Some microprocessors, such as the Intel 80486 and Pentium, have a built-in FPU. With other microprocessors, you can usually add an FPU by inserting the FPU chip on the motherboard.

Floating-point units are also called numeric coprocessors , math coprocessors , and floating-point processors .

Microprocessor Comparison Chart
A cut-to-the-chase guide that compares and contrasts popular processing chips.