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Corsair

Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - Fluid Dynamic Bearing Fan - CORSAIR iCUE Software Compatible - 80 Plus Platinum Efficiency - Black

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, May 26
Order within 14 hours and 59 minutes
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Size: 1000 Watts


Features

  • Fully Modular Cabling: Connect only the cables your system needs, making clean and tidy builds easy.
  • Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes.
  • 140mm Fluid Dynamic Bearing (FDB) Fan: Delivers extremely quiet and long-lasting fan performance.
  • Powerful CORSAIR iCUE Software: Create custom fan curves, monitor power settings, and toggle between single to multi-rail overcurrent protection (OCP) on-thefly.
  • Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation.

Description

CORSAIR HXi Series Fully Modular Ultra-Low Noise Power Supplies deliver exceptional 80 PLUS Platinum efficient power and low-noise fluid dynamic bearing fan performance. ATX 3.0 and PCIe 5.0 compliance, HXi PSUs have every connection needed to power today’s most demanding PC upgrades. Powerful CORSAIR iCUE software enables custom fan curves, monitoring and adjusting power settings, and more thanks to a fully digital platform. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. Zero RPM mode ensures near-silent operation at low and medium loads. The HXi Series puts platinum power at your command.

Model Name: HX1000i


Brand: Corsair


Compatible Devices: Monitor, Personal Computer


Connector Type: atx,pcie


Output Wattage: 1000


Form Factor: ATX


Wattage: 1000 watts


Cooling Method: Air


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


Item Weight: 4.4 Pounds


Compatible Devices: Monitor, Personal Computer


Connector Type Used on Cable: atx,pcie


Output Wattage: 1000


Form Factor: ATX


Wattage: 1000 watts


Cooling Method: Air


Power Supply Design: Full Modular


Connector Quantity: 34


Number of Fans: 1


Fan Size: 140 Millimeters


Maximum Input Voltage: 240 Volts (AC)


Minimum Input Voltage: 100 Volts (AC)


Upper Temperature Rating: 105 Degrees Celsius


System Bus Connector Type: PCIe


Model Name: HX1000i


Brand: Corsair


Manufacturer: Corsair


UPC: 840006697350


Mfr Part Number: CP-9020259-NA


Model Number: CP-9020259-NA


Warranty Description: 10 year manufacturer


Unit Count: 1.0 Count


Item Dimensions: 7.09 x 5.91 x 3.39 inches


Item Weight: 4.4 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 26

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.

