Hello All. I have an MSI 990FXA-GD65 motherboard for my AMD FX 8320 proc. I need to upgrade my current 6 GB RAM to 8 or possibly 16 GB. I'm planning to buy an entirely new set with a budget of $70-85, for which I need your help. My budget is approx. $70-85. Sp please help me decide. DDR3 support on the mobo is till 2133 MHz (32 GB).