SDRAM Module Types
Submitted by SDRAM Technology on Thu, 07/09/2009 - 17:32
The following types of DRAM modules can be found in computers and notebooks: SIMMs, RIMMs, DIMMs and SODIMMs.
The differences between these module types are:
- SIMM = Single Inline Memory Module - The pins of the modules are located on both sides the PCB-board, but each front pin has a contact with a back pin (through contact holes), so that both receive the same signal.
DIMM = Dual Inline Memory Module - The pins of the modules are located on both sides the PCB-board, but the pins from the front do not contact with those on the back side, so that each receives a different signal.
- RIMM = Rambus inline memory modules - These modules are similar to DIMMs, but the PCB-boards are optimized for high speed Rambus-applications.
- SODIMM = Small Outline Dual Inline Memory Module - It is a smaller DIMM
with smaller contact pins. It is used in notebooks, where space is a critical parameter.
Here you can find some photos of DRAM modules.