The FX 6300 isn't really new, it came out in 2012, and has rather poor single core performance, AMD chose to sacrifice that aspect as part of the 2011 Bulldozer design in order to push higher clock rates and cram more cores onto the CPU with the hope that developers would adapt their software to be more multithreaded in the future. 2012's Piledriver improved single threaded performance somewhat, but AMD's single core performance is way behind Intel's and has been for the past 5 years. For games like Assassin's Creed 3, which heavily rely on one CPU core, that leads to poor performance. In single threaded applications, your FX 6300 isn't that much faster than your old Athlon II. Fortunately most newer titles aren't coded that way, and the FX 6300 will put in a more respectable showing in newer games, though still will get outperformed by similarly priced Intel CPUs.