Use of DIMM memory modules in computers

DIMM means Dual In Memory Module. DIMM chips are DRAM chips connected in series. They are used widely in personal computers. DIMM chips have a printed circuit board which connects the different DRAM chips in series so that they can be used in a computer.

DIMM memory modules have a 64 bit memory path and they began to get popular with Intel based P5 systems. There are different types of DIMM cards according to the number of pins on each card. DDR DIMMs are popular in present day computing technology with DDR3 DIMM in the top. DDR2 and DDR3 each have a different notch positions in their DIMM cards to prevent accidental entry of one card in to a slot allotted for other type of card.

Most of the DIMM memory modules are built with x4 or x8 DRAM memory chips with 9 memory chips per side. The speeds increase as the type of DRAM in DIMM chips differs. DDR3 stands at the top in speed with DDR2, DDR and SDRAM DIMM in order.