Corsair RM850x ATX V3.1 (3rd Gen 2024) Review

1. Introduction2. Bundle & Cabling3. External4. Internal5. Testing Methodology and Results6. Closing Thoughts7. View All Pages

See the RM1000x review HERE.

Today we take a look at the first in a new range of power supplies that we received recently from Corsair. The RMx series has received an update from Corsair to meet the latest ATX 3.1 standard. It also boasts a new fan control knob, allowing the user to adjust fan speed under light loads, from zero RPM to full speed. This unit is fully modular and adopts all Japanese capacitors with a low noise fluid dynamic bearing fan. Corsair supports this range with a 10 year warranty.

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 platform and resisting transient power spikes.
• Native 12V-2×6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
• 100% Japanese Capacitors: Delivers steady, reliable power and dependable electrical performance with 105°C-rated Japanese capacitors.
• Low Noise with 140mm Fan: A 140mm FDB fan with a specially calculated fan curve ensures low-noise operation even at full load, with a fan speed adjustment knob on the back for quick manual control.
• Six-Layer PCB: A modular PCB with 50% more layers provides improved voltage stability and heat dissipation.
• 50oC Maximum Operating Temperature: For reliable power even under high-stress conditions.
• Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
• Cybenetics Gold-Certified: Steady power output at up to 90% efficiency, less noise, and cooler temperatures.
• Zero RPM Fan Mode: For near-silent operation at lower loads.
• Resonant LLC Topology with DC-to-DC Conversion: Provides clean, consistent power and enables use of more energy-efficient sleep states.
• Ten-Year Warranty: Your guarantee of reliable operation for peace of mind through multiple builds.

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