New computer at home has the 4600+ dual core AMD. Did some anecdotal testing ( ship in a bottle ), along with actual SW use ( testing 2007 ). Manual setting processor affinity to single core is ~ 30% faster than with dual core. There may be perforance gains in drawings/assemblies and such, but in a single part environment, which is where 90+% of my time is spent, single core seems to be faster.
Is there a way to set SW or windows to always run SW in single core? Manually setting core affinity is only good as long as the process is running. Once shut down and restarted, it auto-reverts to dual core. Trying to remember to always set core affinity is a pain.