Maximize the value of your system with the Crucial CT2K4G3S1067M 8GB (4GBx2) DDR3 1066 Unbuffered RAM, designed for laptops and notebooks. RAM Features Type: 204-Pin DDR3 SDRAM Form Factor: SO-DIMM Capacity: 8 GB (4GBx2) Speed: DDR3 1066 Voltage: 1.35V ECC: Non-ECC Dimensions: 66mm x 30mm