Sapphire first introduced its graphics cards which implemented the Vapor-X coolers back in 2007 with its 3870 Atomic cards. The Vapor-X technology meant that graphics cards could be efficiently cooled and still remain silent using a liquid coolant which vaporised at the hot GPU's IHS. Recently Sapphire has revitalised their Vapor-X video cards with the birth of the HD 4850 and 4870. Today we've kindly been given the 4850 to review, let's see how it performs.