Reliable Operation, Fully Modular Cabling, and Optimized for Silence

The Corsair RM850 is fully modular and optimized for silence and high efficiency. It’s built with low-noise capacitors and transformers, and Zero RPM Fan Mode ensures that the fan doesn’t even spin until the power supply is under heavy load. And with a fan that’s custom-designed for low noise operation, it’s whisper-quiet even when it’s pushed hard.

80 PLUS Gold Certified Efficiency

The 80 PLUS Gold-rated efficiency saves you money on your power bill, and the low-profile black cables are fully modular, allowing for fast and neat builds. Like all Corsair power supplies, the RM850 is built with high-quality components and is guaranteed to deliver clean, stable, continuous power. For additional control, connect it to your Corsair Link system (available separately) and monitor fan speed and +12V current directly from your desktop.

High-Quality, Low-Noise Capacitors and Transformers

RM Series power supplies are designed with capacitors and transformers carefully selected to eliminate coil whine and other background noise that can be annoying in quiet environments.

Zero RPM Fan Mode

The efficient design of the RM850 generates minimal excess heat, so the fan doesn’t need to spin under low to medium loads. When pushing it hard, the thermal sensor controls the fan speed, providing necessary cooling without extra noise.

Corsair NR135L Noise-Reducing Fan

The custom-designed fan features an optimized blade profile for low-turbulence airflow and near-silent operation even at full speed.

80 PLUS Gold-Certified Efficiency

Highly efficient RM Series power supplies produce less heat and have lower operating costs.

Flat Black, Low-Profile Modular Cables

Use only the cables you need and leave the rest in the box for fast, easy, and great-looking builds.

Reliable, Continuous Power Delivery

Power ratings are continuous, not peak, providing superior protection for your PC. Corsair uses high-quality internal components, and the RM850 is guaranteed to deliver clean, stable, continuous power.

Corsair Link Compatible

The RM Series power supplies connect to Corsair Link hubs (available separately) for real-time monitoring of fan speed and power delivery directly from your desktop.