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Corsair

CORSAIR RM1000x ATX 1000W Power Supply – Black

  • Based on 9,010 reviews
Condition: Used - Very Good
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Arrives Saturday, Oct 24
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Set name: 1000W


Features

  • Fully Modular: Only connect the cables your system needs, making clean and tidy builds easier.
  • 135mm Magnetic Levitation Fan: Utilizes a magnetic levitation bearing and custom engineered rotors for high performance, low noise, and superior reliability.
  • EPS12V Connector: For wide compatibility with modern graphics cards and motherboards.
  • 100% All Japanese 105C Capacitors: Premium internal components ensure unwavering power delivery and long-term reliability.
  • Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.

Description

CORSAIR RM1000x Series fully modular power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM1000x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise.

Model Name: RM1000x


Brand: Corsair


Compatible Devices: Personal Computer


Connector Type: ATX


Output Wattage: 1000 watts


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 7.09 x 5.91 x 3.39 inches


Item Weight: 2 kg


Compatible Devices: Personal Computer


Connector Type Used on Cable: ATX


Output Wattage: 1000 watts


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Power Supply Design: Full Modular


Number of Fans: 1


Fan Size: 13.5 centimeters


Maximum Input Voltage: 240 volts_of_alternating_current


Minimum Input Voltage: 100 volts_of_alternating_current


System Bus Connector Type: 24 Pin


Item Dimensions: 7.09 x 5.91 x 3.39 inches


Item Weight: 2 kg


Model Name: RM1000x


Brand: Corsair


Number of Items: 1


Unit Count: 1 Count


Manufacturer: Corsair


UPC: 840006603559


Global Trade Identification Number: 59


Model Number: CP-9020201-NA


Mfr Part Number: CP-9020201-NA


Warranty Description: 10 year manufacturer


Item Highlight: Fully Modular, Low-Noise, Zero RPM Mode, 80 PLUS Gold, NA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 24

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View our full returns policy here.

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Similar Products

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The Corsair RM850x fully modular power supply unit (PSU) has been praised for its excellent efficiency and silent operation, with notable features including an impressive low-noise fan, exceptional power delivery, and a great build quality. One unique factor to consider, however, is the design of its shift model, specifically suited for side-mounted PSU slots; this may not be compatible with some cases and can present wiring and heat dissipation challenges.

Pros

  • 👍 High-quality build, solid, and durable
  • 🌟 Excellent power efficiency and power delivery
  • 🔇 Very quiet operation, with Zero RPM fan mode
  • ⚙️ Great modularity allowing for easy cable management

Cons

  • ⚠️ May not fit into smaller PC cases because of its size
  • 🔄 In the Shift model, side out connector may not be intuitive for some setups
  • 💼 The Shift model might cause some spacing issues in narrower cases
  • ⚡ Potential heat dissipation challenges due to wiring placement (again in Shift model)

Should I Buy It?

If you're seeking a high-quality, highly efficient PSU that offers seamless and quiet operation, the Corsair RM850x undoubtedly fits the bill. However, be mindful of whether the fully modular design suits your particular PC case and setup. If you're considering the Shift model, ensure that it fits with the space and wiring layout of your case. Overall, this PSU is certainly a worthwhile investment for tech-savvy users and gamers.

