Because of its 32-bit addressing power, the OS/2 2.0 operating system requires a computer that has a system unit equipped with an Intel (or compatible) 80386 (or higher) microprocessor. The 80386SX microprocessor provides adequate performance for those who work in lower-demand application environments. In most environments that demand multiple concurrent processes, the 80386DX will be adequate for satisfactory performance. For computers that will be used as network servers, consider the 80486 series. Also consider the 80486 series for those who expect to switch frequently and rapidly among a large number of concurrent tasks. See Appendix A, "Supported Hardware" for a list of IBM systems that fulfill this processor requirement and for some information about the compatibility of personal computer equipment from other manufacturers.