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General information
LaunchedNever released
(Planned 2017)
Designed byAMD
Architecture and classification
Technology node14 nm FinFET
Instruction setARM64 (ARMv8-A)
PredecessorA1100 series

K12 was to be AMD's first custom microarchitecture based on the ARMv8-A (AArch64) instruction set[1] with a planned release in 2017.[2][3] Its predecessor, the Opteron A1100 series, also ARMv8-A, used ARM Cortex-A57 cores.[4] As of 2023 the product has officially been canceled.[5]

The microarchitecture was to focus on high frequency and power efficiency and was to target the dense server, embedded and semi-custom market segments.[6]

See also[edit]


  1. ^ Shimpi, Anand Lal (May 5, 2014). "AMD Announces K12 Core: Custom 64-bit ARM Design in 2016". AnandTech. Retrieved June 1, 2014.
  2. ^ Windeck, Christof (May 6, 2015). "AMD setzt ganz auf "Zen"-Prozessoren" (in German) (online ed.). Heise. Retrieved May 7, 2015.
  3. ^ "AMD delays introduction of K12-based processors to 2017 | KitGuru".
  4. ^ "Will AMD's Seattle Push ARM Servers Into The Mainstream?", The Next Platform, 2016-01-14
  5. ^ Subramanium, Vaidyanathan (22 June 2022). "Zen architecture pioneer Jim Keller feels AMD was stupid to cancel the K12 Core ARM processor". NotebookCheck. Retrieved 17 January 2023.
  6. ^ Wasson, Scott (May 5, 2014). "AMD reveals K12: New ARM and x86 cores are coming, Already deep into development". The Tech Report.