CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply Review

The CORSAIR RM850x is a high-performance, fully modular power supply designed to meet the demands of modern PC systems. Here is a detailed review of its features, pros, and cons.

Features and Specifications

• Wattage: 850 watts
• Modularity: Fully modular
• Energy Efficiency: 80 PLUS Gold certified, Cybenetics Gold certified
• ATX Compliance: ATX 3.0 compliant
• PCIe Support: PCIe 5.0 support
• Connectors:
  • 1x 24-pin ATX connector
  • 2x ATX 12V/EPS12V (4+4-pin) connectors
  • 3x PCIe (6+2) connectors
  • 2x EPS12V connectors
• Cooling System: 120mm rifle bearing fan
• Dimensions: 86mm (length), 150mm (height), 140mm (width)
• Weight: 54.4 ounces
• Power Cord Included: Yes
• Overload Protection: Yes
• Fan Mode: Zero RPM fan mode for silent operation at lower loads
• Warranty: 7-year manufacturer's warranty for parts and labor

Pros

1. Efficiency and Performance:

   • The RM850x delivers 90% efficiency at 50% load, making it an excellent choice for those who want to minimize power consumption while maintaining high performance.

2. Low Noise Operation:

   • The 120mm rifle bearing fan is designed to keep noise levels low, even under heavy loads. The Zero RPM fan mode ensures complete silence during idle or low-power usage scenarios.

3. Modular Design:

   • The fully modular design allows users to connect only the cables their system requires, making PC builds easier and more organized.

4. ATX 3.0 Compliance:

   • The power supply is compliant with the latest ATX 3.0 standard, supporting the PCIe Gen 5 platform and resisting transient power spikes.

5. Cybenetics Gold Efficiency:

   • In addition to 80 PLUS Gold certification, the RM850x also meets Cybenetics Gold standards, ensuring lower power consumption, less noise, and cooler temperatures.

6. Industrial-Grade Components:

   • The use of 105°C-rated capacitors ensures superb electrical performance and reliability.

7. Modern Standby Compatibility:

   • The power supply supports Modern Standby sleep mode, allowing for fast wake-from-sleep times and better low-load efficiency.

8. Compact Design:

   • The 140mm-long casing ensures an easy fit in most modern PC cases, making it versatile for various system configurations.

Cons

1. Size Considerations:

   • The RM850x is slightly larger than some other power supplies on the market, which might be a concern for users with smaller PC cases.

2. Additional Cost:

   • While the RM850x offers exceptional performance and features, it may come at a higher cost compared to other power supplies in the market.

Verdict

The CORSAIR RM850x is an exceptional power supply that delivers on all fronts. Its efficiency, modular design, low-noise fan, and solid build quality make it a reliable choice for any PC enthusiast or gamer. The ATX 3.0 compliance and PCIe 5.0 support ensure it can handle the latest hardware demands. While it may be slightly larger and more expensive, the RM850x is well worth the investment for those seeking high-quality power delivery.

Features Table