PCI Express is the next revolution in graphics add-in card-interconnect standards. This specification, significantly increases bandwidth between the central processing unit (CPU) and graphics processing unit (GPU) by enabling a balanced distribution of bandwidth to those applications that require it the most. The PCI Express x16 Graphics 150W-ATX Specification provides additional electrical power for PCI Express graphics beyond that supported by the existing PCI Express x16 specifications. The new maximum power levels supported by this specification are 25W (low-profile card), 75W (standard size), and 150W.
A PCI Express x16 Graphics 150W-ATX add-in card can draw a maximum of 75W through the standard connector, as specified in PCI Express CEM 1.1. Up to 75W additional power is provided through a 6-pin wire-to-board connector. Therefore, the maximum total power that must be provided to a PCI Express x16 Graphics 150W-ATX add-in card is 150W.
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