So I currently have 8GB of Corsair Vengeance DDR3-1333 RAM (the rig is in my signature). Would I see a worthwhile improvement in gaming if I upgraded to some really high-clocked RAM (1866, 2133, etc.)? And if so, do you guys have some recommendations for which kits to use?
I think the RAM clock speed is limited by your processor. I have an i5-3570k, overclocked to 4.4 GHz, but the RAM is all the same after 1600 MHz. It also depends on your motherboard. It's worth a google or two.