SAS/STAT 12.3 is essentially
a maintenance release of SAS/STAT software that runs on SAS 9.4.
In addition, the procedures
that make up the SAS High-Performance Statistics product are available
with SAS/STAT for use in single-machine mode. Depending on data characteristics
and model complexity, you might see performance improvements over
comparable SAS/STAT functionality that is not multi-threaded. Also,
these procedures provide some new features; for example, the HPGENSELECT
procedure provides model selection for generalized linear models.