Hello I am thinking of upgrading my current PC but I can not decide what is a better up grade for my build. I am looking to either grade my CPU (and motherboard) or upgrading my graphics card to a R9 390 or a GTX 970. The current CPU I am using is a AMD FX 6300 overclocked to 4.2 GHZ. The current graphics card I am using is a Sapphire R9 280. There will be a PC PartPicker link of my build in the description and a Imgur link. Also I use my PC primarily for gaming. I will appreciate all suggestions, thanks.
PCPartPicker link: http://pcpartpicker.com/user/surferguy99/saved/#view=f9qtt6
Imgur Link:https://imgur.com/gallery/z2yzpe2