In computing, Streaming SIMD Extensions (SSE) is a single instruction, multiple
data (SIMD) instruction set extension to the x86 architecture, designed by Intel
and introduced in 1999 in their Pentium III series of Central processing units (
CPUs) shortly after the appearance of Advanced Micro Devices (AMD's) 3DNow!
SSE4 (Streaming SIMD Extensions 4) is a SIMD CPU instruction set used in the
Intel Core microarchitecture and AMD K10 (K8L). It was ... Intel later introduced
similar speed improvements to unaligned SSE in their Nehalem processors, but
did not introduce misaligned access by non-load SSE instructions until AVX.
SSE3, Streaming SIMD Extensions 3, also known by its Intel code name Prescott
New Instructions (PNI), is the third iteration of the SSE instruction set for the IA-32
(x86) architecture. Intel introduced SSE3 in early 2004 with the Prescott revision
of their Pentium 4 CPU.
What is SSE and AVX? History. In recent years, CPUs have reached some
physical and power limitations, so CPU speeds have not increased noticeably, in
terms of Ghz. As computation requirements continue increasing, CPU designers
(Streaming SIMD Extensions) A set of registers and instructions added to Intel
CPU chips to improve multimedia performance, ... Eight more registers were
added for 64-bit CPUs and additional instructions have been added in
subsequent SSE ...