PC Power & Cooling Silencer MK III 600 W Review

Name: PC Power & Cooling Silencer MK III 600 W
Brand: PC Power & Cooling

crmaris

on Nov 21st, 2011,

in Power Supplies.

Manufacturer: PC Power & Cooling

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 MK3S600. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements PC Power & Cooling MK3S600
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	5.0 mV	7.1 mV	7.4 mV	10.8 mV	Pass
40% Load	5.6 mV	7.6 mV	8.1 mV	10.9 mV	Pass
50% Load	8.4 mV	9.1 mV	10.3 mV	12.5 mV	Pass
60% Load	10.7 mV	13.4 mV	15.3 mV	14.0 mV	Pass
80% Load	10.8 mV	13.6 mV	20.1 mV	18.7 mV	Pass
100% Load	14.1 mV	14.6 mV	22.7 mV	19.6 mV	Pass
Crossload 1	10.1 mV	24.5 mV	8.7 mV	7.0 mV	Pass
Crossload 2	13.8 mV	13.1 mV	22.5 mV	17.1 mV	Pass

Ripple at +12V is dead low in all cases. Only 14.1 mV of ripple at worst case in the most significant rail is definitely something to write home about. The minor rails registered a little higher ripple but still well below half of the limit (50 mV) even at worst case scenario. To speak frankly we didn't expect to see something different in ripple measurements from a Seasonic product since this company has mastered ripple suppression for ages now.

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.