    • Outstanding Power and Efficiency for High-Performance Systems!
Style: RMx (2021) Size: 1000W
The Corsair RMX Series (2021), RM1000x, 1000 Watt power supply is an absolute powerhouse that has exceeded my expectations in every way. As an enthusiast with a high-performance system, finding a reliable and efficient power supply is crucial, and the RM1000x delivers exceptional performance. First and foremost, the power delivery of this PSU is outstanding. With a whopping 1000 watts of power, it effortlessly handles the demands of my system, including multiple graphics cards, high-end processors, and numerous peripherals. It ensures a stable and consistent power supply, preventing any fluctuations that could potentially harm my components. The efficiency of the RM1000x is equally impressive. It is 80 PLUS Gold certified, which means it operates with high energy efficiency, minimizing wasted energy and reducing heat generation. This not only helps to lower my electricity bills but also keeps my system running cooler, ultimately extending the lifespan of my components. Another notable feature of the RM1000x is its modular design. The fully modular cables provide excellent flexibility and ease of cable management. It allows me to connect only the cables I need, reducing clutter inside my system and improving airflow. The cables themselves are of high quality and feel robust, ensuring a reliable and secure connection. Corsair's attention to detail and build quality are evident in the RM1000x. The power supply unit is solidly constructed, and the fan operates quietly, even under heavy load. The zero RPM fan mode is particularly useful during idle or low-load scenarios, ensuring silent operation and minimizing unnecessary noise. Moreover, the RM1000x features an array of advanced protection features, including over-voltage, under-voltage, and short-circuit protection. These safeguards give me peace of mind, knowing that my system is well-protected against any potential electrical issues. ... show more
Reviewed in the United States on May 20, 2023 by Digitalfanatic
    • A winner
Style: RMx (2021) Size: 1000W
Solid performance, high quality
Reviewed in the United States on July 2, 2026 by Amazon Customer
    • Excellent and needed for RTX 30 cards
Style: RMx (2021) Size: 1000W
So this is a great psu, excellent quality and provides all the power I could ever need for my AMD rig, which has an RTX 30 series card, AMD Ryzen 5 5600x, 3 SSDs, a wifi card and 16GB of 3200Mhz ram. The quality is excellent and this thing feels like a tank. It comes with all the cables you would generally need for a gaming PC and more (I ended up having a leftover CPU cable as well as some molex cables and a SATA cable. PLEASE NOTE: I read all the reviews and questions about this PSU before buying and a lot of reviews were saying it does not come with enough PCIe cables to power a 3 plug RTX 30 series card. So I went out and bought a pack of PCIe cables for this so i would have enough (as the RTX 30 series cards need 3 8-pin connectors). Only to find out THIS PSU COMES WITH 3 8-PIN CONNECTORS (well the connectors are actually 6+2-pin by the way) so I bought the extra cables for no reason, however I'm a PC enthusiast so the cables will not go to waste. However I think it's pretty foolish that people are saying it doesn't come with enough cables when it actually DOES. I would highly recommend this PSU and I see it lasting a very long time as I have only ever used Corsair PSUs and never had one die on me. It seems sturdy and well made. It's also crazy quiet with no coil whine, I can put my PC on full load, and I cannot even hear this PSU, it makes it seem like it's not even struggling to provide the power needed for my PC, and that's awesome. ... show more
Reviewed in the United States on December 29, 2022 by ProjectChaos
    • Works Reliably and Cool
Style: RMx (2021) Size: 1000W
I have had this Corsair RM1000x (2021) Fully Modular ATX Power Supply in a Phanteks Enthoo Pro Full Tower Chassis without Window Cases PH-ES614PC_BK in service for about one year as I write this review. For the most part, assembly was very easy. I do video editing, audio editing, streaming, wordprocessing, browsing and email with my setup. I use all of my SATA ports and even have a plug-in eSATA card for more ports. So most of my drive bays are filled. Everything I have connected to my power supply and motherboard has been rock solid stable, and the case holds in all together. It just works exactly the way I want and have no anomalies. The power supply, motherboard and all components run cool in the case with an i7-13700K CPU, 128 GB of Crucial DDR5-4800 that is clocked at 5200 automatically set by the motherboard itself. My video card is a the very modest ASUS GeForce GT 1030 2GB GDDR5 HDMI DVI Graphics Card (GT1030-2G-CSM) because I transitioned my ancient setup from MBR to GPT and needed to be able to boot the old system in the new motherboard before updating the Windows 10 Pro config to GPT UEFI and still be able to boot legacy devices. Everything just worked like a Swiss Chronograph. I strongly recommend this power supply, the case, the ASUS ProArt Z790-Creator WiFi 6E LGA 1700, the Asus video card, the Crucial dram, and am also recommending the Crucial MX500 SATA drives and Intel i7-13700K I use. Is all of this the fastest? I have no idea. Does it boot and work reliably everytime so far? Absolutely! ... show more
