Crucial 240-pin DDR3 DIMMs for Desktop Computers Upgrade your desktop computer's memory with Crucial's 240-pin DDR3 DIMMs. DDR3 is the latest generation of memory, featuring an improved architecture that allows for faster data transmission. Improved Performance with DDR3 Technology DDR3 DIMMs are designed with a dual inline memory module (DIMM) structure, consisting of multiple memory components attached to a green printed circuit board. The gold pins on the bottom of the DIMM provide a secure connection to the motherboard's socket, while the front and back pins remain unconnected. Compatibility and Installation To use DDR3 memory, your system's motherboard must have 240-pin DIMM slots and a DDR3-enabled chipset. This ensures proper compatibility and optimal performance. Please refer to your motherboard's manual for installation instructions.