Anandtech reviewed the Corsair RM850x (2018) PSU
A quote from the article:
Corsair may today be one of the largest companies in the PC market, offering literally hundreds of products, but that was not always the case. The company started off as a manufacturer of memory-related computer products and took them many years to even consider diversifying into other segments of the market. Their first significant diversification attempt away from RAM-related products was towards the power supply unit (PSU) market, with the company initially releasing just a couple of PSUs. That move was a great success for the company and the beginning of Corsair's expansion towards multiple segments of the PC market.Corsair RM850x (2018) PSU Review
Although the company today produces hundreds of products, they still place a significant amount of attention on their power supply products, with Corsair having not only one of the largest selection of products but excellent reputation in the field as well. The company today markets dozens of PSUs through nine different product series. In today's review, we are testing a unit of their most popular series, the RMx.