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Power Specifications The minor rails boast an impressive 150W of maximum combined power, while the +12V rail can deliver up to 100A if needed, handling the PSU's full power on its own. Lastly, the 5VSB rail is also quite strong with 17.5W capacity. We like to see 1kW+ PSUs with beefy 5VSB circuits. In the multi-+12V rail mode, there are eight +12V rails with 40A maximum current output each. All of the rails combined can deliver the same wattage (1200W) in single-rail mode, of course. Cables & Connectors There are two EPS connectors along with eight PCIe ones, all available at the same time. The number of SATA connectors is huge, while the eight four-pin Molex connectors should cover every need. Some miners would probably ask for 10 or 12 PCIe connectors, but Corsair obviously didn't have a cryptocurrency boom in mind when the HX1200 was being designed. Power Distribution As mentioned, there is a switch that lets you choose between one +12V rail or multiple ones. In the HXi models, this is achieved using the Corsair Link software. However, since the HX models don't have a digital interface, a different approach had to be used. The +12V rails can deliver up to 40A each if the multi-rail mode is selected. According to Corsair, each individual connector in this PSU has over-current protection, so no more than 40A goes through any given cable. Read More