CORSAIR AX850 80+ Titanium Fully Modular Power Supply (850 W)

The CORSAIR AX850 is an 850-watt fully modular ATX power supply rated at 80 PLUS Titanium efficiency, meaning it delivers power at up to 94% efficiency under typical loads. This translates directly into lower heat generation, reduced fan noise, and lower electricity consumption compared to Bronze or Gold-rated units — a meaningful advantage for systems running at sustained loads. All internal capacitors are Japanese-made 105°C electrolytic capacitors, chosen for long-term reliability and consistent power delivery under high ambient temperatures. The unit is rated for continuous output at 50°C, making it suitable for demanding environments and high-performance builds including multi-GPU configurations. The AX850 features a Zero RPM fan mode: under low and medium loads, the 135mm Fluid Dynamic Bearing (FDB) fan remains stationary, resulting in near-silent operation. FDB technology is valued for its low friction, reduced noise, and extended fan lifespan compared to conventional sleeve bearings. When the load increases and active cooling is needed, the fan spins up smoothly. Cable management is simplified through a fully modular design — only the cables you need are connected, reducing clutter and improving airflow inside the chassis. All cables are sleeved in all-black for a clean aesthetic, and an included cable bag stores unused cables. Three magnetic side labels in red, white, and blue allow basic visual customisation. CORSAIR backs this unit with a 10-year warranty, reflecting confidence in long-term component quality. Verified Specifications: – Model: CP-9020151-UK – Continuous Power Output: 850 W – 80 PLUS Rating: Titanium (up to 94% efficiency) – Form Factor: ATX – ATX12V Version: v2.4 – EPS12V Version: v2.92 – Cooling: 135mm FDB fan with Zero RPM mode – Capacitors: 100% Japanese 105°C electrolytic – Continuous Output Rated Temperature: 50°C – MTBF: 100,000 hours – Connectors: 1x ATX, 2x EPS12V, 6x PCIe, 16x SATA, 6x PATA, 1x Floppy – Cable Type: Fully modular, sleeved, all black – Dimensions: 170mm x 150mm x 86mm – Multi-GPU Ready: Yes – iCUE Compatibility: No – Intel C6/C7 Sleep State Compatible: Yes – Modern Standby Compatible: No – Warranty: 10 Years