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.
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.
Corsair RMx Series RM1000x 1000W Power Supply
80 PLUS GOLD Certified
+3.3V@25A, +5V@25A, +12V@83.3A, -12V@0.8A, +5VSB@3ABuy Now from Amazon