The processors of the Core microarchitecture can be categorized by number of cores, cache size, and socket; each combination of these has a unique code name and product code that is used across a number of brands. For instance, code name "Allendale" with product code 80557...
Just a bit a bit of information:
Skylake = 80662
Haswell = 80646
Ivy Bridge = 80637
Sandy Bridge = 80623