September 21, 2018
  ―
  Apple A12 Bionic
  4 GB LPDDR4X

  September 21, 2018
  ―
  Apple A12 Bionic
  4 GB LPDDR4X

  November 10, 2017
  ―
  Apple A11 Bionic
  3 GB LPDDR4X RAM

  September 22, 2017
  ―
  Apple A11 Bionic
  3 GB LPDDR4X RAM

  September 22, 2017
  ―
  Apple A11 Bionic
  2 GB LPDDR4X RAM

  September 16, 2016
  ―
  Apple A10 Fusion
  3 GB LPDDR4 RAM

  September 16, 2016
  ―
  Apple A10 Fusion
  2 GB LPDDR4 RAM

  March 31, 2016
  ―
  Apple A9
  2 GB LPDDR4

  September 25, 2015
  ―
  Apple A9
  2 GB LPDDR4

  September 25, 2015
  ―
  Apple A9
  2 GB LPDDR4

  September 19, 2014
  ―
  Apple A8
  1 GB LPDDR3

  September 19, 2014
  ―
  Apple A8
  1 GB LPDDR3

  September 20, 2013
  ―
  Apple A7
  1 GB LPDDR3

  September 20, 2013
  ―
  Apple A6
  1GB LPDDR2

  September 21, 2012
  ―
  Apple A6
  1 GB LPDDR2

  October 14, 2011
  ―
  Apple A5
  512 LPDDR2

  June 24, 2010
  ―
  Apple A4
  512 MB LPDDR

  June 19, 2009
  ―
  600 MHz ARM Cortex-A8
  256 MB DRAM

  July 11, 2008
  ―
  Samsung 32-bit RISC ARM 1176JZ(F)-S v1.0
  128 MB LPDDR

  June 29, 2007
  ―
  Samsung 32-bit RISC ARM 1176JZ(F)-S v1.0
  128 MB eDRAM