Super Flower Leadex Gold 750 W Review

Name: Super Flower Leadex Gold 750 W
Brand: Super Flower

crmaris

on Feb 27th, 2014,

in Power Supplies.

Manufacturer: Super Flower

Performance Rating, Performance per Dollar, Noise & Efficiency Rating »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the Leadex Gold 750 W 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 - Super Flower SF-750F14MG
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	7.2 mV	5.6 mV	9.2 mV	6.1 mV	Pass
40% Load	9.3 mV	6.5 mV	9.5 mV	6.5 mV	Pass
50% Load	10.6 mV	6.7 mV	10.6 mV	6.9 mV	Pass
60% Load	10.2 mV	7.4 mV	10.6 mV	7.9 mV	Pass
80% Load	11.8 mV	8.6 mV	11.9 mV	8.5 mV	Pass
100% Load	13.0 mV	9.9 mV	12.7 mV	9.8 mV	Pass
110% Load	14.4 mV	10.1 mV	14.3 mV	10.3 mV	Pass
Crossload 1	7.3 mV	8.1 mV	10.9 mV	6.1 mV	Pass
Crossload 2	13.3 mV	8.4 mV	11.3 mV	9.8 mV	Pass

Super Flower's engineers are masters of ripple suppression and this unit is crystal-clear proof of this. The ripple values our scopes showed were simply jaw dropping! Ripple on all rails was incredibly low during even the overload test where we exceeded the limits of this unit by a good margin, with the +12V rail producing one of the lowest measurements we have ever taken! Great work SF! If we had shares in the company, we would give its engineers an extra bonus for their marvelous work 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 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 the standard.