Zen 2

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AMD Zen 2
ProducedQ2 2019 (estimated)
Designed byAMD
Common manufacturer(s)
Min. feature size7 nm[1][2]
Coresup to 64 (server)
SuccessorZen 3[3][2]
Product code name(s)
  • Matisse (Desktop)
  • Castle Peak (HEDT)
  • Rome (Server)[2]

Zen 2 is the codename for a successor of AMD's Zen and Zen+ microarchitectures due to be fabricated on the 7 nanometer node from TSMC with product sampling planned for late 2018, followed by commercial release mid 2019, powering the third generation of Ryzen processors, known as Ryzen 3000 for the mainstream desktop chips, and Threadripper 3000 for high-end desktop systems.[4]

Zen 2 is expected to bring an increase in instructions per clock over Zen, but not nearly as large as the jump from Excavator to Zen.[5] At the 2018 Consumer Electronics Show (CES), AMD confirmed that Zen 2 design was complete; however, its release was not announced for 2018, leading analysts to predict a 2019 release date.[6]

Zen 2 is planned to include hardware mitigations to the Spectre security vulnerability.[7] Zen 2-based EPYC server CPUs (codename "Rome") use a design in which multiple CPU dies (up to 8x in total) manufactured on a 7 nm process ("chiplets") are combined with a 14 nm I/O die on each MCM package. Through this, up to 64 physical cores and 128 total compute threads (with simultaneous multithreading) are supported per socket.[8] At 2019 CES, AMD showed a Ryzen 3rd-generation engineering sample that contains one chiplet with 8 cores and 16 threads.[4] Lisa Su also said to expect more than 8 cores in the final lineup.[9]

See also[edit]


  1. ^ Larabel, Michael (16 May 2017). "AMD Talks Up Vega Frontier Edition, Epyc, Zen 2, ThreadRipper". Phoronix. Retrieved 16 May 2017.
  2. ^ a b c Cutress, Ian (20 June 2017). "AMD EPYC Launch Event Live Blog". AnandTech. Retrieved 21 June 2017.
  3. ^ Wong, Adrian (18 April 2017). "Joe Macri: The Disruptive Nature of AMD Ryzen". TechArp. Retrieved 20 April 2017.
  4. ^ a b Cutress, Ian (9 January 2019). "AMD Ryzen 3rd Gen 'Matisse' Coming Mid 2019: Eight Core Zen 2 with PCIe 4.0 on Desktop". AnandTech. Retrieved 15 January 2019.
  5. ^ "AMD's next-gen Zen CPU due in 2016".
  6. ^ Cutress, Ian (8 January 2018). "AMD Tech Day at CES". AnandTech. Retrieved 8 January 2018.
  7. ^ Alcorn, Paul (31 January 2018). "AMD Predicts Double-Digit Revenue Growth In 2018, Ramps Up GPU Production". Tom's Hardware. Retrieved 31 January 2018.
  8. ^ Shilov, Anton (6 November 2018). "AMD Unveils 'Chiplet' Design Approach: 7nm Zen 2 Cores Meet 14 nm I/O Die".
  9. ^ Hachman, Mark (9 January 2019). "AMD's CEO Lisa Su confirms ray tracing GPU development, hints at more 3rd-gen Ryzen cores". Retrieved 15 January 2019.