Corsair HX1000i Power Supply Review

The Corsair HX1000i has silent operation and top-notch build quality.

By Aris Mpitziopoulos
last updated
Corsair HX1000i
(Image: © Tom's Hardware)

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Performance Rating

(Image credit: Tom's Hardware)

The performance difference is not huge with other similar spec PSUs, but we expected the HX1000i to perform even better, given its cutting-edge design and top-notch build quality. 

Noise Rating

The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

(Image credit: Tom's Hardware)

The average noise output is low.

Efficiency Rating

The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.

(Image credit: Tom's Hardware)

Average efficiency is high enough, but there is room for improvement. 

Power Factor Rating

The following graphs show the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius and 115V/230V voltage input. 

Image 1 of 2
Corsair HX1000i
(Image credit: Tom's Hardware)

The APFC converter does a great job!

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Aris Mpitziopoulos
Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

3 Comments Comment from the forums
  • Co BIY
    Another nicely done review. Seems lots of people will need a 1000 Watt supply now.

    This is the first time I've heard about PCIe 5.0 having anything to do with the power supply ?

    Maybe in the next review you could explain this.
    Reply
  • jkflipflop98
    I picked up a 1kw cooler master PSU about 10 years ago or so. It's still going strong.
    Reply
  • escksu
    Co BIY said:
    Another nicely done review. Seems lots of people will need a 1000 Watt supply now.

    This is the first time I've heard about PCIe 5.0 having anything to do with the power supply ?

    Maybe in the next review you could explain this.

    Its not really about the PCIE 5.0 slot but the power connector for graphics card. New graphics cards are supposed to utilise the so-called "PCIE 5.0 16pin power connector" (again, nothing to do with PCIE 5.0 slot).

    Eg. the RTX4090 uses PCIE 5.0 16 pin power connector but its actually a PCIE 4.0 16x card.

    You do not need any special PSU in order to utlise the PCIE 5.0 slot on your board. Currently there are no PCIE 5.0 devices other than SSD.
    Reply