Cybenetics A+ noise rating and 50°C continuous operating temperature rating
Compact dimensions 160 × 150 × 86 mm and 2.89 kg weight
100,000-hour MTBF and comprehensive 10-year warranty
Modern Standby support and resonant LLC + DC-DC topology
Requires only 30mm side-panel clearance for SHIFT interface
In stock
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Experience Unrivaled Power and Simplicity with the CORSAIR RM850x SHIFT 850W Fully Modular ATX Power Supply
The CORSAIR RM850x SHIFT 850W is the ultimate fully modular ATX 3.1 and PCIe 5.1 compliant power supply engineered for high-performance PC builds that demand silent operation, effortless cable management, and rock-solid reliability. Delivering a continuous 850 watts of clean, stable power through a robust resonant LLC topology with DC-DC conversion, this PSU is Cybenetics Gold certified for up to 89% efficiency and A+ noise performance, ensuring lower power consumption, cooler temperatures, and whisper-quiet running even during intense gaming or content creation sessions. The revolutionary SHIFT cable interface places all modular Type-5 connectors on the side panel, giving builders unprecedented ease of access and dramatically simplifying cable routing in modern cases with minimal 30mm clearance required between the PSU and side panel.
Future-Proof Connectivity with Native 12V-2×6 GPU Support
Designed for the latest graphics cards including the NVIDIA GeForce RTX 50 Series, the RM850x SHIFT includes a native 90-degree 12V-2×6 (12+4-pin) 600W GPU cable featuring a dual-color connector that provides instant visual confirmation of a secure connection. An additional 600W adapter cable converts the 12V-2×6 to two 6+2-pin PCIe connectors, delivering a total of four PCIe connectors for maximum compatibility. Combined with two dedicated 6+2-pin PCIe cables, two EPS 4+4-pin CPU cables, one 24-pin ATX motherboard cable, nine SATA connectors across three cables, and four PATA connectors, every possible power need in a high-end system is covered with premium debossed-PVC cabling that is ultra-flexible and includes low-profile cable combs for a showroom-worthy, tidy build.
Silent Operation Meets Total User Control
At the heart of the RM850x SHIFT is a massive 140mm Fluid Dynamic Bearing fan with a magnetic dome structure that virtually eliminates vibration and noise. Zero RPM mode completely stops the fan at low-to-medium loads for true silence, while the integrated manual fan speed control knob lets enthusiasts override the profile and push maximum airflow whenever desired to exhaust heat from the case or cool the PSU under extreme loads. This level of customization is rare and makes the RM850x SHIFT perfect for both silent HTPC builds and overclocked enthusiast rigs alike.
Premium Japanese Components Built for Extreme Reliability
Every RM850x SHIFT power supply is constructed with 100% 105°C-rated Japanese industrial-grade electrolytic capacitors that deliver unwavering voltage stability and longevity even under high-stress conditions up to a continuous 50°C operating temperature. With an impressive 100,000-hour MTBF rating and backed by a generous 10-year warranty plus world-class CORSAIR support, this PSU is engineered to last through multiple system upgrades while maintaining peak performance and efficiency throughout its entire service life.
Optimized for Modern Case Builds and Perfect Cable Management
The compact 160mm × 150mm × 86mm dimensions fit every standard ATX chassis, while the fully modular Type-5 connector design and included debossed-PVC cable kit reduce clutter and improve airflow. Whether you are building a minimalist white-themed system or a high-airflow gaming rig, the RM850x SHIFT makes cable routing faster, cleaner, and more professional than ever before. Modern Standby compatibility further ensures instant wake-from-sleep performance with minimal power draw when the system is idle.
Why Choose the CORSAIR RM850x SHIFT 850W for Your Next Build
From the patented SHIFT side-mounted connectors and native 12V-2×6 GPU cable to the Cybenetics Gold efficiency, 140mm FDB fan with manual override, premium Japanese capacitors, and decade-long warranty, every aspect of the RM850x SHIFT 850W has been meticulously engineered for enthusiasts who refuse to compromise on performance, silence, or build quality. Available under SKUs CS-CP-9020299-NA and CP-9020299-NA, this power supply is the definitive choice for next-generation ATX 3.1 and PCIe 5.1 systems that require reliable 850-watt power delivery with effortless installation and long-term peace of mind.
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