Corsair 2x 8GB 1866MHz CL9 DDR3. Internal memory: 16384 MB, Internal memory type: DDR3, Memory clock speed: 1866 MHz. Memory voltage: 1.5 V. Weight: 45 g. Package weight: 59 g, Package dimensions (WxDxH): 15 x 135 x 150 mm. Compatibility: Intel Core i5 & i7