CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black
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Availability:
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Sunday, Jul 19
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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: RMx
Brand: Corsair
Compatible Devices: Monitor
Connector Type: ATX
Output Wattage: 1000 Watts
Form Factor: Internal
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
Compatible Devices: Monitor
Connector Type Used on Cable: ATX
Output Wattage: 1000 Watts
Form Factor: Internal
Wattage: 1000 watts
Cooling Method: Air
Power Supply Design: Full Modular
Current Rating: 25 Amps
Number of Fans: 1
Maximum Input Voltage: 240 Volts (AC)
Minimum Input Voltage: 100 Volts (AC)
System Bus Connector Type: ATX
Item Dimensions: 2.3 x 3.39 x 5.91 inches
Item Weight: 6.88 Pounds
Model Name: RMx
Brand: Corsair
Manufacturer: Corsair
UPC: 840006667698
Mfr Part Number: CP-9020271-NA
Model Number: CP-9020271-NA
Warranty Description: 10 Year Manufacturer
Built-In Media: Item
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jul 19
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 (2024) - ATX 3.1
Size: 1000W
Corsair RM1000x – Reliable, Efficient, and Silent Powerhouse The Corsair RM1000x is a top-tier 1000W power supply that delivers exceptional performance, efficiency, and near-silent operation. Whether you're building a high-end gaming rig, a workstation, or a power-hungry overclocked system, the RM1000x stands out as one of the best choices in its class. 80 PLUS Gold Efficiency – Stable and Power-Efficient One of the key highlights of the RM1000x is its 80 PLUS Gold efficiency rating, ensuring that power delivery remains stable and efficient, minimizing wasted energy and heat output. This translates to lower electricity costs and reduced thermal stress on your components, making it a great long-term investment. Premium Components – Built to Last Corsair has packed the RM1000x with high-quality, 100% Japanese capacitors, which are rated for 105°C operation, ensuring durability and longevity. This power supply is built to handle continuous heavy loads while maintaining excellent reliability, making it ideal for enthusiasts, overclockers, and professionals who need uncompromising performance. Silent Operation – Zero RPM Mode A standout feature is the Zero RPM fan mode, which keeps the fan completely off during low to medium loads, resulting in silent operation. Even under heavy workloads, the 140mm fluid dynamic bearing fan runs whisper-quiet, ensuring a distraction-free experience whether you're gaming or working. Fully Modular – Clean and Hassle-Free Cable Management The fully modular design makes cable management a breeze. You only need to plug in the cables required for your build, reducing clutter and improving airflow inside your case. The included sleeved cables are of high quality and provide a clean, professional look. Reliable Power Delivery – Handles Any High-End Build With 1000W of power and a strong +12V rail, the RM1000x can handle high-end GPUs like the RTX 4090, AMD Radeon RX 7900 XTX, and multi-GPU setups with ease. It’s also perfect for overclocking, ensuring stable voltage delivery even under extreme loads. Final Verdict: 10/10 – A Power Supply You Can Trust The Corsair RM1000x is an outstanding PSU that combines high efficiency, silent operation, premium components, and excellent power delivery. Whether you're running a high-end gaming PC, an enthusiast workstation, or an overclocked rig, this PSU provides the stability and reliability needed for long-term performance. If you need a 1000W PSU that delivers on all fronts, the Corsair RM1000x is one of the best choices on the market. Highly recommended! 🔥💪
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Reviewed in the United States on January 28, 2025 by Zinoviy Kh
Style: RMx (2024) - ATX 3.1
Size: 1000W
