EVGA Bronze 500 W Review

Name: EVGA Bronze 500 W
Brand: EVGA

crmaris

on Aug 22nd, 2013,

in Power Supplies.

Manufacturer: EVGA

Performance Rating, Performance per Dollar & Noise Rating »

Ripple Measurements

You will see the ripple levels we measured on the main rails of the 500B 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 EVGA 500B
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	24.0 mV	11.2 mV	11.2 mV	9.8 mV	Pass
40% Load	34.6 mV	11.4 mV	13.3 mV	11.2 mV	Pass
50% Load	39.4 mV	15.6 mV	12.4 mV	13.6 mV	Pass
60% Load	46.3 mV	17.8 mV	12.9 mV	16.9 mV	Pass
80% Load	60.1 mV	20.1 mV	14.7 mV	18.4 mV	Pass
100% Load	72.8 mV	22.3 mV	15.5 mV	24.5 mV	Pass
110% Load	80.9 mV	23.1 mV	16.4 mV	26.2 mV	Pass
Crossload 1	30.4 mV	58.7 mV	18.7 mV	9.6 mV	Fail
Crossload 2	72.4 mV	18.9 mV	12.8 mV	21.6 mV	Pass

We would like to see ripple lower than 50 mV on the +12V rail. The minor rails performed well, especially for a unit of this category, but the 5V rail failed to keep its ripple within ATX specifications during the CL1 test (or our Haswell compatibility test).

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. For all measurements, we set 0.01 V/Div (each vertical division/box equals 0.01 V) as standard.