A computer system that is compatible with Intel's x86 CPU family. All operating systems and applications that run on Intel x86 systems (Core, Pentium, Xeon, etc.) run exactly the same on an x86-compatible computer. For example, AMD is a large supplier of x86-compatible CPUs.Sometimes, the term is used to refer to all x86-based computers whether from compatible vendors or from Intel. In such a case, the term should be "x86-based systems," not "x86-compatible." See x86, AMD and x86 chip platform.