How much better will my pc preform while gaming when I upgrade my fx 8320 to an intel i5 7640x

[malphe2012]

I already have A gtx 1080 but in some games i get around 40 fps which feels way to low how big of a difference will it be getting a new cpu and also going from ddr3 ram to ddr4 2400 speed ram?

 

[yeti_yeti]

There is absolutely no reason to go with the i5 7640x, you will end up paying more for the motherboard than for the actual chip. Get an i5 8400 or an i3 8350k, they are both really good and you will definitely notice a difference in games.