Corsair HX1000i Power Supply Review

With the upcoming next generation Processors and Graphics cards, power demand of PC will be going to upscale. To counter this need, Corsair releases a new power supply unit the HX1000i, From the CORSAIR’s HXi Series, the HX1000i is a Fully Modular Ultra-Low Noise Power Supplies with three EPS12V connectors use the highest quality components to deliver 80 PLUS Platinum efficient power, needed to power today’s most demanding PC upgrades.

Now let’s see what this Corsair HX1000i PSU has for us.


With three EPS12V connectors and fully modular cabling, HXi Series platinum power supplies have every connection needed to power today’s most demanding PC upgrades now and into the future, including the latest generation of power-hungry graphics cards and processors.

HXi Series PSUs combine a 140mm fluid dynamic bearing fan with Zero RPM mode support for long-lasting fan performance and near-silent operation when the fan switches off at low and medium loads – only spinning as fast as it needs to.

80 PLUS Platinum certified with premium 100% Japanese 105°C electrolytic capacitors, HXi PSUs ensure up to 92% efficiency for exceptional power delivery and long-term reliability with low power consumption, less noise, and cooler temperatures.

As a fully digital power supply, each HXi Series PSU provides clean, consistent power while minimizing coil whine and noise for stable and quiet operation.
Supporting Modern Standby sleep mode, the HXi Series takes low-load efficiency to the next level with quiet operation and extremely fast wake-from-sleep times.

With CORSAIR iCUE Software, you can monitor your power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop.

Our award-winning service means you can enjoy your gear worry-free.



Corsair HX1000i comes in a securely packaged yellow / black coloured box with PSU graphics, Model name and features highlights on front and the back of the box.

Inside the box

Outer box contains HX1000i PSU within a bag and a cardboard box includes Module cables, Power cable, cable-ties, Corsair interface cable, and User manual


HX1000i PSU has new design with triangular air vents and sturdy outer metal case.


Corsair HX1000i power supply board is build with the best quality components and uses all Japanese quality capacitors.

Corsair are uses their NR140P fan (140 mm, 12 V, 0.22 A) inside the power supply. According to Corsair, the fan blades are properly balanced to help reduce resonance at higher speeds. This is a fluid dynamic bearing fan which helps in prolong life and reduce noise.


Test system configuration -

CPUIntel i9-9900K
RAM2 X 8GB Corsair DDR4 3000Mhz
SSDCorsair Force GT 240GB SSD
GFX ASUS GeForce RTX3080 TUF Gaming OC
PSU Corsair HX1000i
Case Corsair iCUE 4000X Case
DisplayASUS PB287Q
OS Windows 10

The Corsair HX1000i power supply handled above gaming setup very comfortably, with RTX 3080 and i9-9900K maxed stable overclocked.

PSU was connected to another Corsair iCUE 5000T RGB test rig via provided USB Type-C internal header cable. CORSAIR iCUE software detected the PSU and provided detailed info about power on different voltage rails, efficiency on fly, as well as offered to customize PSU cooling by setting Fan curve as per your need. Very nice and easy interface.

Custom made DC Active dummy load PSU tester.

Unfortunately my PSU sample had some modular DC Cables issue. After contacting Corsair about this, they confirm that it is an isolated sample issue only and provided me a new set of DC Cables for review, which worked fine.

Load Test

To test the PSU on my Active load test, I have manually increased the load in Amps on 12v first rail, 12v second rail, 5v and 3.3v rail to simulate 100%, 80% 50% and 20% load. Since this PSU is having only single 12v rail, so divided the load in half on both 12v loads on my tester.

5V stand-by and -12V supply was left at a constant 0.5amp load throughout the test run.

Maximum theoretical load handling capacity of my tester is somewhat around 1500W, but due to MOSFETs safe operating area (SOA) characteristics and thermal load handling capacity of the heatsinks, this tester can handle Max 1300W.. For safety reasons I have also installed a thermal controller which turn OFF the attached PSU if temperature exceeds SOA specifications.

During test the PSU ran smoothly close to 1095W of load, when tried to pull more the PSU turned itself OFF showing the proper working of Overload protection .


  • High build quality
  • Fully Modular
  • 80 PLUS Platinum certified
  • Low noise fan
  • 10 years warranty
  • CORSAIR iCUE software support


  • Nil


Corsair HX1000i PSU in our test showed good voltage stability and 80 PLUS Platinum efficiency. PSU fan was idle at low and modest load, and was silent under full load too. The protection circuit OCP worked perfect and PSU turned itself off when tried to pull over around 1095 watts.

With CORSAIR iCUE software integration, the Corsair HX1000i PSU provided detailed info about power on different voltage rails, efficiency on fly. With this one can also customize PSU cooling by setting Fan curve as per their need.

Finally the New Corsair HX1000i PSU is one of the best performance unit with 80 PLUS Platinum efficiency in our testing and is worthy of our PC TeK Reviews EXCELLENCE Award.

Manufacturers Info

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