Common DRAM modules

DIP 16-pin (DRAM chip, usually pre-FPRAM)

SIPP (usually FPRAM)

SIMM 30-pin (usually FPRAM)

SIMM 72-pin (often EDO RAM but FPM is not uncommon)

DIMM 168-pin (SDRAM)

DIMM 184-pin (DDR SDRAM)

RIMM 184-pin (RDRAM)

DIMM 240-pin (DDR2 SDRAM/DDR3 SDRAM)