DRAM (memory) modules

• Single In-line Pin Package (SIPP)
• Single In-line Memory Module (SIMM)
• Dual In-line Memory Module (DIMM)
• Rambus In-line Memory Module (RIMM), technically DIMMs but called RIMMs due to their proprietary slot.
• Small outline DIMM (SO-DIMM), about half the size of regular DIMMs, are mostly used in notebooks, small footprint PCs (such as Mini-ITX motherboards), upgradable office printers and networking hardware like routers. Comes in versions with:
  • 72-pin (32-bit)
  • 144-pin (64-bit) used for PC100/PC133 SDRAM
  • 200-pin (72-bit) used for DDR and DDR2
  • 240-pin (72-bit) used for DDR3
• Small outline RIMM (SO-RIMM). Smaller version of the RIMM, used in laptops. Technically SO-DIMMs but called SO-RIMMs due to their proprietary slot.