RAM Kingston 4GB DDR3L 1600MHz CL11 Dual Voltage:This fast Kingston memory module will kickstart your computer to a high speed. This is the latest generation 4GB DDR3 module which compared to previous modules, delivers a higher frequency resulting in increased performance, but at the same time, power consumption has decreased due to new production processes. The memory module is certified PC3-12800, which corresponds to a 1600MHz frequency which achieves CL11 timing. It is primarily designed for computers where great emphasis is placed on performance and stability.