Corsair RM850x Shift Fully Modular Power Supply — 850W, 80 Plus Gold, ATX 3.1, PCIe 5.1, Zero RPM, White (Renewed)

Engineered efficiency for modern builds

The CORSAIR RM850x Shift is an 850-watt, fully modular power supply designed to support contemporary PCs with ease. It delivers 80 PLUS Gold efficiency for cleaner power delivery and lower operating temperatures, while a stylish white casing adds a premium touch to your rig. As a Renewed unit, it combines tested performance with a like-new feel that fits both new builds and upgrades.

Reimagined cable management with a side interface

A standout feature is the revolutionary side cable interface, which keeps essential connections within easy reach as you assemble or upgrade components. Paired with fully modular micro-fit cables, it enables cleaner, more controllable cable routing without sacrificing accessibility.

• Revolutionary side interface for quick, ergonomic cable access
• Fully modular micro-fit connections for flexible setup
• ATX 3.1 compliance and PCIe 5.1 readiness for current and future GPUs
• Japanese 105°C-rated electrolytic capacitors support longevity and stable power delivery
• 140mm fluid dynamic bearing fan with a purpose-driven curve for reliability
• Zero RPM mode keeps the fan silent at low and medium loads

Quiet power with dependable performance

Designed for quiet operation without compromising performance, the RM850x Shift emphasizes stable voltages and efficient energy use. The Renewed warranty background offers reassurance for long-term use, backed by Corsair’s ten-year coverage. This combination is ideal for builds where both performance and a tidy interior matter.

• Near-silent cooling under light to moderate load thanks to Zero RPM mode
• Premium components and a robust design in a Renewed package
• Ten-year warranty enshrines long-term confidence and support

Real-world use cases

Whether you’re assembling a new high-performance workstation, upgrading an existing rig to accommodate PCIe 5.1 GPUs, or tidying up a space where airflow matters, this power supply offers a balance of efficiency, clean aesthetics, and practical features. The side interface and full modularity simplify routing around large coolers and multi-GPU configurations, while the white exterior provides a distinctive look that complements modern builds.

Key specifications at a glance

• 850 watts with 80 PLUS Gold efficiency
• ATX 3.1 compliance and PCIe 5.1 readiness
• Zero RPM mode for silent low-to-mid load operation
• White housing for a premium, contemporary appearance