Thermaltake Toughpower DPS 850 W Review

Name: Thermaltake Toughpower DPS 850 W
Brand: Thermaltake

crmaris

on Nov 10th, 2013,

in Power Supplies.

Manufacturer: Thermaltake

Performance Rating, Performance per Dollar & Noise Rating »

Ripple Measurements

You will see the ripple levels we measured on the main rails of the DPS-850 in the following table. The limits are, according to the ATX specification, 120 mV (+12V) and 50 mV (5V, 3.3V, and 5VSB).

Ripple Measurements Thermaltake DPS-850
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	27.4 mV	6.8 mV	8.9 mV	5.0 mV	Pass
40% Load	10.5 mV	9.8 mV	9.7 mV	6.5 mV	Pass
50% Load	11.0 mV	11.1 mV	11.1 mV	7.6 mV	Pass
60% Load	11.0 mV	15.7 mV	13.6 mV	8.7 mV	Pass
80% Load	12.9 mV	15.4 mV	14.5 mV	12.2 mV	Pass
100% Load	14.9 mV	17.4 mV	15.8 mV	14.0 mV	Pass
110% Load	15.9 mV	19.0 mV	17.4 mV	15.4 mV	Pass
Crossload 1	24.9 mV	14.1 mV	11.3 mV	34.9 mV	Pass
Crossload 2	14.5 mV	15.8 mV	13.3 mV	11.8 mV	Pass

Ripple suppression was superb. The DPS-850 is among the best performers we have ever come across in this section. Digital control not only offers ultra steady rails, but also extra-clear ones. This is obviously the route to follow for all major PSU manufacturers, since analog circuits are already at their pinnacle in performance; that is, in some contemporary high-end PSU designs. And besides, analog designs appear to have nothing but a lower price tag on offer.

Ripple at Full Load

You can see the AC ripple and noise the main rails registered (+12V, 5V, 3.3V, and 5VSB) in the following screenshots. The bigger the fluctuations on the oscilloscope's screen, the bigger the ripple/noise. For all measurements, we set 0.01 V/Div (each vertical division/box equals 0.01 V) as the standard.