Corsair HX1000i Modular Power Supply Review

by - 8 years ago



Noise and Ripple can easily be measured by an oscilloscope. These show how much voltage fluctuation there is on a particular rail. We tested the rail stability of the 3.3 volt, 5 volt and 12 volt rails using an identical time and millivolt scale for all graphs. millivolt ripple is measured by the peak to peak size of the voltage curve.


Sample Ripple Graph

The latest ATX 12 volt version 2.3 specifications state that ripple from peak to peak must be no higher than 50 millivolts for the 3.3 volt and 5 volt rails, while the 12 volt rail is allowed up to 120 millivolts peak to peak to stay within specifications. Millivolt figures are stated to the closest increment of 5 given their variability.

Load (%) 3.3V Ripple 5V Ripple 12V Ripple
20  6.4  3.8  12.2
40  7.6  5  13.4
60  8.2  6.4  14
80  10.2  8.5  16.6
100  13.1  10  18.8

Given how the RM1000 fared in ripple suppression, let’s just say it wasn’t the greatest, I expected the HX1000i to be fairly average. It wasn’t. CWT have done an amazing job of boosting the ripple suppression capabilities of this unit allowing it to rival top-class OEMs like Super Flower, Seasonic, Flextronics and Delta.

3.3 volt @ 100%


5 volt @ 100%


12 volt @ 100%


Article Index

  1. Introduction and Packaging
  2. A Closer Look - Exterior
  3. A Closer Look - Interior
  4. Test Procedure
  5. Efficiency, PFC and Voltage Regulation
  6. Ripple Testing
  7. OPP and Max Wattage
  8. Fan Speed
  9. Final Thoughts
  10. View All

Author Bio

2 Comments on Corsair HX1000i Modular Power Supply Review

  • Avatar Wayne says:

    A nice looking unit, as far as symmetrical rectangular black boxes go that is. That Corsair link connector has limited value but nice for people who are fascinated by gimmicky things, PSU’s are self contained after all.

  • Avatar nem says:

    hope soon can you make an review of this amazing PSU the ANDYSON TITANIUM N700 really would be se nice see the review in eteknix

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