tired iron

from Jargon File (4.4.4, 14 Aug 2003)

tired iron
 n.

   [IBM] Hardware that is perfectly functional but far enough behind the
   state of the art to have been superseded by new products, presumably
   with sufficient improvement in bang-per-buck that the old stuff is
   starting to look a bit like a {dinosaur}.

from The Free On-line Dictionary of Computing (8 July 2008)

tired iron

   [IBM] Hardware that is perfectly functional but far enough
   behind the state of the art to have been superseded by new
   products, presumably with sufficient improvement in
   bang-per-buck that the old stuff is starting to look a bit
   like a {dinosaur}.

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