Thermaltake Toughpower DPS 750W Review




/ 10 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.

Thermaltake_Toughpower_DPS_750W_voltagereg

For a digital unit the voltage regulation is as expected: excellent. All rails with exception to the minus 12 volt rail managed less than 1.5% average deviance from perfect values. The stability of the 12 volt rails was exceptional and the 3.3 volt rail also surprised me as the voltage didn’t budge at all.

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

Thermaltake_Toughpower_DPS_750W_efficiency

Efficiency was closer to 80 Plus Platinum than 80 Plus Gold which is always good to see.

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).

Thermaltake_Toughpower_DPS_750W_PFC

PFC was okay but I’ve seen better for units of this price point.

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