Tom's Hardware reviewed the Gigabyte Gaming 1000GM PG5, a 1000W ATX 3.1 power supply built by Taiwanese OEM HEC. The unit carries 80 PLUS Gold logos on the box, but it actually earned Platinum certifications from both CLEAResult and Cybenetics. It features a native 12V-2x6 connector, a 135 mm fluid dynamic bearing fan, and all-Japanese capacitors, with a ten-year warranty and a $170 price.
The headline feature is T-Guard, a thermal monitoring system for the 12V-2x6 connector that can cut power to the graphics card if the connector overheats. This is Gigabyte's response to the known PCIe 5.1 connector overheating issue. The review notes that the bundle is basic—no Velcro straps, cable combs, or even mounting screws—but the flat embossed cables are flexible and easy to route.
In testing, the PSU delivered Platinum-level efficiency and quiet operation at typical loads. Under hot and heavy load, however, the fan gets loud. Tom's Hardware calls overall electrical performance average for its class, but praises the thermal/noise balance and the peace of mind T-Guard offers high-end GPU owners. The review concludes it is a sensible choice, especially given the ten-year warranty.