Corsair
Corsair CP-9020263-NA RM850e 850W PSU - ATX 3.0, PCIe 5.0
★★★★★
850WPCIe Gen 5
Reliable Power, Quiet Operation: Corsair RM850e (2023) Power SupplyThe Corsair RM850e is a fully modular, low-noise power supply designed for modern PCs. With ATX 3.0 and PCIe 5.0 compliance, 80 PLUS Gold efficiency, and high-quality components, this PSU delivers stable and efficient power for d...
$129.99*
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*Price sourced from Amazon.com. Last updated:Jun 17, 2026.Price and availability are subject to change.
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Overview
Reliable Power, Quiet Operation: Corsair RM850e (2023) Power Supply
The Corsair RM850e is a fully modular, low-noise power supply designed for modern PCs. With ATX 3.0 and PCIe 5.0 compliance, 80 PLUS Gold efficiency, and high-quality components, this PSU delivers stable and efficient power for demanding systems.
- Type: ATX Power Supply
- Wattage: 850W
- Efficiency: 80 PLUS Gold Certified
- Modularity: Fully Modular
- ATX 3.0 Compliant: Yes
- PCIe 5.0 Compliant: Yes
- Fan: 120mm Rifle Bearing Fan
- Capacitors: 105°C-Rated
Key Features
Fully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes.
Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
Specifications
Brand
Corsair
Model
CP-9020263-NA
Wattage
850W
Form Factor
ATX
Modularity
Fully Modular
Certification
Intel ATX 3.1
PCIe Support
PCIe Gen 5.1
Fan Size
120mm
Fan Bearing Type
Rifle Bearing
Capacitor Rating
105°C
Standby Feature
Modern Standby Compatible
Pros & Cons
👍 Pros
- Fully modular cabling design allows users to connect only necessary cables, improving airflow and reducing clutter
- Intel ATX 3.1 Certified, ensuring compatibility with the latest power standards and resisting transient power spikes
- Supports the PCIe Gen 5.1 platform, future-proofing builds for next-generation graphics cards
- Equipped with a 120mm rifle bearing fan featuring a specially calculated fan curve for quiet operation, even at full load
- Utilizes 105°C-rated capacitors, delivering steady, reliable power and dependable electrical performance
- Modern Standby Compatible, enabling extremely fast wake-from-sleep times and better low-load efficiency
- Offers 850W of power, suitable for high-performance gaming and enthusiast PC builds
👎 Cons
- The 850W output, while substantial, might be overkill for basic PC builds, leading to unnecessary cost
- Full modularity requires more individual cable connections compared to non-modular or semi-modular PSUs
- Rifle bearing fans are generally quieter but may not match the longevity of fluid dynamic bearing fans
- Compatibility with PCIe Gen 5.1 is specific to newer hardware and may not benefit older system configurations
- The ATX 3.1 certification is a newer standard, meaning older motherboards might not fully utilize its features
- While quiet at full load, some noise might still be present during operation due to the active cooling fan
- The "low-noise" claim is relative and subjective, without specific decibel measurements provided
Frequently Asked Questions
What are the key benefits of this power supply unit being fully modular?
The Corsair RM850e PSU is fully modular, which means you only need to connect the cables essential for your system build, reducing cable clutter and improving airflow.
Is this power supply unit compatible with modern PC components?
Yes, the Corsair RM850e is Intel ATX 3.1 Certified and compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes.
How does this PSU maintain quiet operation?
This power supply unit keeps quiet through its 120mm rifle bearing fan, which has a specially calculated fan curve to minimize noise even when operating under full load.
What kind of internal components contribute to its reliability?
The RM850e features 105°C-rated capacitors, which are designed to deliver steady, reliable power and dependable electrical performance for your system.
Does this power supply support modern standby features?
Yes, the Corsair RM850e is Modern Standby Compatible, which enables extremely fast wake-from-sleep times and contributes to better efficiency at low power loads.
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