So here is the question of the day is your "terrible performance" just that single threaded CPU test? or are you actually seeing performance problems. Looking at the results I would say that is 'as expected' you are comparing a v0 2.0 GHz proc from 2012 for a 3.4Ghz proc from 2014 and single threaded won't show the benefit of the additional cores on the older E5-2620.