I want to upgrade my PC but not for more than 300 $ this includes reselling my old parts. My current build is an Intel i5 -4460 3.2 GHz, Powercolor Turbo Duo radeon r9 285, 8 g of ram and no separate cpu fan. i think my pc overheats an hour into gaming. Should I focus on upgrading my videocard or slightly uprading all of them. Another question is I got a cheap motherboard, would a better motherboard get the most out of everything else?