List of Intel CPU microarchitectures

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The following is a partial list of Intel CPU microarchitectures. The list is incomplete.

x86 microarchitectures[edit]

Microarchitecture Pipeline stages max. Clock
486 (80486) 3 100 MHz 30 ns
P5 (Pentium) 5 300 MHz 16.7 ns
P6 (Pentium Pro/II) 14 (17 with load & store/retire) 450 MHz 31 ns
P6 (Pentium 3) 8 (11 with load&store/retire) 1400 MHz 5.7 ns
P6 (Pentium M, Yonah) 10 (12 with fetch/retire) 2260 MHz 4.4 ns
NetBurst (Willamette) 20
NetBurst (Northwood/Gallatin) 20 3060/3466 MHz 6.5/5.8 ns
NetBurst (Prescott) 31
NetBurst (Cedar Mill) 31 3600 MHz 8.6 ns
Core (Merom/Conroe/Woodcrest) 12 (14 with fetch/retire) 3000 MHz 4 ns
Nehalem 20
Sandy Bridge 14 (16 with fetch/retire)
Haswell 14 (16 with fetch/retire) 4400 MHz 3.5 ns
Broadwell 14 (16 with fetch/retire) 3500 MHz
Skylake 14 (16 with fetch/retire) 4200 MHz
Bonnell 16 (20 with prediction miss due to in order pipeline ) 2133 MHz
Larrabee 20 (23 with prediction miss due to in order pipeline ) 1500 MHz
  • 8086: first x86 processor; initially a temporary substitute for the iAPX 432 to compete with Motorola, Zilog, and National Semiconductor and to top the successful Z80.
  • 186: included a DMA controller, interrupt controller, timers, and chip select logic.
  • 286: first x86 processor with protected mode, by a factor of 3...4 faster than the 8086
  • i386: first 32-bit x86 processor
  • i486: Intel's second generation of 32-bit x86 processors, introduced built-in floating point unit (FPU), 8 KB on-chip L1 cache, and pipelining.
  • P5: original Pentium microprocessors
  • P6: used in Pentium Pro, Pentium II, Pentium II Xeon, Pentium III, and Pentium III Xeon microprocessors.
    • Pentium M: updated version of Pentium III's P6 microarchitecture designed from the ground up for mobile computing.
    • Enhanced Pentium M: updated, dual core version of the Pentium M microarchitecture used in Core microprocessors.
  • NetBurst: used in Pentium 4, Pentium D, and some Xeon microprocessors. Commonly referred to as P7 although its internal name was P68 (P7 was used for Itanium). Later revisions were the first to feature Intel's x86-64 architecture.
  • Core: reengineered P6-based microarchitecture used in Core 2 and Xeon microprocessors, built on a 65 nm process.
    • Penryn: 45 nm shrink of the Core microarchitecture with larger cache, higher FSB and clock speeds, and SSE4.1 instructions.
  • Nehalem: released November 17, 2008, built on a 45 nm process and used in the Core i7, Core i5, Core i3 microprocessors. Incorporates the memory controller into the CPU die.
    • Westmere: 32 nm shrink of the Nehalem microarchitecture with several new features.
  • Sandy Bridge: released January 9, 2011, built on a 32 nm process and used in the Core i7, Core i5, Core i3 second generation microprocessors, and in Pentium B9XX and Celeron B8XX series. Formerly called Gesher but renamed in 2007.[1]
    • Ivy Bridge: 22 nm shrink of the Sandy Bridge microarchitecture released April 28, 2012.
  • Haswell: 22 nm microarchitecture, released June 3, 2013.
    • Broadwell: 14 nm shrink of the Haswell microarchitecture, released in September 2014. Formerly called Rockwell.
  • Skylake: new 14 nm microarchitecture, released August 5, 2015.
    • Kaby Lake: expected in 2016, breaking Intel's Tick-Tock schedule due to delays with the 10 nm process.
    • Cannonlake: 10 nm shrink of Kaby Lake. Formerly called Skymont.
  • Ice Lake: new 10 nm microarchitecture, expected in 2018.
    • Tiger Lake: an update of Ice Lake, serving as "semi-Tock" of the Intel's Tick-Tock strategy, expected in 2019.
  • Larrabee: multi-core in-order x86-64 updated version of P5 microarchitecture, with wide SIMD vector units and texture sampling hardware for use in graphics. Cores derived from this microarchitecture are called MIC (Many Integrated Core).
  • Bonnell: 45 nm, low-power, in-order microarchitecture for use in Atom processors.
    • Saltwell: 32 nm shrink of the Bonnell microarchitecture.
  • Silvermont: 22 nm, out-of-order microarchitecture for use in Atom processors, released May 6, 2013.
    • Airmont: 14 nm shrink of the Silvermont microarchitecture.
  • Goldmont: 14 nm Atom microarchitecture.[2][3]

