Corsair RM1200x Shift Series PSU Review

Corsair are using one of their NR140P fans in this unit, rated at 12V, 0.22A. This is a fluid dynamic bearing (FDB) fan which is said to offer longevity with an optimised sound profile.

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It looks like Channel Well are the OEM partner for this design, as they are for the RMx (non-Shift) series of supplies. The PCB layout is obviously different, as the modular bay is side mounted, but it is a similar hardware component design overall.

The build quality is very good and there seems to be no cost cutting in regards to the quality of the components used throughout. It's unusual to see two different brands of capacitors in the primary stage, but they are both 105C Japanese caps from Nippon Chemi Con (KMR series) and Nichicon. Rated at 680uf and 560uF respectively, for a total of 1240uF. This unit is a full bridge topology design with the DC-DC converters generating the minor rails. It utilises an LLC resonant converter to drive improved efficiency levels.

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