The marketing department was at Intel and not Apple according to this blurb at WIkipedia I guess:
Hyper-threading (officially Hyper-Threading Technology, and abbreviated HT Technology, HTT or HT) is Intel's term for its simultaneous multithreading implementation in its Atom, Core i3, Core i5, Core i7, Itanium, Pentium 4 and Xeon CPUs.
Hyper-threading is an Intel-proprietary technology used to improve parallelization of computations (doing multiple tasks at once) performed on PC microprocessors. For each processor core that is physically present, the operating system addresses two virtual processors, and shares the workload between them when possible. Hyper-threading requires not only that the operating system support multiple processors, but also that it be specifically optimised for HTT, and Intel recommends disabling HTT when using operating systems that have not been so optimized.
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Intel released the Nehalem (Core i7) in November 2008 in which hyper-threading makes a return. The first generation Nehalem contains 4 cores and effectively scales 8 threads. Since then, both 2- and 6-core models have been released, scaling 4 and 12 threads respectively.[3]
The Intel Atom is an in-order processor with hyper-threading, for low power mobile PCs and low-price desktop PCs.
http://en.wikipedia.org/wiki/Hyper-threading
