CPUID
In the x86 architecture, the CPUID instruction (identified by a CPUID opcode) is a processor supplementary instruction (its name derived from CPU Identification) allowing software to discover details of the processor. It was introduced by Intel in 1993 with the launch of the Pentium and SL-enhanced 486 processors.A program can use the CPUID to determine processor type and whether features such as MMX/SSE are implemented.
CPUID - Wikipedia Jump to content From Wikipedia, the free encyclopedia Instruction for x86 microprocessors Not to be confused with the unrelated software company CPUID, developer of CPU-Z . This article may be too technical for most readers to understand . Please help improve it to make it understandable to non-experts , without removing the technical details. ( January 2025 ) ( Learn how and when to remove this message ) In the x86 architecture, the CPUID instruction (identified by a CPUID opcode ) is a processor supplementary instruction (its name derived from " CPU Identification") allowin
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