You need a multiplier of 3 to run Tripple channel ram, which your CPU and mobo support, so doing a multiplier of 2 or 4, you'll be running in Dual Channel, which is slower. Thus 6GB(2gb x 3), or 12GB(4gb x 3, or 2gb x 6) is recommended. If 6 is too little, get 12, because 8 is wasted potential in your system. A $100 budget…