Kingwin Absolute Platinum 550 W Review

Name: Kingwin Absolute Platinum 550 W
Brand: Kingwin

crmaris

on Mar 27th, 2012,

in Power Supplies.

Manufacturer: Kingwin

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 AP-550. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Kingwin AP-550
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	12.5 mV	6.8 mV	7.7 mV	3.4 mV	Pass
40% Load	15.5 mV	8.1 mV	9.9 mV	4.4 mV	Pass
50% Load	18.0 mV	8.8 mV	11.8 mV	5.0 mV	Pass
60% Load	20.1 mV	9.9 mV	13.3 mV	5.5 mV	Pass
80% Load	26.7 mV	12.6 mV	16.8 mV	6.8 mV	Pass
100% Load	35.9 mV	15.0 mV	19.6 mV	7.6 mV	Pass
Crossload 1	21.2 mV	12.8 mV	17.8 mV	6.8 mV	Pass
Crossload 2	29.5 mV	11.1 mV	12.9 mV	5.8 mV	Pass

Ripple suppression is very good on all rails, showing that the ultra high efficiency didn't affect this area. Apparently Super Flower knows how to effectively filter ripple from DC outputs, besides achieving ultra high efficiency levels. Clever circuit design plays a great role in removing ripple and just dropping in a few Japan made caps doesn't make ripple vanish automatically.

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.