Corsair
RMx Series RM1000x
Best high-capacity power supply for demanding enthusiast gaming builds.
The CORSAIR RMx Series RM1000x is a 1000 Watt power supply unit designed for high-performance PCs. It features 80 PLUS Gold certification for efficient operation, reducing heat and energy costs. Built with 100% Japanese 105°C capacitors, it ensures reliable power delivery and longevity. The Zero RPM Fan Mode provides silent operation at low to medium loads, as the fan only activates when necessary. This fully modular PSU comes with a ten-year warranty, offering peace of mind for your investment.
$158.40
More RMx Options
Corsair RMx RPS0161 1000W Power Supply
$233.97
Corsair RM850x
$99.00
Corsair RM1000x 1000 Watt Power Supply
$179.99
RM750x
$144.99
Corsair RM750x 750 Watt Cybenetics ATX Fully Modular Power Supply - ATX 3.1 Compatible
$134.99
Corsair RM650x
$124.99
RM850x SHIFT 80 PLUS Gold Fully Modular ATX Power Supply
$179.99
RMx Series RM850x
$108.99
RM1000x (2021)
$234.99
RMx Series RM650x
$268.46
CORSAIR RM1000x Fully Modular ATX Power Supply
$189.99
RM1200x Shift
$254.99
Owner Satisfaction
4.7
/ 5
Category Rank
28
/ 1062
#28 in Computer Power Supplies
Price vs Category Average
-83%
Below average
Protections
OVP (Over Voltage) | UVP (Under Voltage) | SCP (Short Circuit) | OTP (Over Temp) | OPP (Over Power)
/ OVP (Over Voltage) | UVP (Under Voltage) | SCP (Short Circuit) | OTP (Over Temp) | OPP (Over Power)
Who it's for
- Silent PC enthusiasts seeking a distraction-free workspace
- Long-term builders prioritizing reliability and hardware longevity
- Efficiency-focused users looking to lower electricity bills
Who should skip it
- Budget-conscious shoppers prioritizing cost over premium features
- Mainstream gamers who do not need excessive power capacity
- Small-form-factor builders restricted by limited chassis space
Performance breakdown
Power Stability
Tight voltage regulation ensures consistent delivery under demanding high-performance loads.
Acoustic Performance
Zero RPM mode keeps the system whisper-quiet during standard daily tasks.
Build Longevity
Premium Japanese capacitors and a decade-long warranty guarantee long-term reliability.
Installation Flexibility
Fully modular cabling simplifies cable management for cleaner, easier system builds.
Energy Efficiency
80 PLUS Gold certification minimizes wasted heat and reduces overall power consumption.
Connectivity Options
Abundant PCIe and SATA connectors support even the most complex hardware configurations.
Key Specs
Protections
OVP (Over Voltage) | UVP (Under Voltage) | SCP (Short Circuit) | OTP (Over Temp) | OPP (Over Power)
EPS Connector
2
SATA Connector
11
Fan Bearing Technology
Rifle
Dimensions
150mm x 86mm x 180mm
Modular
Fully
PSU Compatibility
ATX12V v2.4 and EPS12V 2.92 standards
Cable Type
Sleeved and Flat Black Cables
Features
- Extremely tight voltage control for stable performance.
- Virtually silent operation at low and medium loads.
- Fully modular cable set for easier installation and cable management.
- High efficiency operation with 80 PLUS Gold certification.
- Premium internal components for solid power delivery and long-term reliability.
- Zero RPM Fan Mode for silent operation when not under heavy load.
- Ten-year warranty for reliable operation across multiple system builds.
What customers say
Customers consistently praise the Corsair RMx Series RM1000x for its exceptional reliability and robust build quality. Users frequently highlight its dependable performance, ensuring stable power delivery for demanding systems. The unit's quiet operation, often with its fan remaining off under typical loads, significantly enhances the user experience. Many appreciate the fully modular cabling, simplifying installation and improving cable management within their PC builds. This power supply is widely regarded as a premium choice, offering peace of mind and excellent long term performance, making it a highly recommended component for serious builders.
Know before you buy
A fully modular design means every cable can be detached from the power supply unit. This allows you to use only the cables your specific components require, which significantly reduces clutter and improves airflow inside your case.
The Zero RPM mode keeps the 135mm fan completely off during low to medium workloads, ensuring your system remains silent while browsing or performing light tasks. The fan will only spin up automatically once the power supply reaches a higher temperature threshold under heavy load.
Yes, the RM1000x follows the standard ATX form factor. However, because it is 180mm deep, you should verify that your specific PC case has enough clearance in the power supply shroud to accommodate the unit and the connected cables.
The 80 PLUS Gold certification indicates that this unit operates at high efficiency, meaning it wastes less electricity as heat. This results in lower energy consumption and helps the unit run cooler and quieter over time.
With 8 PCIe connectors, 11 SATA connectors, and 2 EPS connectors, this unit is well-equipped for high-performance builds. It can easily support multi-GPU setups and multiple storage drives without needing additional adapters.
Japanese capacitors rated for 105°C are considered the industry standard for high-end power supplies. They are designed to handle high heat and electrical stress more effectively than standard components, which contributes to the unit's long-term reliability and 10-year warranty.
Still have a question?
Ask Hayley anything about this product before you decide.