CORSAIR RMe SERIES POWER SUPPLY
Corsair RM850e 850W Fully Modular ATX 3.1 Power Supply
Modern 850W power delivery with Cybenetics Gold efficiency, PCIe 5.1 compatibility, a native 600W-capable 12V-2x6 GPU cable and low-noise cooling for demanding PC builds.
Corsair RM850e at a Glance
Introduction
The Corsair RM850e 850W Fully Modular Power Supply (CP-9020296-IN) is designed for modern gaming PCs, enthusiast desktops and productivity workstations that require reliable power delivery and support for current graphics-card power connections.
With Intel ATX 3.1 certification and PCIe 5.1 compatibility, the RM850e includes a native 12V-2x6 GPU power cable rated for up to 600W. This makes it a suitable option for compatible modern graphics cards without relying on a separate multi-connector adapter for the primary 16-pin GPU connection.
Its fully modular design allows you to connect only the cables required by your system. Embossed cables with low-profile combs help create a cleaner build, while the compact 140mm-long chassis improves compatibility with many modern PC cases.
Cybenetics Gold efficiency, a thermally controlled 120mm rifle-bearing fan and Zero RPM mode help balance power efficiency, cooling and acoustic performance.
Key Features
850W Continuous Power
Delivers 850W of rated continuous output, with the full 850W available on the +12V rail for compatible processor and graphics-card power demands.
Cybenetics Gold Efficiency
Gold-rated power conversion helps reduce wasted energy and heat under suitable operating conditions. Cybenetics also assigns the model a noise rating of A.
Native 12V-2x6 GPU Cable
Includes a dedicated 12+4-pin GPU cable rated for up to 600W, designed for compatible modern graphics cards using the 16-pin power connection.
ATX 3.1 and PCIe 5.1
Designed to meet the ATX 3.1 power-supply standard and support PCIe 5.1-compatible graphics power connections for modern PC builds.
Quiet Cooling with Zero RPM
The 120mm rifle-bearing fan uses a thermally controlled fan curve. Zero RPM mode allows the fan to stop under sufficiently light loads.
Quality Internal Design
Features resonant LLC topology, DC-to-DC conversion and industrial-grade capacitors rated for 105°C, alongside a seven-year manufacturer warranty.
Power Delivery and Cooling Technology
The RM850e uses resonant LLC topology and DC-to-DC conversion to support stable power delivery across its output rails. Its single +12V rail is rated at 70.8A, equivalent to the full 850W output, for compatible CPU and GPU power requirements.
ATX 3.1 certification and PCIe 5.1 compatibility make this model suitable for modern builds that need support for newer GPU power connections. The included native 12V-2x6 cable is rated for up to 600W; actual GPU compatibility depends on the card's requirements and the complete system configuration.
Zero RPM mode lets the fan stop when cooling demand is sufficiently low. When additional cooling is needed, the 120mm rifle-bearing fan operates according to its thermal fan curve.
Modern Standby support is designed to enable fast wake-from-sleep behaviour and improved efficiency during low-load operation on compatible systems.
Technical Specifications
Cable lengths are nominal manufacturer-listed values with ±10mm tolerance. Confirm cable compatibility before replacing or mixing modular PSU cables; Type 4 describes Corsair cable compatibility and does not mean every Corsair PSU cable is interchangeable.
Ideal Use Cases
Modern Gaming PCs
A strong option for compatible gaming builds that need 850W of continuous power and a native 16-pin GPU power connection.
Content Creation
Suitable for compatible desktops used for video editing, 3D workloads, software development and other demanding applications.
Clean Custom Builds
Fully modular cables make it easier to connect only the power leads needed for the system and improve cable-management flexibility.
Quiet Enthusiast PCs
Zero RPM fan mode and a thermally controlled fan curve support quieter operation when the PSU is under sufficiently light loads.
Before You Build
- Check your CPU and GPU manufacturers' recommended PSU wattage and confirm the complete system's power requirements.
- The native 12V-2x6 cable is rated for up to 600W. Make sure the graphics card supports this connection and follow the card manufacturer's installation instructions.
- Use only the modular cables supplied for this PSU or replacement cables explicitly confirmed as compatible with the exact model. PSU-side pinouts are not universally interchangeable.
- The unit measures 140 × 150 × 86mm. Confirm case clearance, cable bend space and airflow before installation.
- For high-power GPUs or future upgrades, assess transient power requirements, connector needs and available headroom rather than choosing a PSU based on wattage alone.
Frequently Asked Questions
1. Is the Corsair RM850e an 850W power supply?
Yes. The RM850e is rated for 850W of continuous output, with the full 850W available on its +12V rail.
2. Is the Corsair RM850e fully modular?
Yes. All power cables are detachable, allowing you to connect only the cables needed for your particular PC configuration.
3. Does the RM850e support ATX 3.1 and PCIe 5.1?
Yes. This model is ATX 3.1 certified and PCIe 5.1 compatible, making it suitable for compatible modern PC components and GPU power connections.
4. Does it include a native 12V-2x6 GPU cable?
Yes. The package specification lists a native 12+4-pin 12V-2x6 cable rated for up to 600W for compatible graphics cards.
5. What does Cybenetics Gold mean?
Cybenetics Gold is an efficiency certification based on defined testing. Actual efficiency varies with load and operating conditions; the RM850e also carries a Cybenetics A noise rating.
6. What is Zero RPM mode?
Zero RPM mode allows the PSU fan to stop when the power supply is operating under sufficiently light loads and cooling demand is low. The fan resumes operation when additional cooling is needed.
7. What are the dimensions of the RM850e?
The RM850e measures 140 × 150 × 86mm. Check the PSU clearance and cable-routing room in your case before installation.
8. What warranty does the Corsair RM850e include?
Corsair and Indian retail listings specify a seven-year manufacturer warranty for the CP-9020296-IN model, subject to the applicable warranty terms and conditions.
Power Your Next-Generation PC
Explore power supplies, graphics cards and motherboards to build a balanced, compatible system with Clarion Computers.