Gigabyte UD750GM 750 W Review - No Lightning This Time

Name: Gigabyte UD750GM 750 W
Brand: GIGABYTE
Price: 130 USD

crmaris

on Jun 21st, 2022,

in Power Supplies.

Manufacturer: GIGABYTE

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 essential for every power supply because it allows for constant voltage levels despite changes in load.

5VSB Regulation

Load regulation is tight enough at +12 V, but not the minor rails.

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 a vital role in overall system stability, especially if overclocked. According to the ATX specification, the ripple limits are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - Gigabyte UD750GM
Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	8.1 mV	15.0 mV	9.8 mV	16.4 mV	Pass
20% Load	8.8 mV	15.0 mV	11.0 mV	16.1 mV	Pass
30% Load	15.5 mV	17.2 mV	12.5 mV	17.3 mV	Pass
40% Load	12.4 mV	16.5 mV	13.5 mV	17.2 mV	Pass
50% Load	12.7 mV	18.0 mV	14.7 mV	17.5 mV	Pass
60% Load	13.1 mV	19.0 mV	17.1 mV	17.1 mV	Pass
70% Load	14.4 mV	21.4 mV	19.3 mV	17.4 mV	Pass
80% Load	15.2 mV	21.9 mV	21.4 mV	17.8 mV	Pass
90% Load	15.9 mV	22.7 mV	23.4 mV	17.7 mV	Pass
100% Load	24.3 mV	24.8 mV	25.2 mV	22.3 mV	Pass
110% Load	25.6 mV	25.8 mV	27.1 mV	22.5 mV	Pass
Crossload 1	9.9 mV	24.4 mV	27.5 mV	15.3 mV	Pass
Crossload 2	8.2 mV	17.0 mV	32.7 mV	14.7 mV	Pass
Crossload 3	7.8 mV	17.5 mV	17.0 mV	14.1 mV	Pass
Crossload 4	23.3 mV	14.6 mV	10.8 mV	18.9 mV	Pass

Ripple suppression might not be competitive as the platforms PSUs in the same category use perform exceptionally well in this regard, but you cannot call it mediocre. Moreover, the UD750GM takes the lead from the P750GM on most rails.