Intel's Core i3-40005U Haswell Intel's Core i3-40005U processor based on the Haswell microarchitecture fits nicely in the chip maker's economy line of chips. The chip won't break any benchmark ...
See Core M. The original microarchitecture of the Core i series was code-named Nehalem. Subsequent microarchitectures were Sandy Bridge, Ivy Bridge, Haswell, etc. (see Intel microarchitectures).