Dell OptiPlex 790 Technical Guidebook - Page 13

DELL™ OPTIPLEX™ 790 TECHNICAL GUIDEBOOK - V 1.6 MEMORY NOTE: 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. The entire 16-GB memory range is available to 64-bit operating systems. Type: DDR3 Synch DRAM Non-ECC Memory DIMM Slots DIMM Capacities Minimum Memory Maximum System Memory Memory configurations 16GB1 DDR3, 1333MHz, (4 DIMM) 8GB1 DDR3, 1333MHz, (2 DIMM) 4GB1 DDR3, 1333MHz, (2 DIMM) 4GB1 DDR3, 1333MHz, (1 DIMM) 3GB DDR3, 1333MHz, (2 DIMM) 2GB DDR3, 1333MHz, (1 DIMM) 1GB DDR3, 1333MHz, (1 DIMM) MT 4 Up to 4GB 1GB 16GB1 DT SFF 1333MHz 4 4 Up to 4GB Up to 4GB 1GB 16GB1 1GB 16GB1 USFF 2 Up to 4GB 1GB 8GB1 X X X X X X X X X X X X X X X X X X X X X X X X 13 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.