Technology from Intel.
The SSE2 instruction set enhances the SIMD instructions previously delivered with MMX technology and SSE technology. These new instructions support 128-bit SIMD integer operations and 128-bit SIMD double-precision floating-point operations. By doubling the amount of data on which a given instruction can operate, only half the number of instructions in a code loop need to be executed.
SSE2 capable CPU
Pentium 4