Seasonic Connect 750 W Review - The Solution for Cable Management

Name: Seasonic Connect 750 W
Brand: Seasonic

crmaris

on Apr 24th, 2020,

in Power Supplies.

Manufacturer: Seasonic

Efficiency »

Test Setup

Primary Rails Load Regulation

The following charts show the voltage values of the main rails, recorded over a range from 60 W to the maximum specified load, and the deviation (in percent) for the same load range. Tight load regulation is an important characteristic for every power supply because it allows for constant voltage levels despite changes in load.

5VSB Regulation

Load regulation is tight on all rails but 5VSB. Given the minor rails are much closer to the load now, I expected even lower voltage deviations on these rails. Seasonic's next revision should move the standby rail into the Connect module as well.

Ripple Measurements

Ripple represents the AC fluctuations (periodic) and noise (random) found in the DC rails of PSUs. Ripple significantly decreases the life span of capacitors because it increases their temperature; a 10 °C increase can cut into a capacitor's life span by up to 50 percent. Ripple also plays an important role in overall system stability, especially when it is overclocked. The ripple limits according to the ATX specification are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - Seasonic SSR-750FA
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	8.3 mV	7.3 mV	15.6 mV	5.1 mV	Pass
20% Load	11.8 mV	7.7 mV	16.7 mV	6.0 mV	Pass
30% Load	14.6 mV	8.1 mV	15.9 mV	5.4 mV	Pass
40% Load	15.4 mV	7.4 mV	16.2 mV	5.5 mV	Pass
50% Load	12.7 mV	8.1 mV	16.0 mV	5.9 mV	Pass
60% Load	11.1 mV	8.5 mV	16.5 mV	6.0 mV	Pass
70% Load	11.2 mV	8.8 mV	17.3 mV	6.2 mV	Pass
80% Load	12.3 mV	9.1 mV	17.1 mV	6.8 mV	Pass
90% Load	12.7 mV	9.3 mV	18.2 mV	7.2 mV	Pass
100% Load	20.9 mV	10.2 mV	19.5 mV	7.7 mV	Pass
110% Load	22.6 mV	10.3 mV	18.1 mV	7.9 mV	Pass
Crossload 1	18.7 mV	10.4 mV	19.2 mV	7.3 mV	Pass
Crossload 2	17.5 mV	8.4 mV	17.8 mV	6.9 mV	Pass