Corsair RMx Shift Series, RM850x, 850 Watt, 80 PLUS GOLD Certified, Fully Modular Power Supply
SKU: CP-9020252-IN
Out of Stock
| Spec / Attribute | Value |
|---|---|
| Total Power Output | 850 W |
| Modularity | Fully modular (Type-5 micro-fit connectors) |
| Efficiency Rating | 80 PLUS Gold certified |
| Cooling / Fan | 140 mm fluid-dynamic bearing fan, with Zero RPM mode support |
| Standard / Compliance | ATX 3.1 / PCIe 5.1-ready (with 12V-2×6 GPU cables included) |
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Side-Mounted Modular Interface (SHIFT Design) — The PSU uses a patent-pending side-mounted connector panel (instead of rear), simplifying cable connection/management, especially in cases with side-access or tight layouts.
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ATX 3.1 & PCIe 5.1-Ready — Future-Proof Connectivity — Certified to modern ATX 3.1 standard and ships with 12V-2×6 (12VHPWR) GPU cables, making it compatible with current and next-gen high-power graphics cards.
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High Efficiency & Reliable Components — 80 PLUS Gold certification for efficient power conversion; equipped with 105 °C-rated Japanese electrolytic capacitors for stable, long-term performance.
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Silent Operation with Zero RPM Fan Mode — 140 mm fluid-dynamic bearing fan remains off under light to medium load, ensuring near-silent operation during everyday use; spins up only when high load demands cooling.
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Fully Modular Cabling & Clean Builds — Modular cables allow you to use only what’s needed, improving airflow and reducing clutter — useful for neat, tidy builds and easier installation or cable management.
Description
About Corsair RM850x Shift Desktop PSU
| Attribute | Specification / Details |
|---|---|
| Model / SKU | CP-9020252-IN / CP-9020252-NA |
| Continuous Power Output | 850 W total |
| +12 V Rail Output | Up to 70.8 A → ~849.6 W on +12 V |
| +3.3 V / +5 V Combined Output | Up to 150 W total (20 A on each rail) |
| +5VSB Output | 15 W (3 A) |
| AC Input / Power Specs | 100–240 V AC, 47–63 Hz, input current 5–10 A |
| Modular Cable System | Fully modular, using CORSAIR Type-5 micro-fit connectors — only use cables needed to reduce clutter and improve airflow |
| GPU / Connector Support | Includes PCIe 5.1 / 12V-2×6 GPU cables, EPS/ATX CPU connectors, SATA/Molex etc., compatible with modern GPUs |
| Cooling / Fan & Bearing | 140 mm fluid-dynamic bearing fan + Zero RPM mode (fan off at low/medium load) for silent operation |
| Protection & Safety Features | Over-current, over-power, over-voltage, short-circuit and other standard PSU protections |
| Build Quality & Components | 100% industrial-grade Japanese electrolytic capacitors rated for 105 °C for stable, long-term performance |
| Form Factor & Dimensions | ATX form factor — standard size, compatible with most mid-tower / full-tower cases that support ATX PSUs and allow side access for the modular panel |
| Warranty & Longevity | 10-year warranty; MTBF 100,000 hours |
One of the standout design choices is the side-mounted modular connector interface.
Instead of traditional rear-facing connectors, the Corsair RM850x Shift Desktop PSU locates the modular ports on the side of the unit — a design that greatly simplifies cable installation, organization, and routing, especially in cases with cable-management channels or when using full-tower chassis.
The cables use CORSAIR’s Type-5 Gen 1 micro-fit connectors, which are compact and help reduce bulk.
The Corsair RM850x Shift Desktop PSU is also built to be future-ready: Corsair RMx Shift Series Desktop PSU meets the latest ATX 3.1 standard and includes PCIe 5.1-ready 12V-2×6 (12VHPWR) GPU cables — allowing compatibility with current and upcoming high-performance graphics cards.
This ensures that your Corsair 80 Plus Gold Desktop PSU remains relevant even as component power requirements increase.
Efficiency and reliability are central to the design. With 80 PLUS Gold certification, the unit maintains high energy-conversion efficiency, reducing wasted power and excess heat.
Internally, the Corsair RMx Fully Modular ATX PSU uses industrial-grade, 105 °C-rated Japanese electrolytic capacitors, known for long-term stability and resilience — a crucial aspect for builds that run heavy workloads or operate for long durations.
When it comes to acoustics and thermal performance, the Corsair RM850x Shift Desktop PSU shines with a 140 mm fluid-dynamic bearing fan that supports Zero RPM mode.
Under light or medium workloads — typical for web browsing, coding, or idle — the fan remains off, rendering the PSU virtually silent.
Under heavier loads, the fan spins up to ensure adequate cooling, balancing performance with noise.
Part of what makes this PSU build-friendly is its fully modular cabling.
You only connect the cables you need: motherboard ATX, CPU EPS, PCIe, SATA, etc. — reducing clutter, improving airflow, and making cable routing easier and cleaner.
This modular flexibility is especially useful for neat, minimalist builds or cases with limited space.
The Corsair RMx 850 Watt Desktop PSU supports a broad range of connectors — ATX 24-pin, EPS/CPU connectors, multiple PCIe 6+2 pin connectors plus the 12V-2×6 GPU cable, SATA, Molex, and more — making it suitable for diverse builds including gaming rigs, productivity workstations, and multi-storage or multi-GPU setups.
Finally, the Corsair RM850x Shift Desktop PSU is backed by a 10-year warranty and is rated for 100,000-hour MTBF, signaling Corsair’s confidence in its durability and long-term reliability.
The Corsair RM850x SHIFT PSU delivers balanced power, modern compatibility, build-friendly modular design, silent cooling, and long-term reliability.
Whether you’re building a gaming rig with a powerful GPU today, or want headroom and compatibility for future upgrades — this PSU offers a robust, clean, and efficient power foundation.
For builders who value neatness, silence, and dependable performance, Corsair RM850x Shift Desktop PSU stands out as a smart choice.