Zen (microarchitecture)

Zen is the codename for a family of computer processor microarchitectures from AMD, first launched in February 2017 with the first generation of its Ryzen CPUs.


First generationEdit

The first generation Zen was launched with the Ryzen 1000 series of CPUs (codenamed Summit Ridge) in February 2017.[1] The first Zen-based preview system was demonstrated at E3 2016, and first substantially detailed at an event hosted a block away from the Intel Developer Forum 2016. The first Zen-based CPUs reached the market in early March 2017, and Zen-derived Epyc server processors (codenamed "Naples") launched in June 2017[2] and Zen-based APUs (codenamed "Raven Ridge") arrived in November 2017.[3]

Second generationEdit

Zen+ was first released in April 2018,[4] powering the second generation of Ryzen processors, known as Ryzen 2000 (codenamed "Pinnacle Ridge") for mainstream desktop systems, and Threadripper 2000 (codenamed "Colfax") for high-end desktop setups.

Third generationEdit

The Ryzen 3000 series CPUs were released on July 7, 2019,[5][6] while the Zen 2-based Epyc server CPUs (codename "Rome") were released on August 7, 2019.[7] Zen 2 also powered a line of desktop APUs marketed as Ryzen 4000.

Fourth generationEdit

Zen 3 is expected for release in 2020,[8] using an improved 7nm manufacturing process. It will power desktop Ryzen 4000 CPUs, utilizing the Vermeer microarchitecture, and Epyc processors using the Milan microarchitecture.

See alsoEdit


  1. ^ Anthony, Sebastian (18 August 2016). "AMD says Zen CPU will outperform Intel Broadwell-E, delays release to 2017". Ars Technica. Retrieved 18 August 2016.
  2. ^ Cutress, Ian. "AMD's Future in Servers: New 7000-Series CPUs Launched and Epyc Analysis". AnandTech. Retrieved 8 August 2017.
  3. ^ "HP ENVY x360 Convertible Laptop - 15z touch - HP® Official Store". store.hp.com.
  4. ^ Bright, Peter (8 January 2018). "AMD's 2018 roadmap: Desktop APUs in February, second-generation Ryzen in April". Ars Technica. Retrieved 9 January 2018.
  5. ^ Leather, Antony. "AMD Ryzen 9 3900X and Ryzen 7 3700X Review: Old Ryzen Owners Look Away Now". Forbes. Retrieved 2019-09-19.
  6. ^ "AMD Ryzen 3000 CPUs launching July 7 with up to 12 cores". PCGamesN. Retrieved 2019-05-28.
  7. ^ "2nd Gen AMD EPYC™ Processors Set New Standard for the Modern Datacenter with Record-Breaking Performance and Significant TCO Savings". AMD. August 7, 2019. Retrieved August 8, 2019.
  8. ^ Joel Hruska (January 10, 2020). "AMD's Lisa Su Confirms Zen 3 Coming in 2020, Talks Challenges in Notebooks". ExtremeTech.