Modern Standby is a upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. An additional resistor has been added that will result in the fan turning on prior to the condition that causes the PSU to shut down in the event that temperatures exceed 45°C. A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. For consistent, reliable power and superb electrical performance, each RM Series power supply features a robust resonant LLC topology with DC-DC conversion and 105°C rated industrial-grade capacitors.

The custom-designed fan has an optimized blade profile for low-turbulence airflow and near-silent operation even at full speed.

And, like all Corsair power supplies, the RM850 is built with high-quality components and is guaranteed to deliver clean, stable, continuous power. What are you powering with that PSU and how is the PSU oriented in the chassis (fan up or fan down)? The efficient design of the RM850 means minimal excess heat generation, so the fan doesn't even need to spin under low to medium loads. The first four digits of the serial number correspond with the date of manufacturer, so if a change is made in production, those numbers are going to be the best way to track it.

While some fanless units have orientation requirements, the RM Series can be mounted in any position just like any other actively cooled power supply. Complement your system's look with CORSAIR Premium Individually Sleeved Type 4 Gen 4 PSU Cables (sold separately), available in seven different colors and patterns. PLUS Gold rated efficiency saves you money on your power bill, and the low-profile black cables are fully modular, so you can enjoy fast, neat builds. The Cybenetics organization measures efficiency and noise levels across the PSU’s entire operational range, using more than 1,450 different load combinations.Corsair uses high-quality internal components, and the RM850 is guaranteed to deliver clean, stable, continuous power. Corsair innovations, like the first DSP-controlled desktop PC power supply, drive our focus on providing reliable, quiet and efficient PSUs for everything from basic desktop systems to one-of-a-kind dream PCs. Tried to make a ticket and couldn't because it isn't even in the system, but luckily had a chat support person assist with things so far and start a ticket on your end.