Corsair RM1000x Fully Modular 1000W Cybenetics Gold Efficiency

PSU • Corsair • $ 118.30

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Overview

The Corsair RM1000x is a premium fully modular power supply designed for enthusiasts and professionals who demand uncompromising performance and reliability. With 1000 watts of continuous power delivered through a single +12V rail, it provides ample headroom for the most demanding CPUs and GPUs, including multi-GPU setups. Its Cybenetics Gold certification ensures high efficiency, reducing heat and energy costs while maintaining stable output.

Key Features

Fully Modular Cabling: Install only the cables you need for a clean, clutter-free build, improving airflow and aesthetics.
135mm Fluid Dynamic Bearing Fan: Whisper-quiet operation with Zero RPM Mode, which stops the fan entirely at low loads for silent computing.
Comprehensive Protections: Over-voltage, under-voltage, over-power, over-current, over-temperature, and short-circuit protections safeguard your components.
Premium Japanese Capacitors: Rated at 105°C for long-term reliability and stable power delivery.
ATX12V & EPS12V Support: Compatible with both ATX and EPS motherboards, making it versatile for various systems.

Performance and Efficiency

The RM1000x achieves Cybenetics Gold efficiency (up to 90% at typical loads), which not only reduces electricity bills but also minimizes heat generation. The single +12V rail delivers up to 83.3A, ensuring stable power to even the most power-hungry components. The Zero RPM fan mode keeps the PSU silent during light to moderate use, while the fan spins up only under heavy load to maintain optimal temperatures.

Who Is It For?

This power supply is ideal for high-end gaming PCs, content creation workstations, and overclocking enthusiasts. It provides enough power for flagship GPUs like the RTX 4090 and multi-GPU configurations, along with high-core-count CPUs. The fully modular design makes cable management easy, especially in compact or showcase builds.

Included Cables

1x 24-pin ATX motherboard cable
2x 8-pin EPS12V (4+4) CPU cables
4x 6+2-pin PCIe cables
14x SATA power cables
4x 4-pin peripheral (Molex) cables
1x Floppy drive adapter

With its robust build quality, extensive protections, and silent operation, the Corsair RM1000x is a top-tier choice for anyone building a high-performance system.

Key Specifications

Connector Type: ATX12V / EPS12V (fully modular)

Output Wattage: 1000 Watts continuous (single +12 V rail)

Form Factor: ATX (180 × 150 × 86 mm)

Wattage: 1000 W

Cooling Method: Air‑cooled, 135 mm Fluid Dynamic Bearing fan with Zero RPM Mode (semi-fanless / silent / cooling mode)

Design: Full Modular

Protections: OVP, UVP, OPP, OCP, OTP, SCP

Efficiency: Cybenetics Gold certified (80 PLUS Gold certified)

Cable Set: 1X 24‑pin ATX motherboard 2X 8‑pin EPS12V (4+4) CPU connector 4X 6+2‑pin PCIe 14X SATA 4X Four‑Pin Peripheral (Molex) 1X Floppy‑drive adapter

Detailed Parameters

Rated Power Output in Watts:: 1000
Form Factor:: ATX, EPS

Where to Buy

Amazon

Pros

Fully modular design for clean cable management
Cybenetics Gold efficiency reduces heat and power waste
Zero RPM fan mode for silent operation at low loads
High-quality Japanese capacitors rated at 105u00b0C
Comprehensive protections including OVP, UVP, OPP, OCP, OTP, SCP

Cons

No native 12VHPWR connector for RTX 40 series (requires adapter)
Slightly larger than some ATX PSUs, may not fit compact cases
Not ATX 3.0 compliant, so lacks PCIe 5.0 support

Frequently Asked Questions

Is the Corsair RM1000x compatible with ATX 3.0 motherboards?

Yes, it is compatible with ATX 3.0 motherboards as it uses the standard ATX12V and EPS12V connectors. However, it does not have the new 12VHPWR connector, so you may need an adapter for the latest GPUs.

Does the RM1000x support multi-GPU setups?

Yes, it provides four 6+2 pin PCIe connectors, which can support up to two high-end GPUs or multiple lower-power GPUs, depending on their power requirements.

What is the Zero RPM mode and how does it work?

Zero RPM mode allows the fan to stop completely at low loads (typically below 40% load), resulting in silent operation. The fan will only start spinning when the PSU is under higher load or temperature, ensuring both quietness and cooling.