Crucial 240-pin DIMMs are used in DDR3 memory for desktop computers DDR3 is the latest generation of memory with an enhanced architecture that allows it to transmit data more quickly A dual inline memory module (DIMM) consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green) The gold pins on the bottom of the DIMM provide a connection between the module & a socket on a larger printed circuit board The pins on the front & back of a DIMM are not connected to each other To use DDR3 memory your system motherboard must have 240-pin DIMM slots & 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 Memory Memory layout (modules x size) 2 x 4 GB Internal memory 8 GB Component for PCserver Memory form factor 240-pin DIMM CAS latency 13 Memory voltage 135 V Module configuration 512M x 64 Unbuffered memory Yes ECC No Memory clock speed 1866 MHz Internal memory type DDR3