I bought this Corsair RM1000x ATX 3.1 (2024) PSU to replace a faulty ASRock PSU. As one other review mentioned, the Cybenetics rating on the box for power efficiency has been recently updated from Gold to Platinum, which will help keep long term energy costs down for people who live in areas with expensive electricity. When unboxed, the power supply feels and looks like a premium product, and indeed it is. The modular cables in the box all come with individually sleeved wires, and the 12V 2x6 connector and ATX 24 pin connectors come with clamshell style cable combs preinstalled, which seems to be a newer development with this unit. I looked at multiple tech site reviews of this power supply and the only one with cable combs I found was the Kit Guru review, and those were manually installable traditional style combs. The cables did have a bit of a petrochemical smell to them, but it was far better than the ASRock unit I replaced. The cables on the RM1000x are also longer and more flexible than on the ASRock unit, making routing in my mid-tower case easier, specifically for the CPU (length) and ATX 24 pin (flexibility). The power supply performs exceptionally well, making absolutely no coil whine noise at any load, and works completely silently at loads below 500 watts. The fan control knob on the back of the unit comes out of the box set to 0 RPM low noise mode, leaving the fan off until the aforementioned 500 watt limit is exceeded. If you don't care about 0 RPM low noise mode, you can adjust the knob clockwise until it clicks, at which point you're manually controlling the fan, allowing you to set a constant fan speed anywhere in the fans RPM range. One thing to note is that the 12V 2x6 connector that comes in the box only has 2 of the four sense pins, but this is totally fine, as it powers my RTX 5080 without issue, so don't be concerned that two sense wires are "missing". I was extremely lucky to get this unit at a cheaper price only a day before it raised to its current price, but even around the $200 mark, this power supply is worth the price. Overall I give this power supply a 9/10, and only because I don't like that the fan is gray instead of black, which honestly is likely a complete non-issue for most people.
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Reviewed in the United States on May 31, 2025 by Marlena
Style: RMx (2024) - ATX 3.1
Size: 1000W
Corsair RM1000x (2024/2025 Refresh) I’ve been using the RM1000x series for years, but this latest refresh is a must-buy if you're running high-end hardware. Here is why this specific model is a step above the rest: The 12V-2x6 Safety Upgrade: This isn't just a rebranded cable. The 12V-2x6 standard fixes the "melting" issues from the older 16-pin designs by using shorter sense pins. If the cable isn't 100% seated, the PSU simply won't send full power, protecting your GPU from thermal damage. It's a huge peace of mind for anyone with a 40-series or 50-series card. Which was the exact reason I purchased it. If you are going to spend the money to buy the latest and greatest video card then by all means don't skimp on the power. Tactile Cooling Control: The Manual Fan Override Knob is a game-changer. It’s located right on the back panel next to the power plug, so it's fully accessible from outside your case. You can leave it on Zero RPM mode for total silence during work or manually crank it up to 100% during a marathon gaming session to keep the internals chilled. It's so satisfying to know that the fan that is inside PSU is not only running but as fast as you want it to because you can dial it in to your needs. Premium Internals: It uses 100% Japanese 105°C-rated capacitors, which are the highest tier for longevity. It’s Cybenetics Gold certified for efficiency and holds an A- noise rating, so even when it is working hard, it stays whisper-quiet. Build-Friendly Cables: The cables are "embossed," making them much more flexible and easier to route through tight spaces than the old stiff, sleeved versions. The Pro Tip: Register this PSU on the Corsair site immediately. It comes with a 10-year warranty. Corsair’s support is top-tier, and with a decade of coverage, this is likely the last PSU you’ll need to buy for the next several builds.
