This article covers NZXT C750 PC電源ユニット 750W 80PLUS Gold.

Overview

The NZXT C750 is a fully modular 750W power supply unit certified 80PLUS Gold, designed for ATX systems. It offers a clean and efficient cable management solution by allowing only the necessary cables to be connected. Equipped with a 135mm PWM-controlled FDB (Fluid Dynamic Bearing) fan, it delivers quiet operation even under moderate loads. The C750 features MCU-based protection circuitry that continuously monitors voltage, current, and output power to ensure stable and safe operation. Launched in 2022, this PSU strikes an excellent balance between reliability, silence, and cost for mid-range to upper-mid-range gaming or workstation builds.

Compatibility Guide

The NZXT C750 conforms to the standard ATX form factor and fits into virtually any ATX-compatible case. Its fully modular cable set includes a main 24-pin ATX connector, one 4+4-pin CPU/EPS connector, two 6+2-pin PCIe connectors for graphics cards, and multiple SATA and peripheral connectors. With 750W of continuous output, it comfortably supports single-GPU configurations such as an RTX 4060 Ti or RTX 4070 paired with a mainstream CPU like the Core i5 or Ryzen 5. For higher-end builds featuring an RTX 4090 or a flagship processor, a 850W or higher PSU is recommended.

Product Info

The C750 boasts an 80PLUS Gold efficiency rating, meaning it maintains at least 87-90% efficiency under typical loads, reducing waste heat and electricity costs. The black sleeved cables match the matte-black chassis for a cohesive look. NZXT backs this unit with a remarkable 10-year warranty, underscoring its build quality and longevity. In Japan, it is sold as the authorized model PS1191 through channels like . Market positioning places it firmly in the mid-range segment, but with features (fully modular, long warranty, quiet fan) that rival some premium units.

Best Use Cases

  • First-time PC builders: Fully modular design simplifies cable routing and makes assembly easier, while the 750W capacity is ideal for entry-to-mid-level gaming rigs without future-proofing concerns. - Silence-conscious users: The 135mm FDB fan operates quietly under low loads; while there is no official semi-fanless mode, the fan is nearly inaudible in typical desktop use. Perfect for home offices, media centers, or quiet gaming setups. - Mid-range upgraders: If you plan to run a RTX 4070-class GPU with a Ryzen 7 or Core i7, 750W gives you ample headroom for stable operation without overspending on higher wattages.

Things to Consider

The primary limitation is the 750W capacity—it is insufficient for flagship graphics cards like the RTX 4090 or RX 7900 XTX, which typically require 850W or more. Users aiming for such top-tier components should consider a higher-rated PSU. The C750 does not feature a semi-fanless (zero RPM) mode, so the fan always spins at a low speed even at idle (though it remains quiet). Competitors like the Seasonic Focus GX-750 and Corsair RM750e offer similar specs, with the Corsair model including a zero-RPM mode. Also, the cables are standard gauge—adequate for most cases but not as soft as custom paracord cables. Finally, double-check that your case supports ATX PSU depth (140mm depth is standard; the C750 is about 150mm deep, fitting most mid-tower and larger cases).