6GB Total memory using 3pc of 2GB 1066MHz Module 240pin dimm DDR3 8500. Lifetime warranty for exchange. We don't use OEM or Generic modules to avoid incompatibility issues. Guaranteed to work or you get all of your money back including shipping. This Module might be manufactured by Samsung, Micron, Elpida or other depending on availability. Max Memory: 24GB Sockets for Upgrading: 6 (2 BANKS OF 3) 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. MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode Compatible with the following Systems: ZOTAC Motherboard X58 SERIES X58SLI-A-E Note: This system will work with 1066mhz of 1333mhz