Itanium microarchitectures[edit]


Architectural change Fabrication process Micro​architecture Codenames Release date Processors
8P/4P Server 4P/2P Server/WS Enthusiast/​WS Desktop Mobile Marketing names
Tick Manufacturing Technology 65 nm P6, NetBurst Presler, Cedar Mill, Yonah 2006-01-05 Presler Cedar Mill Yonah

New Microarchitecture

Core Merom[5] 2006-07-27[6] Tigerton Woodcrest
Kentsfield Conroe Merom

Manufacturing Technology

45 nm Penryn 2007-11-11[7] Dunnington Harpertown Yorkfield Wolfdale Penryn

New Microarchitecture

Nehalem Nehalem 2008-11-17[8] Beckton Gainestown Bloomfield Lynnfield Clarksfield

Manufacturing Technology

32 nm Westmere 2010-01-04[9][10] Westmere-EX Westmere-EP Gulftown Clarkdale Arrandale

New Microarchitecture

Sandy Bridge Sandy Bridge 2011-01-09[11] (Skipped)[12] Sandy Bridge-EP Sandy Bridge-E Sandy Bridge Sandy Bridge-M 2nd Generation Intel Core

Manufacturing Technology

22 nm[13] Ivy Bridge 2012-04-29 Ivy Bridge-EX[14] Ivy Bridge-EP[14] Ivy Bridge-E[15] Ivy Bridge Ivy Bridge-M 3rd Generation Intel Core

New Microarchitecture

Haswell Haswell 2013-06-02 Haswell-EX Haswell-EP Haswell-E Haswell-DT[16]
  • Haswell-MB (notebooks)
  • Haswell-LP (ultrabooks)[16]
4th Generation Intel Core
Refresh Haswell Refresh, Devil's Canyon[17] 2014-06 i5-4690K

Manufacturing Technology

14 nm[13] Broadwell[18] 2014-09-05 Broadwell-EX [19] Broadwell-EP [19] 5th Generation Intel Core

New Microarchitecture

Skylake[18] Skylake[18] 2015-08-05[20] Skylake-EX Skylake-EP 6th Generation Intel Core
Kaby Lake[24] 2016
Tick 10 nm[25] Cannonlake 2017
Tock Ice Lake[23] Ice Lake 2018
semi-Tock[23] Tiger Lake[23] 2019
Tick 7 nm[25]  ?
Tock  ?
Tick 5 nm[25]  ?
Tock  ?

Atom Roadmap[26]
Fabrication process Microarchitecture Release date Processors/SoCs
MID, Smartphone Tablet Netbook Nettop Embedded Server Communication CE
45 nm Bonnell 2008 Silverthorne N/A Diamondville Tunnel Creek & Stellarton N/A Sodaville
2010 Lincroft Pineview Groveland
32 nm Saltwell 2011 Medfield (Penwell & Lexington) & Clover Trail+ (Cloverview) Clover Trail (Cloverview) Cedar Trail (Cedarview) Unknown Centerton & Briarwood Unknown Berryville
22 nm Silvermont 2013 Merrifield (Tangier) [27] & Moorefield (Anniedale)[28] & Slayton Bay Trail-T (Valleyview) Bay Trail-M (Valleyview) Bay Trail-D (Valleyview) Bay Trail-I (Valleyview) Avoton Rangeley Unknown
Tick 14 nm[26] Airmont 2014 Binghamton & Riverton Cherry Trail-T (Cherryview) [29] Braswell Unknown Unknown Denverton Unknown Unknown
Tock Goldmont[2][3] 2015 Morganfield (Broxton)[30] Willow Trail (Willowview) Unknown Unknown Unknown Unknown Unknown Unknown

