the 32-bit Core Duo CPU was also the first x86 chip used in the Mac, as Apple transitioned from PowerPC to x86 (see MacBook Pro). Note that Core Duo and Core 2 Duo chips are not the same (see ...
A CPU chip that contains two distinct processing units that work in parallel. IBM introduced dual core Power 4 CPUs in 2000, followed by Sun and HP in 2004 and x86-based Pentiums in 2005.