I'm wondering if increasing my memory from 1333 Mhz (PC 10666) to 1866 Mhz (PC 15000) will give much of a performance boost. I currently have a 1920x1080 monitor, an i7 2600, 2 EVGA overclocked GTX 460s in sli, and 16 GB of 1333 Mhz RAM. I mainly play LOTRO, Shogun 2, and SWTOR. I may purchase X Com soon and was wondering if going to the faster memory would boost performance or if I be better served putting my money elsewhere.