Source : Free On-Line Dictionary of Computing

machoflops
     
        /mach'oh-flops/ A pun on "{megaflops}" referring to the
        inflated performance figures often quoted by computer
        manufacturers.  Real {application program}s are lucky to get
        half the quoted speed.
     
        See {Your mileage may vary}, {benchmark}.
     
        [{Jargon File}]
     
        (1995-02-15)