Crucial 240-pin DIMMs for DDR3 Memory Upgrade your desktop computer's memory with Crucial's 240-pin DIMMs for DDR3 memory. This latest generation of memory features an improved architecture that allows for faster data transmission. What is a Dual Inline Memory Module (DIMM)? A dual inline memory module (DIMM) is a small circuit board that contains a number of memory components, usually black in color, attached to a green printed circuit board. The gold pins on the bottom of the DIMM provide a connection between the module and a socket on a larger printed circuit board. The pins on the front and back of a DIMM are not connected to each other. 64-bit Data Path for Faster Performance Each 240-pin DIMM provides a 64-bit data path, with the exception of ECC, registered, and Fully Buffered modules which have a 72-bit data path. Please note that the high-performance Ballistix and Ballistix Tracer memory do not come in 72-bit or registered modules. Standard DDR3 240-pin DIMMs are currently available in PC3-8500 (DDR3 1066MHz) and PC3-10600 (DDR3 1333MHz) speeds, with additional speeds to be added as technology advances. Compatibility and Size In order to use DDR3 memory, your system motherboard must have 240-pin DIMM slots and a DDR3-enabled chipset. This is because a DDR3 SDRAM DIMM will not fit into a standard DDR2 DIMM socket or a DDR DIMM socket. The number of black components on a 240-pin DIMM may vary, but it will always have 120 pins on the front and 120 pins on the back, for a total of 240. These DIMMs are approximately 5.25 inches long and 1.18 inches high, though the heights may vary. While 240-pin DDR3 DIMMs, 240-pin DDR2 DIMMs, 184-pin DDR DIMMs, and 168-pin DIMMs are all roughly the same size, 240-pin DIMMs and 184-pin DIMMs have only one notch within the row of pins.
