“Nehalem” is the architecture behind the new Intel processors. As new Mac Desktops and Mini’s hit the news we will hear the term more and more. It’s a quad-core 64-bit processor with very interesting features. One of them is it reintroduces Hyper-Threading (aka SMT), which had been retired when quad-core chips were inicially introduced.
Mac Pro Gets Nehalem Xeons, New Architecture, Graphics
http://i.gizmodo.com/5163387/mac-pro-gets-nehalem-xeons-new-architecture-graphics
‘Nehalem’ Xeon chips in Apple Mac Pro gives a peek at next-gen Windows workstations
http://www.digitalartsonline.co.uk/news/index.cfm?NewsID=12257