3.328V 5.006V 778.517 50.25C 114.97V
80% 59.578A 7.968A 7.94A 2.301A 799.78 89.11% 905 25.9 43.80C 0.993
12.116V 5.021V 3.325V 4.998V 897.527 51.88C 114.94V
90% 67.472A 8.469A 8.428A 2.405A 899.545 88.26% 1104 31.9 44.25C 0.993
12.110V 5.019V 3.322V 4.991V 1019.192 53.31C 114.9V
100% 75.140A 8.97A 8.949A 3.014A 999.528 87.322% 1368 38.9 45.68C 0.993
12.109V 5.017V 3.318V 4.977V 1144.65 55.87C 114.87V
110% 82.735A 9.97A 10.047A 3.019A 1100.136 86.309% 1628 43.0 46.59C 0.994
12.109V 5.015V 3.314V 4.969V 1274.641 57.47C 114.83V
CL1 0.115A 14.364A 14.35A 0A 121.29 81.095% 412 <6.0 40.10C 0.973
12.176V 5.026V 3.324V 5.059V 149.568 52.00C 115.1V
CL2 0.115A 21.874A 0A 0A 111.383 78.9% 411 <6.0 40.92C 0.97
12.180V 5.028V 3.334V 5.065V 141.173 51.42C 115.1V
CL3 0.114A 0A 21.943A 0A 73.984 73.65% 411 <6.0 40.52C 0.957
12.175V 5.038V 3.308V 5.06V 100.455 50.92C 115.11V
CL4 82.573A 0A 0A 0A 999.941 88.224% 1254 36.1 45.32C 0.993
12.109V 5.027V 3.32V 5.02V 1133.418 57.25C 114.86V

Load regulation is tight on all major rails but 3.3V.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 6.7 mV 6.5 mV 4.3 mV 4.9 mV Pass
20% Load 8.2 mV 5.2 mV 4.1 mV 5.3 mV Pass
30% Load 14.1 mV 5.1 mV 5.1 mV 5.2 mV Pass
40% Load 11.7 mV 11.5 mV 15.9 mV 5.6 mV Pass
50% Load 10.4 mV 6.6 mV 5.1 mV 6.7 mV Pass
60% Load 10.6 mV 8.1 mV 5.9 mV 6.1 mV Pass
70% Load 11.2 mV 12.2 mV 8.0 mV 6.1 mV Pass
80% Load 11.7 mV 7.4 mV 10.0 mV 6.7 mV Pass
90% Load 13.0 mV 8.3 mV 9.4 mV 8.4 mV Pass
100% Load 19.1 mV 8.9 mV 10.2 mV 9.2 mV Pass
110% Load 21.5 mV 8.6 mV 10.9 mV 9.6 mV Pass
Crossload 1 9.8 mV 8.7 mV 11.1 mV 7.4 mV Pass
Crossload 2 10.0 mV 7.8 mV 4.1 mV 6.8 mV Pass
Crossload 3 7.3 mV 5.8 mV 11.1 mV 6.9 mV Pass
Crossload 4 19.9 mV 6.8 mV 6.0 mV 8.0 mV Pass

Ripple suppression is good on all rails.

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5 thoughts on “NZXT C1000 ATX v3.1 PSU Review

  1. Very impressive work! Thank you very much! 🙂

    I was wondering if you heard anything about the Straight Power 12 from be quiet? I have barely heard about this unit and I was hesitating between the Straight Power 12, a Corsair RMx/e or a NZXT C Gold for an RTX 4070 ti Super + i5-14600K system (850 – 1000W range).

    Thank you againt!

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