Deepcool DQ750 Quanta Semi-Modular Power Supply Review

by - 6 years ago

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Efficiency, PFC and Voltage Regulation


Voltage Regulation

To test voltage regulation we load the power supply to five different load scenarios that give an equal spread of load across every single rail. So that means 20% on all rails, 40% on all rails and so on. We then calculate the average deviance of each rail from its expected voltage.

deepcool_dq750_vreg

Voltage regulation is strong on all major rails, within 1.25% which is a great result. Only the obsolete minus 12 volt rail suffered from poor performance, but this is easily overlooked.

Power Efficiency

Power efficiency is measured by calculating actual supplied wattage divided by the wattage drawn at the wall/plug, multiplied by 100 to give a percentage. We then compare that to the particular 80 Plus certification the company claims to see if it meets that. You can see the 80 Plus certifications below, we always test 230v power supplies.

80_plus_specs

deepcool_dq750_efficiency

80 Plus Gold is claimed and 80 Plus Gold is delivered almost to the exact specification required.

Power Factor Correction

Power Factor Correction is the ratio of the real power flowing to the load, to the apparent power in the circuit. The aim of PFC is to make the load circuitry that is power factor corrected appear purely resistive (apparent power equal to real power). In this case, the voltage and current are in phase and the reactive power consumption is zero. The closer the number to one the better as this allows the most efficient delivery of electrical power (Source – Wikipedia).

deepcool_dq750_PFC

PFC starts off quite low and does recover from 60% but we’ve certainly seen much better in the past: the performance is fairly average.

Article Index

  1. Introduction and Packaging
  2. A Closer Look - Exterior
  3. A Closer Look - Interior
  4. Test Procedure
  5. Efficiency, PFC and Voltage Regulation
  6. Ripple Testing
  7. OPP and Max Wattage
  8. Fan Speed
  9. Final Thoughts
  10. View All

Author Bio

Add a Comment

1 Comment on Deepcool DQ750 Quanta Semi-Modular Power Supply Review

  • Avatar Rio Amaterasu says:

    i
    want an honest review on this one.. no BS no marketing all real.. coz
    i’m planning on buying one of these but since other rated this as
    “china made” i’m kinda having doubts.. Please reply anyone? eTeknix.com

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