Enermax MAXREVO 1500 W Review

Name: Enermax MAXREVO 1500 W
Brand: Enermax

crmaris

on Oct 4th, 2012,

in Power Supplies.

Manufacturer: Enermax

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the EMR1500EGT 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 Enermax EMR1500EGT
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	16.3 mV	17.2 mV	11.8 mV	12.0 mV	Pass
40% Load	21.8 mV	21.7 mV	13.9 mV	16.2 mV	Pass
50% Load	25.2 mV	24.0 mV	15.1 mV	17.9 mV	Pass
60% Load	29.2 mV	26.6 mV	16.6 mV	20.3 mV	Pass
80% Load	36.9 mV	33.1 mV	20.8 mV	22.0 mV	Pass
100% Load	41.0 mV	40.0 mV	22.8 mV	31.4 mV	Pass
Crossload 1	65.6 mV	47.4 mV	28.3 mV	14.6 mV	Pass
Crossload 2	19.4 mV	25.3 mV	16.6 mV	23.3 mV	Pass

Ripple suppression on the +12V rail is very good and can only be characterized as average during the unrealistic CL1 test; considering, of course, the high-end category that this unit belongs to. The VRMs apparently affect the +12V rail significantly during the CL1 test, which increases its ripple a lot.
The 3.3V and 5VSB rails registered fairly low ripple while ripple suppression at 5V was average and, during the full load test only, very high for our tastes. Since the Platimax 1500 W, which uses the same platform, registered identical ripple on the minor rails, we concluded that the 5V DC-DC converter needs some tuning to become less noisy.

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 0.01 V) as standard.