The Free On-line Dictionary of Computing (30 December 2018):

Alpha AXP 21164

    A 1 GIPS version of the DEC Alpha processor.
   The first commercially available sequential 1 GIPS processor.
   Announced 1994-09-7.

   (http://digital.com/info/semiconductor/dsc-21164.html).

   (1995-05-10)