Who needs Platinum-rated supplies, anyway? Corsair continues to revamp its range of power supplies in 2015. Incremental improvements to long-standing ranges make each series that little bit better. The HXi is a case in point, which is now very close in specification to the range-topping AXi released a while back.

This year-on-year improvement is also in evidence for Corsair's latest premium supply. The RM series was launched about two years ago, focussing on low-noise operation, but is now superceded by the RMi that arrives with a handful of improvements over an already-decent design.

Interestingly, looking at Corsair's website shows that RMi will co-exist with regular RM for a while yet. Outfitted with a new livery, 650W, 750W, 850W and 1,000W models are now becoming available, and we take a look at the 850W variant today.