The 9xxx cpus require a 220w tdp motherboard, and there is nothing better about them then your 8370, they just use more power and more heat to overclock to the same level your 8370 could be.
To get better you will need to get out of AMD and go Intel.
This will require a new motherboard, new cpu, new memory if you buy the newest intel line (skylake), and when you change motherbaords you technically need to purchase a new Windows key. Some people have luck registering windows key to their Microsoft account and transferring it, but it is no guarantee.
For gaming build you should get an i5 and even a h110 or b150 board is fine if you do not want to overclock.
For video editing/rendering, 3d modeling, cad, or other CPU intensive task then you would need an i7 or Xeon to perform better then your current 8370.