Form factors

Several anatomy factors are frequently acclimated in DIMMs. Single Data Rate (SDR) SDRAM DIMMs frequently came in two capital heights: 1.7-inch and 1.5-inch. When 1U rackmount servers started acceptable popular, these anatomy agency Registered DIMMs had to bung into angled DIMM sockets to fit in the 1.75" top box. To allay this issue, the next standards of DDR DIMMs were created with a "Low Profile" (LP) acme of ~1.2". These fit into vertical DIMM sockets for a 1U platform. With the appearance of brand servers, the LP anatomy agency DIMMs accept already afresh been generally angled to fit in these space-constrained boxes. This led to the development of the Very Low Profile (VLP) anatomy agency DIMM with a acme of ~.72" (18.3 mm). The DDR3 JEDEC accepted for VLP DIMM acme is 18.75mm. These will fit angular in ATCA systems. Other DIMM anatomy factors cover the SO-DIMM, the Mini-DIMM and the VLP Mini-DIMM.