I hate the Intel nomenclature break on mobile vs desktop. On desktops, Celeron is dual core, i3 is dual core with hyperthreading, i5 is quad core, and i7 is quad core with hyperthreading. On the other front, they mix random clock values and core counts across skews so you never know if your i7 is a quad core with hyperthreading (4750Q for example) or a low power dual core (4700U) because there the suffixes on the parts number dictate core counts and such.