Source : Free On-Line Dictionary of Computing

VAX MIPS
     
         (Or VAX Unit of Performance, VUP) The processing
        power normally attributed to a {Digital Equipment Corporation}
        {VAX} 11/780.  Future VAX systems were rated according to this
        scale (e.g. VAX 8350's being 2.7 VUPs per CPU).  A {MicroVAX}
        II is normally associated with 0.9 VUPs and at a later time
        the MicroVUP was coined to rate VAX {workstations}.  The use
        of the VUP by Digital Equipment Corporation has been replaced
        with more standard benchmarks ({SPECint} and {SPECfp}) in the
        {DEC Alpha} processor systems.
     
        (1996-08-22)