Hi all. I have a Gigabyte Z77-D3h Motherboard with an i5 3570k CPU. I know it's old, but right now replacing the Mx board and CPU is not an option. It has 4 slots for RAM. I had two 4 GB sticks of DDR 3 in it and added a third 4 GB for a total of 12 GB RAM. The performance in terms of loading...