With AMD on the verge of releasing their first six core desktop processors, codenamed Thuban, the company has confirmed Keep in mind these chips will remain within the same power envelope as current Phenom II X4 parts, despite having two extra cores and still being manufactured on a 45nm process. AMD's new Phenom II X6 and forthcoming quad core CPUs based on the new Thuban design won't require new motherboards, as they'll be compatible with existing AM3 and AM2+ sockets via a BIOS update, though it isn't clear if Turbo Core will be limited to newer AM3 boards.