The i Series is the latest line of power supplies from Cooler Master. These power supplies operate on a single +12V rail, allowing the system to power any number of power hungry components. This is achieved through the "inclusion of higher quality components and process improvements that allow for high efficiency of 85% or more." The additional inclusion of high durability capacitors and other over power protections ensure that the i Series will keep your system running strong for years to come.
Source: Cooler Master