RM850x (RMx Series) Fully Modular Power Supply
#2 in Power Supply · Rated 4.7
850W Gold-rated modular PSU for quiet, efficient builds
The RM850x is a long-standing favorite in Corsair’s RMx lineup, offering reliable 850W power with 80 Plus Gold efficiency and modular cabling for tidy builds. It features a 140mm fan with a low-noise profile and Zero RPM mode to keep system acoustics minimal at typical gaming or productivity loads. The unit uses premium Japanese capacitors and a sturdy voltage regulation scheme to sustain clean rails during transient spikes from modern CPUs and GPUs. Its 10-year warranty and Corsair support ecosystem make it a dependable choice for mid-to-high-end gaming rigs, workstations, and multi-GPU setups. Availability across regions remains strong, contributing to its reputation as a staple in many global PC builds.
Features
- Fully modular cables
- ATX 3.1 compliant
- Zero RPM mode
- Gold efficiency
- 10-year warranty
Pros
- Quiet operation
- Strong warranty and availability
- Solid component quality
Cons
- Higher price than basic units
- Not the smallest form factor