32-bit Compatibility Mode

32-bit Compatibility Mode

An operational mode in Intel 64 and AMD64 CPUs that enables 32-bit applications to each use up to 4GB of RAM. Contrast with 32-bit Legacy Mode, in which all 32-bit apps share the same 4GB. See 32-bit computing.
References in periodicals archive ?
Intel 64-bit CPUs have a 32-bit compatibility mode. While 32-bit applications will run on 64-bit processors, compiling with a 64-bit optimizing compiler allows them to take advantage of the architectural benefits of a 64-bit environment.
You can run 32-bit applications workstations in Itanium's 32-bit compatibility mode, but that slows performance.