Clawhammer is/was the codename for the first 64-bit AMD
processor. Clawhammer will (was to be?) be aimed at the desktop
and low-end server market, while the more powerful sledgehammer
will target the high-end SMP
server market. The first clawhammers were expected to hit the market in the first quarter of 2002
, however, nothing resembling clawhammer has shipped yet (as of March, 2003). As far as I can tell, the "clawhammer" and "sledgehammer" codenames have been dropped by AMD, as no articles published since early 2002 mention them.
See also: Sledgehammer