This chip-enhancement technology (actually, a set of 57 instructions designed to enhance multimedia performance) has become standard on the Pentium II and its competitors, but the apps that take full advantage of MMX capabilities are, so far, few and far between, while graphics technology has galloped past it. MMX has been challenged by AMD's 3D Now! technology, and superseded on the cutting edge by Intel's Katmai/KNI instruction set, formerly known as MMX2 and the centerpiece of the Pentium III chip. And of course, new 3D technology, first appearing in DirectX 6.0, is coming our way as well, which will probably render MMX (and possibly 3D Now!) totally obsolete. So much for the cutting edge. Why even keep this page posted here? Well, you were curious, weren't you?