See also[edit]


  1. ^ "An Update On Our Graphics-related Programs". May 25, 2010. 
  2. ^ a b "Intel Software Development Emulator". 
  3. ^ a b ""Goldmont"- the sequel to Silvermont Atom?". 
  4. ^ Anton Shilov (June 19, 2007). "Intel Plans to change Itanium Micro-Architecture". X-bit Labs. Retrieved 2007-10-05. 
  5. ^ Crothers, Brooke (2009-02-10). "Intel moves up rollout of new chips | Nanotech - The Circuits Blog - CNET News". Retrieved 2014-02-25. 
  6. ^ Intel CEO: Latest Platforms, Processors Form New Foundations For Digital Entertainment And Wireless Computing, Intel Unveils World's Best Processor
  7. ^ Intel Unveils 16 Next-Generation Processors, Including First Notebook Chips Built on 45nm Technology
  8. ^ Intel Launches Fastest Processor on the Planet
  9. ^
  10. ^ Revolutionizing How We Use Technology—Today and Beyond
  11. ^ Intel Sandy Bridge chip coming January 5
  12. ^ Intel Ivy Bridge CPU Range Complete by Next Year
  13. ^ a b 22nm technology. May 2011
  14. ^ a b
  15. ^ Ivy Bridge-E Delayed Until Second Half of 2013
  16. ^ a b "Leaked specifications of Haswell GT1/GT2/GT3 IGP". Tech News Pedia. 2012-05-20. Retrieved 2014-02-25. 
  17. ^ "Devils Canyon mit bis zu 4,4 GHz, ohne verlöteten Deckel". Jun 3, 2014. 
  18. ^ a b c After Intel's Haswell comes Broadwell - SemiAccurate
  19. ^ a b Intel to release 22-core Xeon E5 v4 “Broadwell-EP” late in 2015
  20. ^ The wait for Skylake is almost over, first desktop chips likely to hit August 5
  21. ^ "Intel 14nm Kaby Lake “Skylake Refresh” Platform Detailed – Launching in 2H 2016, 256 MB eDRAM H-Series and 91W K-Series Unveiled". July 2015. The Kaby Lake platform will be similar to Skylake platform that launches this year and will act as a platform refresher 
  22. ^ "Intel Releasing 14nm Kaby Lake Processor in 2016 Ahead of 10nm Cannonlake". 2015-07-08. We have long known that Intel was planning a ‘Skylake Refresh’ that has always been on the roadmap between Skylake and Cannonlake, but it appears that refresh might be going by the code name Kaby lake now. 
  23. ^ a b c d "Intel’s Cannonlake CPUs To Be Succeeded By 10nm Ice Lake Family in 2018 and 10nm Tiger Lake Family in 2019". WCCFTech. 2016-01-20. 
  24. ^ "Intel confirms tick-tock shattering Kaby Lake processor as Moore’s Law falters". Jul 15, 2015. the switch to 10nm manufacturing has been delayed until the second half of 2017. 
  25. ^ a b c "Intel currently developing 14nm, aiming towards 5nm chips - CPU - News". 2012-05-15. Retrieved 2014-02-25. 
  26. ^ a b "Intel’s Silvermont Architecture Revealed: Getting Serious About Mobile". AnandTech. 
  27. ^ Hiroshige, Goto. "Intel Products for Tablets & SmartPhones" (PDF). 標準. Impress. 
  28. ^ "Import Data and Price of anniedale". 
  29. ^ "アウトオブオーダーと最新プロセスを採用する今後のAtom". 
  30. ^ "venkata yelampalli". 

External links[edit]