Haven't really put much thought into CPUs lately, but had this come up and I'm disappointed my Google-fu did not find a good answer I remember hyper-threading, where a core was 'pseudo-divided' into ...

For most of the past decade, Intel has followed a fairly steady set of rules when speccing out its Core i3, i5, and i7 processors. Until last year, Core i3 chips were dual-cores with Hyper-Threading ...