Corsair RM850x 850 Watt ATX Power Supply - Black by Corsair

Corsair RMx series power supplies give you extremely tight voltage control, quiet operation, Gold-certified efficiency, and a fully modular cable set. Built with all Japanese 105°C capacitors, they’re a great choice for high performance PCs where reliability is essential. 80 PLUS Gold efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads. And, the fully modular DC cables make builds and upgrades easy, with clean, great-looking results.
 
 

All the Watts, None of the Decibels. 
CORSAIR RMx series fully modular power supplies are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC, with virtually silent operation.

 
 
80 PLUS Gold Certified
Gold certification ensures high efficiency operation for less excess heat and lower operating costs.
 
 
100% Japanese 105°C Capacitors
Premium internal components ensure solid power delivery and long term reliability.
 
 
Zero RPM Fan Mode
Since the fan doesn’t turn on until it’s needed, you’ll enjoy virtually silent operation at low and medium loads.
 

 
Compact Size
A 160mm-long casing ensures an easy fit in almost all modern enthusiast PC cases.

 
 
Ten Year Warranty
Your guarantee of reliable operation that will last across several system builds.
 
 
Fully Modular Cable Set
Installation is faster, since you can mount the power supply in the case first, and then attach only the cables you need.