If you're buying a R7 260X (which is enough for current games at 30+fps, and 60fps if you tweak settings), you don't need a A8 6600K, you can just buy an Athlon X4 860K.
ye I already have a pre build pc I bought so I just wanted 2 add a graphics card, and if I were to buy msi r7 265 would that be better or should I stick with r7 260x