RX480 - Bottleneck or not?

[Usb3QwZ]

Hey guys!
I have a "gaming" PC that's not too great, but gets the job done on
the games that I enjoy playing.

Here are the specs!:

AMD A6-6400K @ 3.9GHz
10gb RAM
Windows 10
500w PSU

I have the stock AMD cooler... not sure if that is need information though.

Since the rx480 is coming out in a few days, I think its a great time to go for an upgrade.

I'm wondering, as in the title, if the 480 will get bottlenecked on my system, and if so; How better of performance can I still get?

Also, if it comes down to not being a great choice with the APU I have currently, what would be a Good FM2+/FM2 cpu to upgrade to along with the 480?

Thanks for all the help in advanced!

 

[CountMike]

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Athlon%20X4%20870K.html is best you can ask for for your MB and should not be bad match for that GPU.