CMS 32GB (4X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Alienware® M18X R1 Notebook Series - A6

4PC OF 8GB 204p PC3-12800 CL11 16c 256x8 DDR3-1600 SODIMM. Lifetime exchange or repair warranty against manufacturing defects. We don't use OEM or Generic module to avoid incompatibility. Guaranteed to work in your notebook or you get your money back. Compatible with: Alienware M18X R1 Notebook Maximum Memory: 32 GB Expansion: 4 Sockets Maximum configurations require a 64-bit operating system.