libcpuid

Small x86 CPU identification library

libcpuid is a small C library for x86 CPU detection and feature extraction. Using it, you can: - Get the processor vendor, model, brand string, code name, etc. - Get information about CPU features such as: number of cores or logical CPUs, cache sizes, CPU clock, etc. - Check if the processor implements a specific instruction set such as SSE2 or 3DNow! - Execute the CPUID and RDTSC instructions in a portable way - And have this all in your commercial application, without getting into trouble, due to permissive license Reference utility (rather advanced and useful on its own) is also provided.