Xigmatek Centauro 1000 W Review

Name: Xigmatek Centauro 1000 W
Brand: Xigmatek

crmaris

on Jun 13th, 2012,

in Power Supplies.

Manufacturer: Xigmatek

Performance Rating & Performance per Dollar »

Ripple Measurements

In the following table you will find the ripple levels that we measured on the main rails of XTK-CB-1000M. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Xigmatek XTK-CB-1000M
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	16.3 mV	16.1 mV	18.1 mV	10.2 mV	Pass
40% Load	18.3 mV	10.9 mV	14.2 mV	15.5 mV	Pass
50% Load	21.0 mV	11.6 mV	14.3 mV	16.2 mV	Pass
60% Load	25.6 mV	13.3 mV	14.4 mV	17.6 mV	Pass
80% Load	33.2 mV	14.1 mV	15.1 mV	18.7 mV	Pass
100% Load	41.9 mV	14.6 mV	15.7 mV	19.9 mV	Pass
Crossload 1	20.6 mV	23.6 mV	22.4 mV	9.9 mV	Pass
Crossload 2	39.7 mV	13.7 mV	15.6 mV	14.6 mV	Pass

Ripple suppression is very good, taking also into account the not so modern platform that this unit uses. At worst case +12V is around one third of the limit and the minor rails at full load test stay well below 20mV. However during the CL1 test we noticed some weird waveforms on the scope and more specific the waveforms' height was constantly changing by a noticeable percentage (+12V, 5V and 3.3V rails); nevertheless at all three rails ripple remained well below the respective limits.

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 0.01V) as standard.