Corsair
Corsair RM1000x 1000 Watt Power Supply
Best high-performance power supply for modern, power-hungry gaming builds.
The Corsair RM1000x is a powerful 1000W, fully modular power supply unit, representing the 2024 refresh built to meet the latest ATX 3.1 standards. This unit is future-ready, featuring native support for PCIe 5.1 and including the crucial 12V-2x6 connector for high-end graphics cards. It achieves Cybenetics Platinum efficiency, ensuring excellent power delivery, especially under light loads. Cooling is managed by a quiet 140mm FDB fan with a Zero RPM mode for silent operation during low usage. Its fully modular design and included individually stranded cables simplify clean system builds.
$179.99
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Owner Satisfaction
4.7
/ 5
Category Rank
19
/ 1062
#19 in Computer Power Supplies
Price vs Category Average
-81%
Below average
Total Wattage Output
1000
/ W
Who it's for
- Eco-conscious users looking to reduce electricity bills and heat
- Reliability-focused builders wanting components that last for years
- Quiet-computing enthusiasts who prioritize a silent workspace
Who should skip it
- Budget-conscious builders looking to minimize total system costs
- Efficiency purists seeking the absolute highest power conversion standards
- Small-form-factor builders working with limited internal chassis space
Performance breakdown
Power Efficiency
Cybenetics Platinum certification ensures minimal energy waste during high-demand tasks.
Future Compatibility
Native ATX 3.1 and 12V-2x6 support handle next-gen hardware with ease.
Acoustic Performance
Zero RPM mode keeps your workspace silent during light computing loads.
Cable Management
Individually stranded cables make routing through tight cases remarkably simple.
Build Reliability
A decade-long warranty reflects confidence in the unit's internal components.
Thermal Control
Large 140mm fan provides superior airflow while maintaining a low profile.
Key Specs
Total Wattage Output
1000 W
Efficiency Certification
Cybenetics Platinum
Form Factor
ATX
Dimensions
150 mm (W) x 86 mm (H) x 160 mm (L)
Fan Diameter
140 mm
Input Voltage Range
100 - 240 V
Modularity
Fully Modular
Weight
1.902 kg
Features
- Fully modular design for clean builds
- ATX 3.1 compliant with 12V-2x6 support
- Zero RPM mode for silent low-load operation
- Cybenetics Platinum efficiency certified
- Manual fan override control knob
- Includes flexible, individually stranded cables
- Comprehensive suite of electrical protections
- Backed by a 10-year warranty
What customers say
The Corsair RM1000x is highly regarded for its exceptional build quality and stable power delivery, making it a top choice for demanding PC systems. Users consistently praise the fully modular design for simplifying cable management and promoting better airflow within the case. A key feature is its near silent operation, thanks to the Zero RPM fan mode under lighter loads, which is perfect for quiet builds. While it carries a premium cost, customers see the 80 PLUS Gold efficiency and the extensive 10-year warranty as evidence of excellent long-term value. Despite minor stiffness in the cables, overall satisfaction centers on the unit’s reliability, efficiency, and longevity, securing its recommendation for serious workstations and gaming rigs.
Know before you buy
ATX 3.1 compliance ensures the power supply meets the latest industry standards for stability and power delivery. Specifically, it includes the 12V-2x6 connector, which provides a safer and more reliable power connection for modern, high-end graphics cards.
Yes, the RM1000x features a Zero RPM mode that stops the 140mm fan entirely when the system is under low to medium loads. This allows for completely silent operation while you are browsing or working.
Absolutely. Because every cable is detachable, you only need to plug in the ones your specific components require. This significantly reduces clutter in your case and makes routing cables much easier.
This rating confirms that the unit converts power from your wall outlet to your components with very little energy lost as heat. It is particularly efficient at lower loads, which helps reduce your electricity consumption and keeps the unit running cooler.
Yes, the RM1000x includes the native 12V-2x6 cable required for the latest PCIe 5.1 graphics cards. It also comes with individually stranded cables that are flexible and easy to route through tight spaces.
Corsair backs the RM1000x with a 10-year warranty, reflecting the high-quality components and robust electrical protections built into the unit. It is designed to be a long-term foundation for your PC builds.
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