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Reviewed in the United States on December 18, 2025 by Jerry (Zell) Curry II
Style: RMx (2024) - ATX 3.1
Size: 1000W
Pros: - Only plug in the cables you actually need - simplified cable management - Quiet fan that only kicks on under load - Straightforward install, great for hobbyist-level builders Cons: - I didn’t find it sooner Full Review: I brilliantly managed to short out the power supply on my PC (PSA: Don't plug a USB-C cable into a USB-A port if you don't want to risk taking out your power supply...), and I bought this Corsair RM1000x in a pinch because it would arrive the quickest. I’m more of an inquisitive hobbyist than a tech expert so had assumed a power supply is just a power supply, but this one had a few features I lucked out on. Super clean and minimal cabling - no medusa-style tangle of wires coming out of the box, just plug in what you need. It took care of the rats nest I had previously by not having to hide the unnecessary cables inside the case. As for the cables I did need, I have an ATX mid-tower case and cable lengths were perfect - not too tight or too slack. The fan stays off during low-demand tasks, then spins up when I’m processing video or doing something more power intensive. It’s quiet when it does turn on, and most of the time it’s completely silent. If you’ve ever blown a power supply and need a replacement you won’t regret, this is it. Honestly, I wish I had this one from the start — it’s one of those parts that just works and makes your build cleaner and quieter.
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Reviewed in the United States on April 30, 2025 by Chris
Style: RMx (2024) - ATX 3.1
Size: 1000W
The description is somewhat misleading, as the 2024 refresh is a platinum power supply masquerading as gold (lower). The box and cybenetics website confirm it. That is a great performance anywhere near the price point. Well, always nice when a product delivers over the target spec rather than under, so kudos for Corsair. From the user perspective, the psu is great, runs rtx 5090 with no or minimal noise, the cables are individually sleeved and of high quality you'd expect from Corsair. This also helps quickly check the 12V-2x6 connector by hand to make sure no individual wire is super hot. The 12V-2x6 connector has a good latch and locks solidly. Clean, minimal packaging, easy to install. There are enough connectors to power almost any reasonable system. Overall, if you have gotten to this review, I strongly recommend buying it for most any use case in 2025.
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Reviewed in the United States on August 20, 2025 by D Soselia
Style: RMx (2024) - ATX 3.1
Size: 1000W
Knowing Corsair's generally solid reputation for power supplies, and seeing good reviews on Reddit, I grabbed the RM1000x to support my GPU upgrade from an NVIDIA 2080 to a 3090. An online calculator estimated I only needed about 700 watts for my system, but I wanted power to spare for eventual use in my next build. This model definitely felt like a quality unit, which lined up with what I was expecting. So far, so good. It's been running smooth for about a month now and I have no complaints, just steady power. The modular cables were a nice improvement over my previous supply and made the upgrade pretty easy. I only plugged in what I needed, making the cable routing look much nicer in my case. It's quiet and reliable and I haven't had to think about it since the initial install. Of course, that is exactly what you want when it comes to a power supply! I feel confident this was a good value and money well spent compared to cheaper alternatives.
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Reviewed in the United States on May 7, 2025 by BrianG
Style: RMx (2024) - ATX 3.1
Size: 1000W
Bought at the end of 2024. Recently (mid 2026) started having issues with PC freezing and shutting down. Finally heard a popping sound at the PC and it shut down, wouldn't power back on. PSU had died. Ended up putting my 10+ year old EVGA PSU back in and no problems found fortunately. My 3rd Corsair product to fail, the other 2 being AIO CPU coolers, but would not recommend based on my unfortunate track record. Look elsewhere.
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Reviewed in the United States on June 26, 2026 by Tyler
Style: RMx (2024) - ATX 3.1
Size: 1000W
picked it up to replace what I had thought was a dying power supply, from a older style with all the cables still attached, a mess, and a problem... Much nicer, plug in what I needed, no extra cables, extra power for the junk I am running that most likely did not need the extra juice...but hey, forward compatible and a 15 minute swap ^^ ( if anyone is curious, the reason I picked up a new power supply was the infamous bluescreen ( Kernel-Power event ID 41 ) which.........among other things noted could be faulty memory, motherboard, hard, power supply, toss a coin and guess... ) went through everything, finally swapped power supply...same issue with random blue screens with that error indicating power issues. Come to find out, after -way- too much rabbit hole trouble shooting.......it was none of those problems. It was a setting in Bios called C state that kept putting the chip into a sleep mode. Turned it off, no problems since! )
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Reviewed in the United States on June 30, 2025 by Vanyelashke