In Win GreenMe 750 W Review

Name: In Win GreenMe 750 W
Brand: InWin

crmaris

on Aug 12th, 2013,

in Power Supplies.

Manufacturer: InWin

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels we measured on the main rails of the GreenMe 750 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 In Win GreenMe-750
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	15.3 mV	30.9 mV	23.6 mV	10.3 mV	Pass
40% Load	19.9 mV	33.8 mV	25.7 mV	16.0 mV	Pass
50% Load	21.9 mV	34.6 mV	29.1 mV	14.7 mV	Pass
60% Load	24.8 mV	36.3 mV	28.7 mV	16.1 mV	Pass
80% Load	39.6 mV	36.4 mV	27.3 mV	16.3 mV	Pass
100% Load	52.3 mV	38.9 mV	24.5 mV	17.1 mV	Pass
110% Load	57.9 mV	39.7 mV	26.3 mV	18.3 mV	Pass
Crossload 1	14.2 mV	30.1 mV	19.7 mV	11.3 mV	Pass
Crossload 2	47.7 mV	33.3 mV	23.1 mV	13.1 mV	Pass

Ripple suppression at +12V is decent for a mainstream unit, but we are sensitive to this matter and want to see ripple below 40 mV irregardless of the PSU's cost/category. The 5V rail's ripple was on the high side, but all other rails performed rather well here.

Ripple at Full Load

In the following oscilloscope screenshots shows the AC ripple and noise 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.