Enermax Platimax 1500 W Review

Name: Enermax Platimax 1500 W
Brand: Enermax

crmaris

on Jan 9th, 2012,

in Power Supplies.

Manufacturer: Enermax

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 EPM1500EGT. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Enermax EPM1500EGT
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	15.3 mV	18.4 mV	13.6 mV	12.4 mV	Pass
40% Load	19.7 mV	23.4 mV	15.8 mV	17.0 mV	Pass
50% Load	23.5 mV	26.3 mV	18.0 mV	20.2 mV	Pass
60% Load	24.5 mV	28.4 mV	18.4 mV	20.3 mV	Pass
80% Load	26.6 mV	33.5 mV	23.0 mV	26.6 mV	Pass
100% Load	29.7 mV	36.4 mV	24.8 mV	31.3 mV	Pass
Crossload 1	35.9 mV	47.6 mV	23.9 mV	13.0 mV	Pass
Crossload 2	17.0 mV	22.8 mV	18.6 mV	26.3 mV	Pass

Ripple suppression at +12V is excellent! Even at full load (1500W) it doesn't exceed 30mV and this is what we call ground breaking performance. However the most impressive part is at CL2 test where +12V alone deliver 1500W and ripple on the same rail is constrained to below 20mV. Regarding the other rails, at 3.3V and 5VSB ripple suppression is good enough while at 5V it is mediocre, especially for a high-end unit.

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.