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Top Amazon Reviews

    • Great power supply
Size: 1000 Watts
Power supply delivers reliable, high-efficiency performance. It is very quiet and hasn't had any issues with power spikes or heavy loads. Fast and easy installation with fully modular cables. You can connect it to the iCUE software for monitoring or adjusting fans, which is a nice feature. Newer GPUS, double-check you don't need an adapter or something. Have not seen long-term reliability, but I don't see anything going out any time soon. ... show more
Reviewed in the United States on December 14, 2025 by Ventral Doral
    • Probably the best power supply maker out there. They do go above and beyond.
Size: 1000 Watts
For the record, I am reviewing the: Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - Fluid Dynamic Bearing Fan - CORSAIR iCUE Software Compatible - 80 Plus Platinum Efficiency - Black This is my third Corsair power supply. The first died in my other system after about 3 years. I then purchased one that was slightly more powerful and it has lasted more than 10 years and still running. I think that Corsair goes above and beyond when they put their packages together, you get all the cables you could ever need, and then some. The I have two bags full of extra cables that I am holding on to just in case I ever change things. I have to check from time to time to make sure the fan is working on the PW Supply, as it only comes on once in a while. I guess I have over killed my system with power but since I am running a really nice video card and a whole bunch of fans, I added everything up and then added an extra 100 watts just for safety. I don't want to over tax my system and then burn it out. This this saves me power by not using it unless it is needed. I love the per-wraped cables, and cable management is not bad with these as they do bend easily. The quality of all the connectors is top notch and I have not had a single cable go bad or have any problems. Installation was simple, and I love it. I don't think you can go wrong with a Corsair PS. Just do the math and make sure you get the correct one. ... show more
Reviewed in the United States on August 30, 2025 by Mark V.
    • High performance, highly efficient and very quiet.
Size: 1000 Watts
I upgraded from a Thermaltake 600W PSU, which was struggling to cope with my hardware needs due to a mixture of mechanical, SSD and M.2 NVME drives coupled with a 6700XT and a Ryzen 5900x processor. Despite my new RTX 4070 graphics card consuming less power than the previous 6750XT an upgrade was due. I initially intended to opt for the 850 RMx series. However, I'm extremely satisfied with my choice of the 1000HXi, which provides extra capacity. The power supply installed in my Thermaltake Core V21 case very easily without any reconfiguring. My PC, equipped with a Ryzen 5900x, is an occasional gamer but primarily used for running VMs and containers, meaning it's on for a significant part of the day. Although this PSU may have a higher upfront cost, its superior efficiency rating will eventually lead to savings compared to less efficient 850 RMx PSU I was initially considering. Both have a lengthy warranty period worth considering in your decision-making process. However, the extra headroom and efficiency were deciding factors for me. Advantages of this PSU include: Plenty of power The Zero DB fan, which is my top feature. Its internal components are of excellent quality Full modularity is a major plus. Many reviews rank it as an A-tier power supply. While I didn't require the iCUE software, it's a nice bonus. It's also somewhat future-proofed with ATX 3.0 & PCIe 5.0 ratings. On the downside: No instructions were provided, and the QR code on the box for the manual didn't work. Also, the cables are somewhat rigid, but they still seem to be of high quality. In conclusion, I would wholeheartedly endorse this PSU and wouldn't hesitate to purchase it again. ... show more
Reviewed in the United States on January 8, 2024 by David M Elliott
    • Best Power Supply I have used.
Size: 1000 Watts
The Corsair 1000w power supply is a high-performance, fully modular power supply that stands out for its reliability and ultra-low noise operation. The compatibility with ATX 3 and PICE 5 makes it future-proof. I assembled an i9-14900kf PC along with a 4090 video card for a computer needed to do 3D rendering. One of the key features of this power supply is its building quality. The fully modular design simplified cable management, reducing clutter and improving airflow within the case. The power supply has been stable and efficient; with a platinum certification, it guarantees high efficiency, low energy consumption, and reduced heat. The noise level while running CAD applications has been very low when running medium loads. Overall, the Corsair power supply has been an excellent choice, and I would recommend it to anyone building a high-end system. ... show more
Reviewed in the United States on July 31, 2024 by RAJNIKANT AMIN
    • High end power supply for your gaming needs.
Size: 1000 Watts
Awesome power supply. Build quality is rock solid. Nice connectors and cables. Pretty quiet and runs cool. Great power for the price.
Reviewed in the United States on February 4, 2026 by Tommy Calloni
    • Works great on my homelab server
Size: 1000 Watts
Purchased this because I thought it would be the next best thing to an actual server PSU, given that it has monitoring (And there is a Linux driver for that, the corsair-psu module is built right into the kernel and will grab its metrics just fine and expose them via sensors or sysfs), and I'm very satisfied with it. It really is efficient and quiet, I haven't seen the fan come on even once since my server only draws 400W (so far), and I also haven't seen it struggling with temperatures which I wouldn't know if it weren't for the monitoring. My cooling setup is less than ideal because my CPU cooler is pointing up into the PSU's intake, and even with 240W of heat from my EPYC blowing into it, it doesn't care at all, it's not going above 45C, and doesn't need its fan on. It's very nice to actually know that the unit is working fine given the circumstances, and it's very rare that a power supply actually stands out as good like this one does. ... show more
Reviewed in the United States on January 13, 2026 by Pattie

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