Dell OptiPlex 980 Technical Guidebook - Page 11

Memory NOTES: • Your computer supports a maximum of 8GB of memory when you use four 2GB DIMMs; however, 32-bit operating systems, such as the 32-bit version of Microsoft® Windows® XP, can only use a maximum of 4 GB 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 the operating system is less than 4GB. • The entire 8GB memory range is available to 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, but with a slight reduction in performance. DT SFF Type: DDR3 Synch DRAM Non-ECC Memory 1066MHz or 1333MHz DIMM Slots 4 4 DIMM Capacities Up to 2GB Up to 2GB Minimum Memory 1GB 1GB 1066MHz/1333MHz Memory configurations 8GB1 DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (4 DIMM) X X 4GB1 DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (4 DIMM) X X 4GB1 DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (2 DIMM) X X 3GB DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (3 DIMM) X X 3GB DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (2 DIMM) X X 2GB DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (2 DIMM) X X 2GB DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (1 DIMM) X X 1GB DDR3 Non-ECC SDRAM, 1066MHz/1333MHz, (1 DIMM) X X 1 The total amount of available memory will be less than 4GB. The amount less depends on the actual system configuration. To fully utilize 4GB or more of memory requires a 64-bit enabled processor and 64-bit operating system. OptiPlex XE Technical Guidebook Page 11