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2 * 4 physical cores * 2 = 16 logical cores. I'm not sure if we can call this logical CPU. But Hyper Threading is vendor specific and hence out of GATE scope. 

https://en.wikipedia.org/wiki/Hyper-threading 


Hyper Threading is Intel implementation of Simultaneous Multi-Threading (SMP). SMP means the CPU executes instructions from 2 different threads on the same physical core. For the OS, this appears as 2 different logical cores and this enables to have better pipeline efficiency in hardware.

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