I have corsair vengeance 1600mhz ram 2x4gb sticks installed in my computer. However whenever I run cpu z or a program that shows the rams frequency they are only running at 667mhz. My knowledge here is pretty lacking. Is this normal? Is there a bios setting I need to enable? I had tried to adjust the settings in the bios previously to overclock it or set it to run at 1600mhz but it would not load windows and crash.