Amacrox Free Earth 88PLUS AX600-88FE 600W Review

Name: Amacrox Free Earth 88PLUS AX600-88FE 600W
Brand: Amacrox

crmaris

on Mar 20th, 2011,

in Power Supplies.

Manufacturer: Amacrox

Value & Conclusion »

Ripple Measurements

Below you will find the ripple levels that we measured on the main rails of AX600-88FE. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V & 3.3V).

Ripple Measurements
Test	12 V	5 V	3.3 V	Pass/Fail
20% Load	30.6 mV	23.6 mV	23.2 mV	Pass
40% Load	39.6 mV	26.0 mV	27.4 mV	Pass
50% Load	36.8 mV	23.2 mV	26.0 mV	Pass
60% Load	40.4 mV	21.8 mV	27.2 mV	Pass
80% Load	48.4 mV	27.2 mV	32.8 mV	Pass
100% Load	53.6 mV	22.8 mV	31.2 mV	Pass
Crossload 1	26.8 mV	24.2 mV	31.4 mV	Pass
Crossload 2	61.2 mV	28.4 mV	34.6 mV	Pass

Ripple-noise suppression is good but not among the best we have seen (the latter mainly goes for the minor 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). The bigger the fluctuations on the oscilloscope's screen the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals to 0.01V) as standard but sometimes we are forced to use 0.02 V/Div, meaning that the fluctuations will look smaller but actually this wont be the case.

Ripple at Crossload 2

For the first screenshot we used 0.02 V/Div, so actually the registered ripple is much bigger than it seems (compared to the other screenshots where 0.01 V/Div was used). As above the order of images is +12V, 5V and 3.3V.