The Am5X86TM microprocessor is an addition to the AMD microprocessor product family. The new processor enhances system performance by raising the microprocessor operating frequency to the highest levels allowed by current manufacturing technology, while maintaining complete compatibility with the standard Am486 processor architecture and Microsoft Windows. The CPUs incorporate write-back cache, flexible clock control, and enhanced SMM. Table 1 shows available processors in the Am5X86 microprocessor family.