im building a gaming pc and i want to know if my build is good and wont bottle neck. processor. amd fx 4100 motherboard. Gigabyte ga-970 ud3 am3 graphics card. sapphire radeon hd 6850 ram. G.skill ripjaws 4gb hdd. western digital wd re4 500gb case. haf 912 psu. antec bp 550 plus moudular psu i dont want to go over 800 dollares it also inclundes windows and i dont plan to overclock yet.