"Carbon nanotubes are a form of carbon, graphene, known as an allotrope, that is made in sheets one or two atoms thick and then rolled into wire-like tubes which are just nanometers in diameter. This material has better thermal conduction characteristics than copper, the usual heatsink material. As compared to copper, graphene conducts more heat away from a source object in the same temperature environment.
Curiously, the nanotube material only conducts heat in one direction, along the axis of the tube, unlike copper. But this does not matter in a CPU cooling application.
OCZ gained the technology through its acquisition of PC Power & Cooling in May. Pricing and availability information about the HydroJet is not yet available."