In this system 2 Quad Nehalem's are used,normally the task manager would show
8 cores (4+4) but due to the SMT feature (some kind of new Hyper threading) it shows 16.

This means the system has 8 physical but 16 logical cores.

The Nehalem architecture will be released in two variations,Bloomfield (LGA1336)
and Lynnfield (LGA1160).