Gigabyte UD1000GM PG5 1000 W Review - The First PCIe 5.0 PSU

Name: Gigabyte UD1000GM PG5 1000 W
Brand: GIGABYTE
Price: 160 USD

crmaris

on May 13th, 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 very tight at +12 V, which matters the most. It is loose on 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 when it is overclocked. According to the ATX specification, the ripple limits are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - Gigabyte UD1000GM PG5
Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	7.4 mV	10.0 mV	6.1 mV	7.8 mV	Pass
20% Load	11.9 mV	11.9 mV	6.5 mV	9.4 mV	Pass
30% Load	12.4 mV	14.6 mV	6.8 mV	9.8 mV	Pass
40% Load	13.2 mV	15.1 mV	6.9 mV	10.7 mV	Pass
50% Load	15.9 mV	17.4 mV	7.8 mV	13.6 mV	Pass
60% Load	17.1 mV	19.5 mV	8.3 mV	13.5 mV	Pass
70% Load	20.0 mV	22.0 mV	9.0 mV	14.9 mV	Pass
80% Load	22.1 mV	24.0 mV	15.8 mV	21.0 mV	Pass
90% Load	24.1 mV	25.7 mV	15.5 mV	23.3 mV	Pass
100% Load	32.0 mV	30.5 mV	18.0 mV	27.3 mV	Pass
110% Load	37.8 mV	32.1 mV	19.2 mV	29.8 mV	Pass
Crossload 1	14.9 mV	21.3 mV	21.4 mV	20.0 mV	Pass
Crossload 2	12.8 mV	17.5 mV	12.2 mV	18.3 mV	Pass
Crossload 3	7.5 mV	15.2 mV	19.9 mV	18.2 mV	Pass
Crossload 4	31.9 mV	26.1 mV	8.6 mV	27.8 mV	Pass