All the Athlon's above a 750K will overclock about the same and you wont notice a difference in performance, the issue is the entire line just isn't that strong. They struggle with current AAA titles @ 1080p unless you reduce the settings, now that is paired with a stronger GPU like a 1050Ti. GTA 5 and other games that are heavy Multiplayer will really tax these CPU's.
If I was to build something new on a budget I would look at a Ryzen 3 1300x "$99", i3 7100 "$99", Athlon 950 "$60", G4560 "$70" and at least a 1050GT or Rx 460 then you have upgrade potential and a CPU that is stronger than the entire FM2 line in gaming.
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