We would like to thank Corsair for supplying the review sample.
As of right now, Corsair and EVGA are the most active companies when it comes to PSUs. Both companies regularly release new PSU lines to add to their already complete portfolio of PSU products. Corsair's latest releases are the RMx PSUs, which are digitally stripped down RMi units that cost less. The new RMx line also features a 550 W unit, a capacity the RMi line does not include. The RMx family consists of five members with capacities ranging from 550 W to 1000 W, all of them fully modular and 80 PLUS Gold certified. Corsair apparently thinks that not all users are fond of monitoring their PSU through software, which has them offer a basic version of the high-end RMi platform for those who simply want to install their PSU to forget about it afterward.
Since these units are very similar to the RMi units internally, we expect them to perform just as well, reliability included, which Corsair's seven year warranty reflects. Today's review subject will be the strongest RMx unit with a capacity of 1 kW. This PSU can easily support a high-end gaming system with multiple VGAs installed because of its many connectors. Featuring a very quiet operation at light and moderate loads because of a semi-passive operation and a slow fan, RMx PSUs also won't bother most users audibly. The RM line has always been considered among the top when it comes to operating silently, and the new RMi and RMx units are definitely no exception. You see, the days where users only cared for a PSU's performance are long past, and most now also care about how noisy their PSU is while performing well. Combining those two features is tricky with high-capacity PSUs, especially at higher loads. However, combine a highly efficient platform with an appropriate fan and good fan profile and you might just have a silent high-capacity PSU.
The following table is provided by Corsair and highlights the differences between the RM, RMx, and RMi lines.