PC Power & Cooling Silencer MK III 750 W Review

Name: PC Power & Cooling Silencer MK III 750 W
Brand: PC Power & Cooling

crmaris

on Jan 28th, 2013,

in Power Supplies.

Manufacturer: PC Power & Cooling

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the MK3S750 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 PC Power & Cooling MK3S750
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	12.7 mV	8.3 mV	8.5 mV	3.9 mV	Pass
40% Load	18.6 mV	8.2 mV	9.3 mV	4.5 mV	Pass
50% Load	21.1 mV	9.2 mV	10.7 mV	5.2 mV	Pass
60% Load	24.0 mV	9.4 mV	12.3 mV	6.2 mV	Pass
80% Load	30.1 mV	10.5 mV	14.7 mV	7.1 mV	Pass
100% Load	35.9 mV	10.6 mV	18.2 mV	9.8 mV	Pass
110% Load	40.1 mV	10.9 mV	18.8 mV	10.0 mV	Pass
Crossload 1	16.3 mV	11.1 mV	12.9 mV	4.1 mV	Pass
Crossload 2	34.6 mV	11.0 mV	14.6 mV	6.1 mV	Pass

Ripple suppression is very good and is especially great on the minor rails! Super Flower did an excellent job with this platform, and the PSU managed to deliver ultra-clean outputs despite the tough conditions we conducted all of our tests in.

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 0.01 V) as standard.