Intel E6400 Technology Guide - Page 60

Latitude E6500, E6400, EL6at4it0u0deAET65G00T, eEc6h40n0icRael vGieuwidere'sboGouikde Memory* Your computer supports a maximum of 8GB* of memory when you use two 4GB DIMMs; however, 32-bit operating systems, such as the 32-bit version of Microsoft® Windows® XP, can only use a maximum of 4GB of address space. Moreover, certain components within the computer require address space in the 4GB range. Any address space reserved for these components cannot be used by computer memory; therefore, the amount of memory available to a 32-bit operating system is less than 4GB. NOTE: Greater than 4GB memory requires 64-bit operating systems. Memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not installed in matched pairs, the computer will continue to operate. Memory DIMM slots DIMM speed Minimum Memory* Configuration Maximum Memory* Configuration DIMM Configurations E6500, E6400, E6400 ATG 2 800 MHz 1GB 8GB* 8GB* (2 x 4GB) 4GB *(1 x 4GB) 4GB *(2 x 2GB) 3GB (1 x 2GB, 1 x 1GB) 2GB (1 x 2GB) 2GB (2 x 1GB) 1GB (1 x 1GB) 1GB (2 x 512MB) *See important information at end of document 60