Reviewed in the United States on November 1, 2023 by Buyer
    • Typical Corsair; works well.
Style: RMx (2021) Size: 1000W
Ever since Enlight became harder (then impossible) to source modern power supplies I've been using Corsair with no issues and this is no exception. I _never_ have problems with any of them, be it with voltage quality/stability, long term durability, noise levels or anything. This is the largest one I've gotten yet, and it's no different than the 650/750/850s etc I've used in the past. Modular cables (a main attraction for me) are great as usual, but be warned that they are NOT the same as all models of Corsair modular supplies. My only complaint is that this one, for some reason, is oriented the opposite of all previous supplys with the fan facing up into the case with no way to flip it... This is an issue for me as I use a specific model, also Corsair, computer case for all of my builds (I picked up a dozen years back on clearance when the local Tiger Direct closed) uses a bottom intake and filter system for the power supply. This renders it effectively useless of course. It's a minor inconvenience as I'm sure that's probably only a small percentage of cases that have that versus not, but it's still sort of irritating as I've *never* seem another supply oriented that way. Never the less, top notch. ... show more
Reviewed in the United States on August 13, 2022 by Douglas Cleland
    • Corsair RM1000x Fully Modular ATX Power Supply - 80 Plus Gold
Style: RMx (2021) Size: 1000W
Corsair RM 1000x Fully Modular ATX Power Supply - 80 Plus Gold is reliable, has a quiet operation and is easy to use.
Reviewed in the United States on May 18, 2026 by Chris Tingle
    • Outstanding power supply
Style: RMx (2021) Size: 1000W
I bought it when I upgraded my system to one of the new generation video cards (Radeon 7900XT) and it's working like a champ. The best thing you can say about your power supply is: it just works. If you notice your power supply - like snapping, glitching out, blue-screening, whining - then it's probably being overtaxed or not working well. My advice is to get a way bigger power supply than you need today. For example, if you calculate you're going to need 650 watts max, go with one with at least 750 watts, or better yet, 1000 watts. Why? Because good power supplies can last through several PC upgrades. Newer hardware (particularly video cards) have a larger power draw each generation. If you buy a big one today, it should last through more upgrades compared to one that's just barely big enough for now. ... show more
Reviewed in the United States on December 17, 2023 by Danewfixer
    • 6+2 pin daisy chained PCIE cables... why?
Style: RMx (2021) Size: 1000W
Got this PSU cause I knew it 1. had more than enough power needed for my new build and 2. the case it went into was designed by corsair, and was able to check clearance on everything. I didn't go with the Shift version of the PSU for the simple reason that although it's unique, I see a lot of people complaining about its practicality. So, I went with the 2021 version of the RM1000x. The pros are basic. Strong but also stiff cables with protection in the proper places. Very easy overall install & modularity we've came to be familiar with when it comes to modern PSU's. Quiet operation, & plenty of peace of mind knowing I have plenty of power for my build (6950xt + 13600k). CONS.... This is the biggest con thus far, and I will complain about it until the end of time. Not that it's ever been okay practice, but having your PCIE cables all have a pigtailed additional 6 pin is just miserable to deal with. My GPU requires two 8 pins & one 6 pin... that's three separate cables with three separate & dangling 6 pin pigtails that'll never be used. I can understand giving only 6+2's even though it should be practice at this point to have some full 8 pin's, but I'll never understand a 6+2's with pigtailed 6 pins on a 1000W unit..... JUST NO. Please, if you're reading this and considering this PSU, please keep in mind to use a separate PCIE 6+2 cable for each connection on the card, AND DO NOT USE THE PIGTAILED 6 PIN THAT'S ATTACHED TO THEM. For lower power cards back in the day this wasn't a huge deal but was still bad practice to daisy chain your PCIE connections like that. Nowadays, with the power these cards are capable of drawing, there's NO REASON a 1000w PSU would even give you the option to daisy chain. A pretty big & detrimental (in my opinion) overlook on Corsair's part. Luckily you can use a cable tie or strap & just bunch them all together but... no one that has built a pc will tell you it looks good. other than that one major annoyance that I deem to be a con, great power supply. ... show more
Reviewed in the United States on September 15, 2023 by Ken

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