1. The Athlon had an advanced micro-architecture geared towards overall performance, with a notably powerful FPU.

2. Moreover complexity of these floating Computations increases in every stage of technological developments, which insists a separate hardware unit for its Computations, thus resulted in invention of floating point unit (FPU).

3. Math Coprocessors (Floating-Point Units) This section covers the floating-point unit (FPU) contained in the processor, which was formerly a separate external math coprocessor in the 386 and older chips