What are Code-names?
CPU manufacturers use a code-name for a CPU during its development. Once the product is launched, it gets a formal name, which is the name of the current product family. Usually, a new codename points to improvements in the core, so even if all CPUs in the product family carry the same name, a knowledge of their code names can help identify internal differences. For example, Intel Core 2 Duo CPUs have different internal properties corresponding to different code-names.