Home / Tech News / Featured Tech News / Corsair RM1000x Shift (2025) PSU Review

Corsair RM1000x Shift (2025) PSU Review

The Corsair RM1000x Shift is a very welcome refresh in the RMx range of power supplies. It supports the latest ATX 3.1 and PCIe 5.1 platforms and we like the new side mounted connectors which will aid people during the install process and for updating their systems later.

This time Corsair are working with Great Wall rather than CWT, based around an internal design from Corsair. Ripple suppression from this unit is excellent and it scores highly overall in the grand scheme of things.

Efficiency is also stellar with our sample hitting around 94%, and we would rate it closer to Platinum than Gold to be honest.

I asked Corsair about this and they said ‘We want the rating we market to be applicable to 100% of all sold units. For a product that is on the border of two certifications, we will choose the lower certification as our marketing spec, so we ensure all units meet it. So for example if we test 100 RM1000x Shift PSUs, we might pass platinum on 70 of them and gold on 30. To us, that's a gold certified PSU.'

As I said in our last review for Corsair, this new NR140HP fan is one of the best we have tested in recent years. The fan remains quiet at all times, it just becomes audible after the load reaches 850 watts or so.

The power supply adopts high-grade Japanese capacitors from Nichicon and Rubycon which is always good to see. Build quality is extremely high quality across the PCB and, like the HX1500i Shift, the component selection doesn't cut corners.

This power supply is actually reasonably priced, too – especially considering I really feel that Corsair could have classified it as Platinum rated, not Gold! RRP is said to be £179.99 (UK), 204.90 euros and $209.99 (US).

Pros:

  • Achieves Platinum efficiency in our tests.
  • Fully modular.
  • Fan noise is stellar at all speeds.
  • 10-year warranty.
  • High quality cables.
  • Cybenetics certified A+ and Gold (230V).
  • Tight load regulation.
  • Unique side-mounted cable connectors.

Cons:

  • A lot of competition in this sector.

KitGuru says: Another great power supply from Corsair targeting a slightly more cost effective market than the HXi units. At £179.99 it remains competitively priced while delivering high quality power and remaining quiet.

Become a Patron!

Rating: 9.0.

Check Also

Bandai Namco confirms PC system requirements for Code Vein 2

Bandai Namco has released the PC system requirements for the upcoming anime-styled action RPG, Code …