Montech Century II 1200 1200 W ATX 3.1 power supply

ATX 3.1 power supply for high-wattage builds

This 1200 W unit targets system builders who need ATX 3.1 compliance and PCIe 5.1 readiness for current and upcoming platforms. The fully modular design keeps cable clutter to a minimum inside the case. A 135 mm FDB fan with zero RPM mode stays silent at low loads. Japanese capacitors are used throughout for long-term reliability.

Single 12 V rail delivers 100 A at 1200 W

The +12 V rail is rated for 100 A and can supply the full 1200 W, so one rail feeds every GPU and CPU connector without multi-rail balancing. Minor rails provide 20 A on +3.3 V and +5 V combined to 120 W, while -12 V and +5 VSB handle 0.3 A and 3 A respectively. 80 PLUS Gold and Cybenetics Platinum ratings confirm high efficiency across the load range.

150 mm depth fits standard ATX bays

At 150 mm long the unit slides into most mid-tower and full-tower chassis without clearance issues. Six 6+2-pin PCIe connectors and twelve SATA power plugs support multi-GPU arrays and large storage counts. The 12V-2x6 cable is included for native PCIe 5.1 graphics cards. Full modularity lets you connect only the cables your build requires.