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Corsair RM1000e ATX v3.1 (2025) PSU Review

The Corsair RM1000e ATX V3.1 has delivered technically solid results in our testing over the last week and it has always remained stable. Externally the RM1000e is nicely finished, relatively compact for the capacity and is fully modular, to suit a wide variety of system builds.

The latest RM1000e would be a viable partner for a new RTX50 series graphics card. Technically it delivers high performant load regulation across the range of output and it coped well with the cross load test. Fan noise is well controlled and is really only audible above 700 watts or so. Even if a new RTX5090 demands 550 watts under load, this unit will be up to the task. As this is a lower cost unit compared to Corsair flagship models, the fan has been swapped out from a higher grade fluid dynamic bearing fan, to a rifle bearing fan. Same with the primary capacitor – its Taiwanese, not Japanese.

Ripple suppression, while not class leading, falls well within industry rated safety parameters and the internal design adopts various daughterboards to reduce the need for space. Soldering quality is top level and the parts inside are high quality. We also appreciate both the external and internal build quality throughout.

While Corsair have priced this product at £160 (in literature they sent us), you can find them available online for around the £150 mark inc vat. Even their own website shows them now at £152. There is no doubt there is a lot of competition in the market at the £150 price point, but this is a very good power supply so it deserves to sell well.

Pros:

  • Great load regulation.
  • Rifle bearing fan is relatively quiet for most of the load demand.
  • Soldering quality is high.
  • efficiency is good.
  • cable quality is great.
  • fully modular.

Cons:

  • Fluid dynamic bearing fan option would be nice.
  • Taiwanese Teapo primary cap.
  • 7 year warranty could be a little better.

Kitguru says: The RM1000e is a very high quality, efficient power supply at a fairly reasonable price point of £150. It was able to deliver 1000w sustained for a long period of time. Build quality and component selection are great and it comes highly recommended.

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Rating: 8.0.

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