Seasonic FOCUS GX ATX 3 (2024) GX-1000 1000 W power supply

1000 W ATX 3.1 power supply

The Seasonic FOCUS GX ATX 3 (2024) GX-1000 delivers 1000 W of continuous power through a fully modular ATX 3.1 design. An 80 PLUS GOLD rating confirms high efficiency across typical loads. A single 135 mm Fluid Dynamic Bearing fan handles cooling. The unit measures 140 mm long, 150 mm wide and 86 mm high.

Upgrade from older ATX units

Moving to this model adds native ATX 3.1 compliance and full modular cabling for cleaner builds. The 1000 W ceiling supports modern GPUs and multi-drive arrays without headroom concerns. The jump is worth it when your current supply lacks the 12V-2x6 connector or cannot sustain peak transient loads. Gold efficiency also reduces waste heat compared with Bronze or unrated units.

Check case depth and cable routing

Verify that your chassis accommodates a 150 mm wide power supply and the 140 mm depth allowance. Ensure the motherboard 24-pin, CPU 8-pin and PCIe 12V-2x6 cables reach their sockets without sharp bends. Confirm the rear mounting pattern matches standard ATX screw spacing. The 100-240 V input range works worldwide without a voltage switch.