GIGABYTE GP-UD1000GM 1000W 80 Plus Gold Modular Power Supply: specs

The GIGABYTE GP-UD1000GM is a 1000-watt ATX power supply for desktop computers. It is fully modular, carries 80 Plus Gold certification and uses a single +12V rail. It is meant for builds that need plenty of power headroom, such as systems with a powerful graphics card.

What 1000W means in practice

The wattage is the maximum power the unit is designed to supply to the whole system. Most PCs draw far less than that most of the time, and a power supply typically runs most efficiently somewhere in the middle of its range. A higher wattage is useful when you have a power-hungry processor and graphics card, or plan to upgrade later. To size a supply, add up the rated power of your components and use the manufacturers' recommendations.

Single +12V rail

Modern PCs take most of their power from the +12V output. GIGABYTE says the single-rail design gives exceptional power output and stability. With a single rail, all the 12V capacity is available to any connector, so you don't need to balance which cables feed which parts. Multi-rail designs split it up, usually with protection on each rail.

80 Plus Gold

80 Plus is a certification programme that tests how efficiently a power supply converts mains AC to the DC a PC uses. Gold is a mid-to-upper tier, requiring higher efficiency at set load points than the Bronze and Silver levels. In general, that means less energy lost as heat. The certification does not say how quiet the unit is.

Fully modular cables

Fully modular means every cable, including the main motherboard cable, plugs into the power supply rather than being attached to it. You connect only the cables you need, which usually makes the build tidier and improves airflow in the case. Use the cables that come with the unit, because the pin layouts on the supply side are not standardised across brands.

Japanese capacitors

GIGABYTE highlights Japanese capacitors, one of the high-quality materials it names. Capacitors smooth the electrical output inside the supply, and brands often point to their choice of capacitors as part of build quality.

Size and form factor

The ATX form factor is the standard for desktop cases. The unit measures about 5.5 x 5.9 x 3.4 inches and weighs 6.0 lb (roughly 2.7 kg). Check your case's power supply space, particularly in compact cases.

Who it suits

It suits desktop builders who want a high-wattage, modular supply with a single 12V rail for a demanding system.

What to check before you buy

• Add up your components' power needs and compare them to the unit's wattage.
• Confirm the case takes a standard ATX power supply and has room for the unit and its cables.
• Check the connectors that the unit provides against your graphics card, such as 8-pin or 12VHPWR types.
• Look at the model number carefully. The listing's description text mentions the GP-UD850GM, a different wattage, so confirm the unit is the 1000W model.
• Follow your local electrical codes, and the manual, when installing and handling power equipment. Unplug the supply before working inside the case.

The short version

• 1000W ATX power supply, model GP-UD1000GM.
• 80 Plus Gold certified, with a single +12V rail.
• Fully modular cables, for neater builds.
• Japanese capacitors, as GIGABYTE highlights.
• Check connectors, case space and the model number before buying.

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