High Quality Content by WIKIPEDIA articles! SSE4 (Streaming SIMD Extension 4) is a CPU instruction set used in the Intel Core microarchitecture and AMD K10 (K8L). It was announced on 27 September 2006 at the Fall 2006 Intel Developer Forum, with vague details in a white paper; more precise details of 47 instructions became available at the Spring 2007 Intel Developer Forum in Beijing, in the presentation. The SSE4 Programming Reference is available from Intel.