What is the difference between SIMMs and DIMMs?
DIMM stands for dual inline memory module, and SIMM stands for single inline memory module. The gold or tin pins on the lower edge of the front and back of a SIMM are connected, providing a single line of communication paths between the module and the system. The pins on a DIMM are not connected, providing two lines of communication paths between the module and the system, one in the front and one in the back. SIMMs and DIMMs are not interchangeable; they are different sizes and they install into different types of sockets.
Related Questions
- How are different sized SIMMs and DIMMs -- 16 Mbytes, 32 Mbytes, etc. -- designed with different types of DRAM devices, such as 4M x 4, 2M x 8, and 1M x 16 parts?
- Why has Apple transitioned memory expansion from 72-pin SIMMs to 168-pin DIMMs for Power Macintosh computers?
- What speed SIMMs and DIMMs are required for Power Macintosh computers?