Fractal Design NEWTON R3 1000 W Review

Name: Fractal Design NEWTON R3 1000 W
Brand: Fractal Design

crmaris

on Feb 15th, 2013,

in Power Supplies.

Manufacturer: Fractal Design

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the Newton R3 1000W 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 1000W
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	16.3 mV	20.5 mV	25.2 mV	12.5 mV	Pass
40% Load	21.7 mV	25.9 mV	28.3 mV	14.1 mV	Pass
50% Load	25.2 mV	29.1 mV	31.1 mV	16.7 mV	Pass
60% Load	28.6 mV	34.1 mV	32.0 mV	18.4 mV	Pass
80% Load	35.8 mV	39.0 mV	37.7 mV	20.0 mV	Pass
100% Load	50.8 mV	46.6 mV	44.3 mV	23.5 mV	Pass
110% Load	57.1 mV	51.1 mV	44.8 mV	24.4 mV	Fail
Crossload 1	18.3 mV	33.5 mV	40.9 mV	12.2 mV	Pass
Crossload 2	47.4 mV	36.7 mV	33.9 mV	21.4 mV	Pass

Ripple suppression at +12V is fairly good, although not amongst the best we have ever measured. The minor rails (5V and 3.3V) are rippletastic, which is a shame since they spoil the overall good impression the unit made a little bit. 5V, as you can see, failed to keep ripple below 50 mV with 110% load, but we forced the unit to operate outside of its normal region during this test; we can't blame it for failing. We can blame it for its ripple above 30-35 mV on the minor rails during full-load testing, since the unit belongs to the high-end category wherein the competition provides excellent ripple suppression on all rails.

Ripple at Full Load

In the following oscilloscope screenshots, you can see the AC ripple and noise that the main rails registered (+12V, 5V, 3.3V, and 5VSB). 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 to 0.01 V) as standard.