Hyper-Threading is a technology included by Intel first in their Netburst line of parts. Hyper-Threaded processors present their individual processing cores to the system as if they are two processing cores. To use Intel’s parlance, that means that each physical core appears in the operating system as two logical cores. While the OS can distinguish between a system that has two logical cores (i.e. a single physical core with Hyper-Threading enabled) and two physical cores, applications cannot. It is up the the OS’s scheduler to choose if it wishes to use logical cores in the same manner as physical cores