G.Skill 16GB DDR3-2133. Internal memory: 16384 MB, Internal memory type: DDR3, Memory clock speed: 2133 MHz. Memory voltage: 1.65 V. Height: 40 mm. Compatibility: P8Z68 DELUXE P8Z68-V PRO P8Z68-V GA-Z68X-UD7-B3 GA-Z68X-UD5-B3 GA-P67A-UD7 Z68A-GD80 Z68A-GD65