CORSAIR CP-9020056-NA Modular Power Supply RM850 850W

( Brand: Corsair ), ( Manufacturer Part Number: CP-9020056-NA ), ( Model: RM850 ), ( Form Factor: Atx ), ( Manufacturer Warranty: No ), ( Maximum Wattage: 850w ), ( Rating: 80 Plus Gold ), ( Serial Number: 13357613000009510299 ), ( Type: Power Supply, Fully Modular )

Review CORSAIR Plus Gold 850w Fully Modular Power Supply

The Corsair RM850 (CP-9020056-NA) is an 850-watt modular power supply unit (PSU) that delivers high-efficiency power to support modern PC systems. This 80 Gold certified PSU ensures optimal power conversion and reduces energy waste, providing an operating efficiency of up to 90%.

The RM850 is designed with a fully modular layout, allowing users to configure their power cables according to their specific system requirements. This not only simplifies cable management within the case but also minimizes power loss and potential heat generation. Each cable is individually sleeved, adding a touch of aesthetics and enhancing the overall look of your build.

This Corsair PSU utilizes a quiet 140mm fluid dynamic bearing fan with a zero-RPM fan mode, ensuring the fan stays off at low and medium loads for near-silent operation. The fan's hydrodynamic bearing design ensures long-lasting reliability and stability.

The RM850 features a single 12V rail design, delivering a consistent power output, making it ideal for modern components that demand stable voltage levels. It also includes an over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP), over-temperature protection (OTP), and short-circuit protection (SCP). These safety features safeguard your components from potential damage caused by power surges or voltage drops.

The Corsair RM850 is constructed with high-quality Japanese 105 C capacitors, ensuring long-lasting performance and reliability. Its compact form factor (150mm deep) and 80 Gold certification make it an excellent choice for mid-tower builds seeking high-performance, efficient, and quiet power delivery.

The Corsair RM850x (CP-9020056-NA) is a high-performance, 850-watt modular power supply unit (PSU). Here are some pros and cons based on its key features:

1. High efficiency: With an 80 Gold certification, the RM850x operates at over 90% efficiency under typical loads, saving energy and reducing heat production.

2. Modular cabling: The modular design allows users to configure the cables according to their system requirements, reducing clutter and improving airflow.

3. Quiet operation: The RM850x uses a magnetic levitation fan that spins only when necessary, ensuring quiet operation even under heavy loads.

4. Fully modular: All cables are modular, including the 24-pin ATX and 4 4-pin EPS12V connectors, providing maximum flexibility.

5. High reliability: Corsair is known for its quality PSUs, and the RM850x comes with a 10-year warranty.

1. Price: The RM850x is more expensive than some other 850-watt PSUs on the market.

2. Size: The PSU is relatively large, measuring 150 mm x 86.2 mm x 140.2 mm (L x W x H), which may be an issue for some cases.

3. Limited connectors: While the modular design is a pro, it also means that some users may need to purchase additional adapters for certain components.

In conclusion, the Corsair RM850x (CP-9020056-NA) is a high-performance, reliable, and efficient power supply unit with modular cabling and quiet operation. However, it comes at a higher price than some competitors and may not have as many connectors out of the box. If quiet operation, high efficiency, and flexibility are priorities, the RM850x is a solid choice. If budget is a concern, other options may be worth considering.

If the Corsair RM850x fits within your budget and you value the features it offers, such as high efficiency, quiet operation, and modular cabling, it is a recommended choice for a high-performance power supply.

Details:

The ports remain in good shape with light to moderate wear. Specifications: Collection Computer Part Sub-Collection Power Supply Brand Corsair model RM850 MPN CP-9020056-NA Condition Used Type Form Factor ATX Fully/Semi/Non-Modular Fully Modular Rating 80 Plus Gold Output 850W MFG Warranty No UPC 7 Serial# 009510299 Cosmetic condition: This PC component is used and in good condition, showing some scratches scuffs consistent with moderate use. Wiped of all data. Functionality condition.

Corsair RM850 CP-9020056-NA 80 Plus Gold 850W Fully Modular Power Supply: $69.99. Please view our close up photos, as these are taken of the actual item being offered for sale. Thoroughly inspected by experts. Rigorously tested and cleaned.

Save money, reduce your impact, while enjoying the same great tech. Your New Home for, Pre-owned Tech: Get the best deals on everything from smartphones, tablet's, laptops, camera gear, and even gaming gear. Devices have not been reassembled. Condition is thoroughly assessed.

Specifications: Collection Computer Part, Sub-Collection Power Supply, Brand Corsair, model RM850, MPN CP-9020056-NA, Condition Us d, Type Form Factor ATX, Fully/Semi/Non-Modular Fully Modular, Rating 80 Plus Gold, Output 850W, MFG Warranty No, UPC 7, Serial# 009510299. This PC component is Sand in good condition, showing some scratches scuffs consistent with moderate use.

part #: cp9020056 prices

• $43.64-$79.95

specifications powsuppy:

• brand: Corsair
• mpn: Cp-9020056-na
• model: Rm850
• form factor: Atx
• manufacturer warranty: No
• maximum wattage: 850w
• rating: 80 Plus Gold
• serial number: 13357613000009510299
• type: Power Supply, Fully Modular

offer powsuppy:

• sold: 0
• availability: In Stock
• started: February 17, 2026
• quantity: 1
• options: Ship-to-home

returns powsuppy:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted
• method: Money back

shipping powsuppy:

• cost: $0.00
• carrier: USPS
• service: USPS Ground Advantage
• transit: 3-8 Days
• class: Standard
• type: Fixed

payments powsuppy:

• credit card: Discover
• other
• wallet: Google-pay

seller powsuppy:

• city: Orlando, Florida
• rating: 99.5%
• # reviews: 2438

general powsuppy:

• Computers/Tablet's Networking > Computer Components Parts > Power Supplies
• condition: Used

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