Customers are pleased with the RMx Series 850W power supply's ample power, modular design, and quiet operation. Many appreciate the high-quality components and easy installation. While some users reported an audible coil whine, the majority found the unit to run cool and efficiently. The positive feedback on quality and ease of use outweighs the relatively few negative comments.

Installation was quick and trouble free. The fan on the PSU is whisper quiet and sometimes completely silent. Modular design makes cable management much easier and frees up valuable case room.
Posted by Pete
Fully modular power supply for a high end build. The psu cables are very study and well built. Make sure to bend the cables according to your case before plugging in. Ample pcie connectors and dual cpu connectors for overclocking
Posted by Ankit
Great PSU, reliable, silent. Other than the fact that it is a bit overkill for my system, it is amazing. Have had it for a few days, no issues so far :) and the 10 year warranty, makes me believe it will stay the same.
Posted by svit
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.