# Corsair Professional Series  AX 850 Watt ATX/EPS Modular 80 PLUS Gold (AX850)

- Category: Power Supply
- Brand: Corsair
- Model: CMPSU-850AX
- Part number: CMPSU-850AX
- Price (US): $319.99
- Price last checked: 2026-08-06
- Rating: 4.0/5 from 152 Amazon reviews
- Warranty: 7 years
- Product page: https://buildmypc.net/component-details/power-supply/corsair-cmpsu-850ax/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Corsair |
| Model | CMPSU-850AX |
| Power | 850 W |
| Efficiency | 80+ Gold |
| Color | Black |
| Form Factor | ATX |

## Key Features

- An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.
- A Seven year warranty and lifetime access to Corsair's legendary technical support and customer service.
- 80PLUS Gold certified, delivering up to 90% energy efficiency at real world load conditions.
- High-quality Japanese capacitors provide uncompromised performance and reliability.
- 80PLUS Gold certified, delivering up to 90% energy efficiency at real world load conditions.
- A Seven year warranty and lifetime access to Corsair’s legendary technical support and customer service.
- High-quality Japanese capacitors provide uncompromised performance and reliability.
- A Seven year warranty and lifetime access to Corsair’s legendary technical support and customer service.
- An ultra-quiet double ball-bearing fan delivers excellent airflow at an exceptionally low noise level by varying fan speed in response to temperature.

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