CORSAIR AX Series fully modular power supplies deliver 80 PLUS Titanium efficient power and ultra-low-noise operation to complete your most ambitious builds.

World Class Electrical Performance

Superior voltage regulation and minimal ripple/noise ensures the highest quality and most consistent power for your PC, keeping your system stable and unlocking your motherboard’s true potential for overclocking.

80 Plus Titanium Certified

The AX850 delivers power at up to 94% efficiency, lowering energy consumption, noise, temperatures, and your power bill.

100% Japanese 105 degrees Capacitors

By using high-end electrolytic capacitors, AX Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply.

Zero RPM Fan Mode

The AX Series’ cooling fan doesn’t spin until you need it, for near-silent operation at low and medium loads.

135 Cooling Fan

Immensely powerful airflow, low noise operation and longer life thanks to a true Fluid Dynamic Bearing (FDB) fan.

Fully Modular Cables

Use only the cables you need for quick and easy installation, with stylish sleeving to simplify routing and cable management. Store your unused cables in the included cable bag.

Customisable Magnetic Side Labels

Customize your PSU to match your system’s style with three included magnetic side labels in red, white or blue.

Ten-Year Warranty

CORSAIR provides a ten-year warranty on all AX Series power supplies; your guarantee of reliable operation that will last across several system builds. If you need help, CORSAIR customer service and tech support are always on hand.