Slow loops on new iMac

Discussion created by RickWells-Cole on Aug 30, 2017
Latest reply on Sep 1, 2017 by Vincent_L

I have just purchased a brand new 3.4ghz Core i5 primarily to run some data processing loops that were slow on my 8 year old iMac.  The loops that used to take 24hrs now take around 14hrs, still slow... I tested the loops on a similarly specced i5 PC laptop and they took around 2 hours to complete ( 7 times quicker than on my new iMac. )  Does anyone have any idea why the iMac is so slow?