Poop_Noodles wrote

r00t wrote Upgrading your board and RAM would be a waste of money. Your CPU is locked, your RAM speed is fine (1333 MT/s, ~665 MHz), and you have the PCIe 16x slot.

Well the motherboard I already have currently doesn't support a graphics card with PCIe 3.0

It's your CPU, not the motherboard that doesn't have 3.0. 2.0 and 3.0 are both forward and backwards compatible and there will be no performance difference. For reference:

PCIe 2.0 at 16x is about as fast as 3.0 at 8x
PCIe 2.0 at 8x is about as fast as 3.0 at 4x

2.0 at 8x and/or 3.0 at 4x are generally as low as you can go without seeing a significant difference in performance .