Corsair
HX850 Power Supply
Best power supply for high-performance custom PC builds.
The Corsair HX850 is an 850-watt power supply unit designed for high-performance PCs. It features 80 PLUS Gold certified efficiency, ensuring lower energy consumption and reduced heat generation. The PSU offers quiet operation, with a thermally controlled fan that only spins when necessary, minimizing noise at low loads. Its modular cabling system allows users to connect only the cables they need, reducing clutter inside the PC case. This PSU is compatible with ATX12V v2.31 and EPS12V 2.91 standards, making it a reliable choice for demanding systems.
$169.99
Owner Satisfaction
4.5
/ 5
Category Rank
321
/ 1062
#321 in Computer Power Supplies
Price vs Category Average
-82%
Below average
EPS Connector
2
Who it's for
- Eco-conscious users seeking lower energy costs and cooler system temperatures
- System builders prioritizing clean aesthetics and improved internal airflow
- Long-term owners wanting reliable performance and extensive manufacturer support
Who should skip it
- Budget-focused builders looking to minimize total project costs
- Casual users with low-power components that do not require high wattage
- Compact PC enthusiasts working with restricted small form factor cases
Performance breakdown
Energy Efficiency
Gold certification ensures minimal power waste during high-intensity gaming sessions.
Acoustic Performance
Zero RPM mode keeps your workspace silent during light desktop tasks.
Cable Management
Semi-modular design significantly reduces clutter for a cleaner internal build.
Component Longevity
Dual ball bearing fan and seven-year warranty promise long-term reliability.
Power Headroom
850 watts provides ample capacity for modern high-performance GPU configurations.
Build Versatility
Standard ATX form factor fits most mid-to-large tower cases easily.
Key Specs
EPS Connector
2
SATA Connector
12
Fan Bearing Technology
Dual Ball Bearing
Dimensions
150mm x 86mm x 200mm
Modular
Semi
PSU Compatibility
ATX12V v2.31 and EPS12V 2.91 standards
Cable Type
Low-Profile, All Black
Floppy Connector
2
Features
- Quiet operation at low loads with a thermally controlled fan.
- Modular cabling for a clean build and improved airflow.
- High efficiency (80 PLUS Gold) for reduced energy consumption and heat.
- Reliable performance for high-performance PCs.
- Durable dual ball bearing fan for longevity.
What customers say
Customers consistently praise the Corsair HX850 Power Supply for its exceptional reliability and robust build quality. Many users highlight its consistent performance, ensuring stable power delivery for their systems. The fully modular design also receives positive remarks for simplifying installation and cable management, contributing to a clean build. Its quiet operation is frequently mentioned, adding to a premium user experience. Consumers feel confident in this power supply's long term dependability, making it a favored choice for demanding setups.
Know before you buy
Yes. The unit features a Zero RPM mode, meaning the 140mm fan remains completely off during low-load scenarios to ensure silent operation.
The HX850 is a semi-modular power supply. This means the essential cables, such as the main ATX power cable, are permanently attached, while the remaining cables can be added or removed as needed to reduce case clutter.
The HX850 follows the standard ATX form factor with dimensions of 150mm x 86mm x 200mm. While it fits most standard mid-tower and full-tower cases, you should verify that your specific case has enough clearance for the 200mm depth.
The 80 PLUS Gold rating indicates that the power supply is highly efficient, converting more power from your wall outlet into usable energy for your PC. This results in less wasted electricity and lower heat output compared to lower-rated units.
The HX850 includes six PCIe connectors, allowing it to support multi-GPU configurations or high-end graphics cards that require multiple power inputs.
Corsair provides a 7-year warranty for the HX850, reflecting the high build quality and the long-term reliability of the dual ball bearing fan.
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$170