I think you should keep it too. I have the FX-6300 as well and it still keeps up in games.
It looks great and I would buy one but it's over-priced.
My friend has the following rig:
M5A99FX PRO R2.0
2x4 8GB 1866MHz Corsair Vengeance CL9
ASUS GTX 660 2 2GB O.C.
Corsair 750WTM +...
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