2 cores or 4???

Question

linux

There are two operating systems: Win7 and Linux (Kali). Both are installed "physically" on the disk (not virtually). The laptop is 2-nuclear ... and recently in Linux (GNU Linux ...) I looked at the characteristics:
ps . in the summer I changed the motherboard ... and maybe they slipped me a 4-core core?))) Why does Linux (GNU Linux ...) show 4 processors, and in Windows 2 ??

Answer 1

hyperthreading
ark.intel.com/ru/products/43529/Intel-Core-i3-350M...