Corsair RMi Series 650 W Review

Name: Corsair RMi Series 650 W
Brand: Corsair

crmaris

on May 4th, 2016,

in Power Supplies.

Manufacturer: Corsair

EMC Pre-Compliance Testing »

Ripple Measurements

You will see the ripple levels we measured on the rails of the RM650i 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 - Corsair RM650i
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	4.5 mV	5.2 mV	5.3 mV	4.4 mV	Pass
20% Load	5.6 mV	5.6 mV	5.7 mV	4.8 mV	Pass
30% Load	6.8 mV	9.1 mV	7.0 mV	8.0 mV	Pass
40% Load	7.1 mV	10.4 mV	8.6 mV	10.3 mV	Pass
50% Load	7.5 mV	6.3 mV	8.3 mV	6.4 mV	Pass
60% Load	7.9 mV	6.4 mV	7.6 mV	6.9 mV	Pass
70% Load	8.0 mV	6.7 mV	7.4 mV	7.4 mV	Pass
80% Load	8.9 mV	7.0 mV	8.7 mV	7.7 mV	Pass
90% Load	10.0 mV	7.2 mV	8.4 mV	8.2 mV	Pass
100% Load	12.3 mV	8.9 mV	10.4 mV	9.5 mV	Pass
110% Load	14.4 mV	9.0 mV	11.0 mV	10.4 mV	Pass
Crossload 1	6.8 mV	7.5 mV	8.4 mV	6.6 mV	Pass
Crossload 2	12.0 mV	8.4 mV	9.9 mV	8.1 mV	Pass

Ripple suppression is jaw dropping! This unit is easily capable of competing with Super Flower's high-end implementations. We simply couldn't ask for better results here.

Ripple at Full Load

You can see the AC ripple and noise the main rails registered (+12V, 5V, 3.3V, and 5VSB) in the following oscilloscope screenshots. 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 0.01 V) as the standard for all measurements.