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Definition: LPDDR SDRAM


(Low-Power Double Data Rate SDRAM) LPDDR SDRAM memory chips conserve power in mobile devices as well as in high-performance systems where huge amounts of RAM are used; for example, see NVIDIA Grace Hopper Superchip. Also called "mobile DDR" (mDDR). Supporting 16 and 32-bit channels rather than the 64-bit paths in laptop and desktop computers, LPDDR modules are soldered on the device's motherboard and not removable like DIMM modules in computers. Following are the LPDDR generations. See SDRAM.

        Memory Speed      Voltages
           (MHz)          Required

  LPDDR5X   4267        0.5  1.05  1.8
  LPDDR5    3200        0.5  1.05  1.8

  LPDDR4X   2133        0.6  1.1  1.8
  LPDDR4    1600        1.1  1.8

  LPDDR3E   1067        1.2  1.8
  LPDDR3     800        1.2  1.8

  LPDDR2E    533.3      1.2  1.8
  LPDDR2     400        1.2  1.8

  LPDDR1E    266.7      1.8
  LPDDR1     200        1.8