XFX XTR Series 650 W Review

Name: XFX XTR Series 650 W
Brand: XFX

crmaris

on Jun 10th, 2014,

in Power Supplies.

Manufacturer: XFX

Performance Rating, Performance per Dollar, Noise & Efficiency Rating »

Ripple Measurements

You will see the ripple levels we measured on the XTR-650's rails 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 - XFX XTR-650
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	7.3 mV	6.5 mV	11.3 mV	4.6 mV	Pass
20% Load	9.9 mV	6.7 mV	12.2 mV	5.5 mV	Pass
30% Load	12.9 mV	7.0 mV	13.2 mV	6.9 mV	Pass
40% Load	16.6 mV	7.5 mV	13.7 mV	8.8 mV	Pass
50% Load	20.5 mV	7.6 mV	16.3 mV	8.9 mV	Pass
60% Load	23.9 mV	8.5 mV	16.8 mV	9.3 mV	Pass
70% Load	26.6 mV	12.0 mV	17.6 mV	10.8 mV	Pass
80% Load	29.9 mV	29.7 mV	23.4 mV	12.1 mV	Pass
90% Load	34.5 mV	31.3 mV	26.6 mV	12.5 mV	Pass
100% Load	42.2 mV	34.2 mV	28.3 mV	14.5 mV	Pass
110% Load	46.8 mV	35.6 mV	30.2 mV	15.6 mV	Pass
Crossload 1	10.2 mV	7.2 mV	11.4 mV	9.3 mV	Pass
Crossload 2	38.9 mV	23.0 mV	22.5 mV	14.0 mV	Pass

Ripple suppression was good enough throughout; however, we would like to see even better results since this PSU is by Seasonic, and Seasonic has a strong tradition in the area of ripple suppression. Considering the tough conditions in which we conducted our tests, the +12V rail performed quite well, but ripple on the 5V rail should ideally be lower than 30 mV.

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. We set 0.01 V/Div (each vertical division/box equals 0.01 V) as the standard for all measurements.