Gigabyte UD1000GM PG5 Review: The First PCIe Gen 5 Compatible PSU

The Gigabyte UD1000GM PG5 is the first PSU available on the market with a 12+4 pin PCIe connector.

Gigabyte UD1000GM PG5
(Image: © Shutterstock, Tom's Hardware)

Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Performance Rating

(Image credit: Tom's Hardware)

The overall performance is not competitive. With a longer hold-up time, better ripple suppression at 12V and 5V, and tighter load regulation and transient response on the minor rails, the UD1000GM PG5 would be closer to the competition. 

Noise Rating

The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

(Image credit: Tom's Hardware)

Under normal operating temperatures, the average noise output is high. 

Efficiency Rating

The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.

(Image credit: Tom's Hardware)

The average efficiency is high. 

Power Factor Rating

The following graphs show the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius and 115V/230V voltage input. 

The APFC converter has decent performance. 

MORE: Best Power Supplies

MORE: How We Test Power Supplies

MORE: All Power Supply Content

Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.