CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully Modular 1000W Power Supply – Low-Noise, Cybenetics Gold Efficiency, Native 12V-2x6 Connector – Black
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Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, May 5
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Style: RMx (2024) - ATX 3.1
Size: 1000W
Features
- Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
- Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
- ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
- Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection no adapter necessary.
- Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
Description
CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel®, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty, RMx PSUs are the gold standard for many years to come.
Model Name: RM1000x
Brand: Corsair
Compatible Devices: Monitor
Connector Type: ATX
Output Wattage: 1000 Watts
Form Factor: ATX
Wattage: 1000 watts
Cooling Method: Air
Item dimensions L x W x H: 2.3 x 3.39 x 5.91 inches
Item Weight: 6.88 Pounds
Brand: Corsair
Series: RM1000x
Item model number: CP-9020271-NA/AM
Item Weight: 6.88 pounds
Product Dimensions: 2.3 x 3.39 x 5.91 inches
Item Dimensions LxWxH: 2.3 x 3.39 x 5.91 inches
Color: Black
Manufacturer: Corsair
Date First Available: December 1, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, May 5
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: RMx (2021)
Size: 750W
The Corsair RMX Series (2021) RM750x is a 750 Watt power supply that exemplifies reliability, efficiency, and modular design. This power supply unit (PSU) has surpassed my expectations, providing stable and consistent power delivery while offering a convenient and tidy cable management solution. The standout feature of the Corsair RM750x is its robust 750 Watt power output. This wattage is more than enough to handle high-end gaming rigs and power-hungry components, ensuring that my system gets the required power for peak performance. With an 80 Plus Gold certification, the RM750x guarantees high energy efficiency, reducing power wastage and lowering electricity bills. Its power efficiency also translates into less heat generation, leading to quieter operation and improved system longevity. The fully modular design of the RM750x is a game-changer for cable management. It allows me to connect only the necessary cables, minimizing clutter and maximizing airflow inside my PC case. This results in a clean and organized build with improved cooling capabilities. The PSU's zero RPM fan mode ensures silent operation during low to medium loads, as the fan only spins up when required, keeping noise levels at a minimum, even during intense gaming sessions. The RM750x comes equipped with high-quality Japanese capacitors, ensuring exceptional reliability and stability. These capacitors contribute to the PSU's long lifespan and consistent performance. Corsair is a reputable brand known for its high-quality PC components, and the RMX Series continues that tradition. The RM750x is a testament to Corsair's commitment to providing top-tier power supplies for enthusiasts and professionals. In conclusion, the Corsair RMX Series (2021) RM750x is a reliable and efficient power supply unit that offers stable power delivery and a modular design for easy cable management. Its 750 Watt power output, 80 Plus Gold certification, and silent operation make it the ideal choice for powering high-performance gaming systems. If you're looking for a premium power supply with excellent efficiency and clean cable management, the Corsair RM750x is the perfect option. I highly recommend this PSU for its outstanding performance and the peace of mind it brings to my PC build!
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Reviewed in the United States on August 3, 2023 by Steven
Style: RMx (2021)
Size: 850W
Really well made product. Just for a good set up. I paired it with a i7 13700k and a 4070 super with around 8th fans. Works really good with no issues. It is quiet and will allow an upgrade for a 5080 or something like that. Really good one
Reviewed in the United States on December 19, 2025 by Kenny E.
Style: RMx (2021)
Size: 750W
Clean, efficient, and easy to use. Running my 10850k, 4070, and all the other crap shoved in my tower with zero issues. Modularity is excellent for keeping your system from being a spaghetti mess by only using the cables you need. Included molex cable is excellent if your still using some older hardware or fan hubs. You get what you pay for and corsair is worth the cost to keep your system running stable.
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Reviewed in the United States on December 6, 2025 by joe c
Style: RMx (2024) - ATX 3.1
Size: 1000W
Great power supply, suits all my needs for a decent price. Being fully modular, it's pretty easy to setup.
Reviewed in the United States on January 16, 2026 by David Smith
Style: RMx (2024) - ATX 3.1
Size: 1000W
Best in class! The utilization of Japanese capacitors over the Taiwanese capacitors in the 1000 RMe is what pushed me to the RMx -however, I think as a whole, corsairs build quality is best-in-class. every cable feels hefty and well made, the fasteners lock in securely, with an audible click to ease your mind. Ill be a corsair customer for life after this psu!
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Reviewed in the United States on January 11, 2026 by Happy Customer
Style: RMx (2024) - ATX 3.1
Size: 1000W
Very solid power supply. I’m using it with a high-end CPU 14900K and RTX 5070 Ti and it runs perfectly stable, even under full load. The unit is very quiet, the fan rarely spins up and there is no coil whine. Being fully modular makes cable management much easier and the included cables are long enough for a big case. Great choice if you want a reliable PSU with plenty of headroom for future upgrades.
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Reviewed in the United States on December 4, 2025 by Leonardo Silveira Leonardo Silveira
Style: RMx (2021)
Size: 750W
I recently upgraded to the CORSAIR RM750x fully modular ATX power supply, and I couldn't be happier with my choice! This 750W unit not only boasts an impressive 80 PLUS Gold certification for high efficiency but also operates quietly, thanks to its low-noise fan. The Zero RPM mode is a fantastic feature—my system runs silently during light loads, which is a major plus for a quiet workspace. The fully modular design makes cable management a breeze. I appreciate being able to connect only the cables I need, which helps keep my build neat and organized. The quality of the cables is excellent, and they feel durable and well-made. Installation was straightforward, and the RM750x has handled everything I've thrown at it without a hitch. Whether I’m gaming, video editing, or just browsing, I have confidence that my components are getting the power they need. Overall, the CORSAIR RM750x is a top-tier power supply that combines efficiency, quiet operation, and ease of use. I highly recommend it to anyone looking to build or upgrade their system!
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Reviewed in the United States on October 28, 2024 by Really like it so far! Will be purchasing again!
Style: RMx (2024) - ATX 3.1
Size: 850W
Relatively easy to install, and it’s performance is as expected
Reviewed in the United States on December 16, 2025 by Nelson Tovar