Corsair
RM850x SHIFT 80 PLUS Gold Fully Modular ATX Power Supply
Best power supply for enthusiasts building clean, high-performance gaming PCs.
Experience exceptional power delivery with the CORSAIR RMx SHIFT Series fully modular ATX power supply. Featuring a revolutionary, patent-pending side cable interface, this PSU offers unparalleled convenience for cable management and system building. It delivers 850 Watts of 80 PLUS Gold efficient power, ensuring stable and reliable performance for your high-end components. The fully modular design allows you to use only the cables you need, reducing clutter and improving airflow within your PC. This power supply is designed for modern systems, offering a clean and efficient power solution.
$179.99
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Owner Satisfaction
4.6
/ 5
Category Rank
230
/ 1062
#230 in Computer Power Supplies
Price vs Category Average
-81%
Below average
Wattage
850
/ Watts
Who it's for
- PC builders prioritizing clean aesthetics and streamlined cable management
- Quiet-computing enthusiasts seeking efficient and silent power delivery
- Gamers upgrading to the latest high-performance power-hungry GPUs
Who should skip it
- Users with compact cases lacking side-panel clearance
- Budget-conscious shoppers looking for standard power supply pricing
- System builders with unique case layouts prone to cable clutter
Performance breakdown
Cable Management
The side-mounted interface makes routing cables significantly cleaner and more intuitive.
Power Efficiency
Gold certification ensures minimal energy waste during high-demand gaming or workloads.
Build Flexibility
Fully modular design lets you eliminate unnecessary clutter for better internal airflow.
Component Compatibility
Ready for next-generation GPUs with robust, stable power delivery for modern hardware.
Installation Ease
Side access simplifies connections, though case compatibility requires careful pre-purchase planning.
Power Stability
Active PFC provides consistent, reliable voltage regulation for sensitive high-end components.
Key Specs
Wattage
850 Watts
Efficiency Rating
80 PLUS Gold
Modularity
Fully Modular
Form Factor
ATX
ATX Version
Not specified
Universal Input Voltage Support
Yes
Power Factor Correction Type
Active PFC
Certifications
80 PLUS Gold
Features
- Revolutionary patent-pending side cable interface for easy access and convenient building.
- 80 PLUS Gold certified for high efficiency and reduced energy waste.
- Fully modular design for cleaner builds and improved airflow.
- Designed to be compatible with next-generation GPUs.
- Reliable and stable power delivery for demanding systems.
What customers say
Customers consistently praise the Corsair RM850x SHIFT power supply for its innovative side mounted cable connections, which significantly enhance ease of installation and cable management within PC builds. This unique design feature is a standout, simplifying what can often be a challenging part of system assembly. Beyond its thoughtful design, users frequently highlight the product's robust build quality and reliable performance, affirming its position as a premium component. The quiet operation further contributes to a positive user experience.
Know before you buy
The side-facing interface moves the cable connections to the side of the unit rather than the back. This makes it significantly easier to plug in or remove cables once the power supply is installed in your case, simplifying maintenance and cable management.
The RM850x SHIFT uses a standard ATX form factor, but because the cables exit from the side, you need to ensure your case has enough clearance in the side cable management area. We recommend checking your case specifications to confirm there is enough depth behind the motherboard tray to accommodate the side-exit cables.
850 watts is generally sufficient for most high-end single-GPU systems, including modern graphics cards and processors. However, if you are running multiple high-draw components or overclocking heavily, you should calculate your total system power consumption to ensure it stays within the 850-watt limit.
Fully modular means every cable can be detached from the power supply unit. You only need to plug in the cables required for your specific components, which significantly reduces clutter inside your case and improves internal airflow.
Yes, the RM850x SHIFT is designed to support modern, high-performance GPUs. It provides the stable power delivery required for next-generation hardware.
The 80 PLUS Gold rating guarantees that the power supply operates at a high level of energy efficiency, typically at least 90% at 50% load. This results in less wasted energy as heat and can lead to lower electricity costs over time.
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