AMD’s Radeon HD 5000-series cards are already considerably more power efficient than anything in Nvidia’s Fermi lineup, but PowerColor’s Go Green series of cards are engineered to consume even less electrical power than reference design-cards. This passively cooled Radeon HD 5750 (PowerColor part number AX5750 1GBD5-NS3DH, to be precise) draws all the power it needs from the PCI Express bus, so it doesn’t require a dedicated six-pin power cable. No fan means no noise.
