Intel Core is the name of a family of 32-bit dual-core microprocessors. It was made by the technology company Intel. Intel Core processors are based on Pentium M technology. Those processors are more advanced than Intel P6 processors. This architecture, or way to build a processor, is now replaced by Core 2 microarchitecture. In the Core family, there are two groups: the Duo (with two cores) and Solo (Duo with one disabled core). The Solo line replaced the Pentium M one-core processor.
In September of 2006 and January of 2008, Core CPUs stopped selling as much, as Intel released CPUs with newer technology.[1][2]