PSUs

DeepCool PN750D ATX v3.1 PSU Review

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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% 5.256A 1.98A 1.966A 0.988A 85.006 87.774% 1082 26.1 40.10C 0.957
12.064V 5.052V 3.357V 5.061V 96.85 44.35C 115.15V
20% 11.535A 2.972A 2.952A 1.19A 169.975 90.592% 1090 26.5 40.59C 0.978
12.056V 5.049V 3.354V 5.044V 187.63 45.11C 115.12V
30% 18.168A 3.467A 3.445A 1.394A 255.01 91.355% 1100 26.7 41.10C 0.981
12.051V 5.05V 3.353V 5.021V 279.144 46.21C 115.1V
40% 24.813A 3.965A 3.942A 1.599A 340.08 91.261% 1098 26.6 41.75C 0.981
12.045V 5.045V 3.349V 5.004V 372.646 47.28C 115.07V
50% 31.113A 4.959A 4.932A 1.806A 425.046 90.859% 1101 26.7 42.27C 0.98
12.038V 5.042V 3.346V 4.984V 467.802 48.33C 115.05V
60% 37.382A 5.953A 5.922A 2.001A 509.493 90.291% 1105 26.7 42.77C 0.981
12.031V 5.041V 3.344V 4.963V 564.278 49.32C 115.02V
70% 43.727A 6.948A 6.914A 2.227A 594.91 89.436% 1522 36.5 43.17C 0.983
12.024V 5.039V 3.342V 4.94V 665.176 50.24C 114.99V
80% 50.081A 7.946A 7.91A 2.336A 679.696 88.63% 1904 42.5 43.63C 0.985
12.017V 5.034V 3.337V 4.924V 766.894 51.70C 114.96V
90% 56.836A 8.446A 8.395A 2.446A 765.146 87.712% 2237 46.0 44.50C 0.986
12.011V 5.032V 3.335V 4.907V 872.345 53.71C 114.93V
100% 63.332A 8.944A 8.911A 3.083A 849.978 86.628% 2239 46.0 45.82C 0.987
12.005V 5.031V 3.333V 4.867V 981.175 55.84C 114.9V
110% 69.707A 9.943A 9.999A 3.093A 934.57 85.522% 2239 46.0 46.79C 0.988
11.997V 5.029V 3.33V 4.85V 1092.785 57.72C 114.88V
CL1 0.116A 13.142A 13.034A 0A 111.299 83.857% 1113 26.7 41.02C 0.974
12.055V 5.037V 3.352V 5.075V 132.728 46.45C 115.14V
CL2 0.116A 19.877A 0.001A 0.001A 101.4 82.114% 1114 26.7 40.45C 0.974
12.060V 5.031V 3.365V 5.086V 123.487 47.46C 115.14V
CL3 0.116A 0A 19.693A 0A 67.396 76.587% 1095 26.6 40.01C 0.958
12.057V 5.066V 3.351V 5.083V 88.019 49.11C 115.15V
CL4 70.735A 0.001A 0A 0A 849.683 87.617% 2243 46.1 45.12C 0.988
12.013V 5.054V 3.344V 4.998V 969.78 56.09C 114.91V

Load regulation is tight overall. Only the 5VSB rail has high voltage drops, but as long as its voltage is above the lowest allowable limit (4.75V), it doesn’t matter so much.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 24.3 mV 10.7 mV 9.8 mV 10.2 mV Pass
20% Load 24.3 mV 11.9 mV 11.4 mV 10.9 mV Pass
30% Load 25.9 mV 13.0 mV 14.6 mV 13.0 mV Pass
40% Load 24.8 mV 13.8 mV 13.8 mV 15.1 mV Pass
50% Load 25.6 mV 16.0 mV 14.5 mV 18.4 mV Pass
60% Load 26.6 mV 17.2 mV 13.8 mV 20.0 mV Pass
70% Load 29.9 mV 24.7 mV 15.0 mV 23.7 mV Pass
80% Load 33.0 mV 27.3 mV 20.8 mV 25.5 mV Pass
90% Load 34.6 mV 29.9 mV 26.2 mV 22.3 mV Pass
100% Load 48.2 mV 26.6 mV 30.5 mV 24.6 mV Pass
110% Load 52.1 mV 34.9 mV 32.9 mV 29.9 mV Pass
Crossload 1 50.9 mV 26.4 mV 21.4 mV 12.6 mV Pass
Crossload 2 35.1 mV 29.4 mV 16.7 mV 14.7 mV Pass
Crossload 3 33.3 mV 18.2 mV 25.0 mV 8.2 mV Pass
Crossload 4 40.1 mV 21.0 mV 25.1 mV 14.2 mV Pass

Ripple suppression is not competitive, especially at 12V and 3.3V.

Pages:
  1. Prologue & Technical specifications
  2. Box & Bundle, Product Photos & Cables
  3. Part Analysis
  4. Load Regulation & Ripple Suppression
  5. Transient Response
  6. Hold-Up time, Inrush Current & PSU Timings
  1. Efficiency, Power Factor, 5VSB & Vampire Power
  2. Protection Features
  3. Noise Output
  4. Overall Performance
  5. Epilogue
Pages: 1 2 3 4 5 6 7 8 9 10 11
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5 thoughts on “DeepCool PN750D ATX v3.1 PSU Review”

  2. Probably just a typographical error. I suggest you correct the amperage on the 12 volt rail from 6,205 amps to 62.5 amps.

    I agree with your review. The psu may be budget oriented but it does need a few improvements.

    Reply

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