A single chip with four distinct processors that work simultaneously. For example, Intel introduced its first x86-based quad-core CPUs in late 2006 (see Core 2), and AMD introduced its first x86 quad-core chips in 2007 (see Opteron). See multicore.
"quad core." YourDictionary, n.d. Web. 16 August 2018. <http://www.yourdictionary.com/quad-core>.
quad core. (n.d.). Retrieved August 16th, 2018, from http://www.yourdictionary.com/quad-core