CMS 8GB (2X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Alienware® Alienware M17X R1 Notebook Ddr3-Pc8500 Pc1066 - A35

2PC OF 4GB 204p PC3-8500 CL7 16c 256x8 DDR3-1066 SODIMM.Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS Compatible with: Alienware Alienware M17x R1 Laptop Maximum Memory: 4 GB using a 32-bit Operating System 8 GB using a 64-bit Operating System Expansion: 2 Sockets MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode. This system is configurable from the manufacturer and may ship with a different amount of standard memory installed. If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). Maximum configurations require a 64-bit operating system.