Lower latency is the lower time it takes between cycles of the memory chips to input/output the code to / from the CPU. BUUUUTTTTT memory timing is ALWAYS determined by your Mobo/CPU, you can't "improve" this in anyway, except to replace the Mobo/CPU with something else that uses that 'other' timing. Never really mess with CAS - Voltage really, unless you have specific knowledge on that specific piece of equipment (MOBO, CPU, GPU) to 'Overclock' it past the 'default' settings. The Default settings are guaranteed to always work that way, but if you OC stuff, you will burn out the lifespan of the equipment faster and ALWAYS HIGHER RISK of BURNING IT OUT by mistake. Just so your warned.