Since LAPACK95 is an interface to LAPACK, its efficiency is closely related to that of LAPACK. LAPACK is designed to give high efficiency on vector processors, high-performance ``super-scalar'' workstations, and shared memory multiprocessors. It can also be used satisfactorily on all types of scalar machines (PC's, workstations, mainframes). Section 4.1.2 gives some examples of the performance achieved by LAPACK with the LAPACK95 interface routines.