Intel in one of the side notes from its Developer Forum presentations has outlined the Thunderbolt controllers that will drive computers based on Ivy Bridge processors. Cactus Ridge will mostly be a refresh of the Light Ridge and Eagle Ridge chips used in current Macs. As such, the high-end Cactus Ridge chip will have four channels that each have a symmetric 10Gbps and two DisplayPort links, while the budget version will have just two of those channels and one DisplayPort link.
