Fractal Design NEWTON R3 800 W Review

Name: Fractal Design NEWTON R3 800 W
Brand: Fractal Design

crmaris

on Nov 17th, 2013,

in Power Supplies.

Manufacturer: Fractal Design

Performance Rating, Performance per Dollar & Noise Rating »

Ripple Measurements

You will see the ripple levels we measured on the main rails of the R3 800 W 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 Fractal Design Newton R3 800W
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	13.5 mV	9.7 mV	11.9 mV	18.7 mV	Pass
40% Load	16.0 mV	11.6 mV	13.9 mV	22.2 mV	Pass
50% Load	22.0 mV	12.8 mV	15.9 mV	24.1 mV	Pass
60% Load	22.7 mV	14.0 mV	17.1 mV	25.3 mV	Pass
80% Load	26.8 mV	17.6 mV	19.5 mV	29.7 mV	Pass
100% Load	40.8 mV	21.4 mV	22.9 mV	33.0 mV	Pass
110% Load	49.5 mV	23.9 mV	23.1 mV	35.4 mV	Pass
Crossload 1	15.7 mV	14.8 mV	16.9 mV	19.4 mV	Pass
Crossload 2	41.7 mV	15.4 mV	18.5 mV	28.3 mV	Pass

Ripple at +12V stayed at very good levels, with almost 41 mV during the full load test. The minor rails of this unit also behaved much better than the ones of the R3 1000 W for which we measured higher overall ripple on the same rails. Overall performance here was very good, which heavily boosts the overall performance score of the R3 800 W, since ripple results play a significant role in our scoring algorithm.

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 oscilloscope 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 standard.