Cooler Master Silent Pro Hybrid 1050 W Review

Name: Cooler Master Silent Pro Hybrid 1050 W
Brand: Cooler Master

crmaris

on Dec 16th, 2011,

in Power Supplies.

Manufacturer: Cooler Master

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 SPH-1050. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Coolermaster SPH-1050
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	13.9 mV	6.7 mV	6.1 mV	6.0 mV	Pass
40% Load	21.6 mV	9.0 mV	7.0 mV	7.4 mV	Pass
50% Load	25.0 mV	10.2 mV	7.2 mV	8.0 mV	Pass
60% Load	26.3 mV	11.3 mV	8.5 mV	9.0 mV	Pass
80% Load	34.9 mV	14.3 mV	9.8 mV	9.2 mV	Pass
100% Load	40.1 mV	17.0 mV	11.6 mV	10.0 mV	Pass
Crossload 1	17.3 mV	10.7 mV	9.7 mV	6.6 mV	Pass
Crossload 2	36.9 mV	13.7 mV	9.6 mV	8.4 mV	Pass

Ripple suppression is fairly good. At +12V, 40mV ripple surely is not the lowest we have ever seen but still represents the one third of the limit so undoubtedly good performance, especially if we take into account the high ambient inside the hot box and the 1050W of load. On the minor rails ripple is very low with 3.3V having the cleanest output.

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.