NZXT C850 Gold ATX 3.1 Fully Modular 850 Watts 80 Plus Gold

PSU • NZXT • $ 119.99

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Overview

Reliable Power for Modern High-Performance Builds

The NZXT C850 Gold ATX 3.1 is a fully modular 850-watt power supply designed to meet the demanding needs of today's high-end gaming PCs and workstations. With 80 Plus Gold certification, it delivers up to 92% efficiency at typical loads, reducing heat and energy waste. Its native 16-pin (12VHPWR) connector ensures seamless compatibility with the latest NVIDIA and AMD graphics cards, while the included ATX 3.1 spec support guarantees stable power delivery even during transient power spikes.

Key Features

Fully Modular Cabling: Install only the cables you need for a clean, clutter-free build.
ATX 3.1 & PCIe 5.0 Ready: Native 12VHPWR connector for next-gen GPUs.
80 Plus Gold Efficiency: Up to 92% efficiency at 220V AC, lower heat and energy bills.
Silent Operation: 120mm Fluid Dynamic Bearing fan with Zero RPM Mode for near-silent operation under low loads.
Comprehensive Protections: OVP, UVP, OPP, OCP, OTP, SCP safeguard your components.
Compact ATX Form Factor: 150mm depth fits most cases while leaving room for cable management.

Performance and Reliability

The C850 Gold features a single +12V rail design that delivers stable and consistent power to your CPU and GPU, even under heavy overclocking. Its robust 120mm fan uses a fluid dynamic bearing for long life and quiet operation, with a semi-fanless mode that keeps the fan off until needed. The unit is backed by a 10-year warranty, reflecting NZXT's confidence in its durability.

Who Is It For?

This power supply is ideal for gamers and creators building a high-end system with a power-hungry GPU like the RTX 4080 or RX 7900 XTX. It's also a great choice for those who value clean aesthetics and modular cabling. Whether you're upgrading an existing rig or building from scratch, the NZXT C850 Gold provides the reliability and performance you need.

What's in the Box?

NZXT C850 Gold Power Supply
Fully modular cable set (24-pin ATX, 2x EPS12V, 4x PCIe, 1x 12VHPWR, 8x SATA, 4x Molex, floppy adapter)
AC power cord
Mounting screws and cable ties
User manual

Key Specifications

Connector Type: ATX 3.1 / EPS12V (fully modular)

Output Wattage: 850 Watts continuous (single +12 V rail)

Form Factor: ATX (150 × 150 × 86 mm)

Wattage: 850 W

Cooling Method: Air‑cooled, 120 mm Fluid Dynamic Bearing fan with Zero RPM Mode (semi-fanless / silent / cooling mode)

Design: Full Modular

Protections: OVP, UVP, OPP, OCP, OTP, SCP

Efficiency: 80 PLUS Gold certified (≈ 90 % @115 VAC / ≈ 92 % @220 VAC)

Cable Set: 1X 24‑pin ATX motherboard 2X 8‑pin EPS12V (4+4) CPU connector 4X 6+2‑pin PCIe 1X 16‑pin (12VHPWR) PCIe 5.0 8X SATA 4X Four‑Pin Peripheral (Molex) 1X Floppy‑drive adapter

Detailed Parameters

Rated Power Output in Watts:: 850
Form Factor:: ATX, EPS

Where to Buy

Amazon

Pros

Fully modular design for clean cable management
Native 12VHPWR connector for next-gen GPUs
80 Plus Gold efficiency reduces heat and power waste
Silent operation with Zero RPM fan mode
10-year warranty for long-term peace of mind

Cons

Not the smallest ATX PSU; may be tight in compact cases
No RGB lighting (if you want aesthetics)
Cables are not individually sleeved (though flat and flexible)

Frequently Asked Questions

Is the NZXT C850 Gold compatible with the RTX 4090?

Yes, the C850 Gold includes a native 16-pin (12VHPWR) connector, making it fully compatible with RTX 4090 and other PCIe 5.0 GPUs. However, for an RTX 4090, a higher wattage PSU (1000W+) is recommended for headroom.

Does the fan always spin?

No, the C850 Gold features a Zero RPM mode that keeps the fan off under low to moderate loads, ensuring silent operation. The fan will start spinning automatically when needed.

What is the warranty period?

NZXT offers a 10-year warranty on the C850 Gold, covering defects in materials and workmanship.

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