What Actually Is SSE?

[Grant64]

OK well I was wondering if someone could give me a technical definition of what SSE actually is! And what it does.
Just A Thought!

Cheers - Grant64

[Stezo2k]

SSE stands for single SIMD extensions, what it basically is is several CPU intstructions that improve 3d graphics performence and calculations of a CPU, it was first introduced with the Pentium III, so i recon Intel possibly invented it.