Corsair Professional Series HX1050 Review

Name: Corsair Professional Series HX1050
Brand: Corsair

crmaris

on Jun 24th, 2011,

in Power Supplies.

Manufacturer: Corsair

Value & Conclusion »

Ripple Measurements

In the following table you will find the ripple levels that we measured on the main rails of HX1050. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V & 3.3V).

Ripple Measurements
Test	12 V	5 V	3.3 V	Pass/Fail
20% Load	7.4 mV	7.6 mV	6.8 mV	Pass
40% Load	11.2 mV	9.2 mV	8.2 mV	Pass
50% Load	13.6 mV	9.6 mV	8.8 mV	Pass
60% Load	16.4 mV	10.8 mV	9.4 mV	Pass
80% Load	23.2 mV	12.8 mV	11.6 mV	Pass
100% Load	32.4 mV	14.8 mV	14.2 mV	Pass
Crossload 1	9.6 mV	8.8 mV	7.8 mV	Pass
Crossload 2	31.2 mV	15.8 mV	12.8 mV	Pass

Overall ripple/noise suppression on all rails is superb! Even at 100% load, ripple at +12V is almost a quarter of the limit and on the minor rails it is less than one third of the respective limit. It is clear that Corsair/CWT found the secret formula that eliminates ripple, even at above 1000W loads.

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). 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 to 0.01V) as standard but sometimes we are forced to use 0.02 V/Div, meaning that the fluctuations will look smaller but actually this wont be the case. For the first screenshot we used 0.02 V/Div, so actually the registered ripple is much bigger than it seems (compared to the other screenshots where 0.01 V/Div was used).