Corsair RM850x Shift power supply CP-9020299-NA

Side-mounted modular interface

The RM850x Shift places every modular connector on the side of the unit instead of the rear. This layout lets builders plug and route cables before the power supply is secured in the case, reducing clutter in tight compartments. It is aimed at enthusiasts who want a cleaner interior without sacrificing the 850 W output of a full-size ATX design.

ATX 3.1 and PCIe 5.1 compliance

The unit meets the ATX 3.1 and PCIe 5.1 specifications, meaning it can deliver the transient power spikes demanded by modern graphics cards. A native 12V-2x6 cable is included, removing the need for adapters when connecting compatible GPUs. The 140 mm fluid-dynamic-bearing fan runs a calibrated curve that keeps noise at a Cybenetics A rating while maintaining thermal headroom.

850 watts of continuous power

At 850 W the supply comfortably feeds high-end CPUs and a flagship GPU together with storage, lighting and cooling peripherals. The 80 PLUS Gold rating confirms efficient conversion across typical loads, lowering waste heat and electricity cost. When total system draw approaches the rated maximum the protection circuits will engage, so builds that plan heavy overclocking or multiple top-tier cards should verify their peak requirements against this ceiling.