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AMD Ryzen
AMD Ryzen 1800X DSC 0251.jpg
AMD Ryzen 7 1800X
Produced From February 2017 to present
Marketed by AMD
Designed by AMD
Common manufacturer(s)
Max. CPU clock rate 3.0 GHz to 4.2 GHz
Min. feature size 14 nm
Instruction set AMD64/x86-64, MMX(+), SSE1, SSE2, SSE3, SSSE3, SSE4a, SSE4.1, SSE4.2, AES, CLMUL, AVX, AVX2, FMA3, CVT16/F16C, ABM, BMI1, BMI2, SHA
Microarchitecture Zen (microarchitecture)
Cores up to 16 cores/32 threads
Transistors 4.8 Billion (8 cores)[1]
Predecessor AMD FX
Product code name(s)
  • Summit Ridge
  • Whitehaven
  • Raven Ridge

Ryzen (/ˈrzɛn/ RYE-zen)[2] is a brand[3] of central processing units (CPUs) and accelerated processing units (APUs) marketed and designed by AMD.

The brand was introduced in 2017 with products implementing the Zen microarchitecture for the CPU, and the first Ryzen-branded products were officially announced during AMD's New Horizon summit on December 13, 2016.[4]

Product lineup[edit]


Zen microarchitecture[edit]


In the five years prior to the release of Ryzen, AMD's direct competitor in the x86-64 consumer level CPU marketspace, Intel, had continued to grow its market share with the continued tick-tock cycle of their Intel Core series of chips.[5] Since the release of the Bulldozer in 2011 AMD had fallen behind Intel significantly in both single-core and multi-core CPU performance benchmarks.[citation needed] While AMD had completed a die shrink and revision of the Bulldozer architecture, performance and sales had fallen significantly against the competing Intel products.[citation needed] Ryzen is the first consumer level implementation of the new Zen microarchitecture.[citation needed] Ryzen CPUs offered stronger multi-threaded performance and weaker single-threaded performance relative to comparable Intel CPUs.[citation needed] The Ryzen CPUs returned AMD to the high-end desktop CPU market, offering performance able to compete with Intel's Core i7 series of CPUs.[6] Since the release of Ryzen CPUs, AMD's CPU market share has increased.[5]

Summit Ridge / Whitehaven[edit]

  • All models except Threadripper (which use Socket TR4) require AMD Socket AM4.[7][8]
  • All models support DDR4-2666 ×2 Single Rank, DDR4-2400 ×2 Dual Rank, DDR4-2133 ×4 Single Rank, or DDR4-1866 ×4 Dual Rank. (With compatible DIMM quantities doubled on Threadripper due to their dual IMCs, and thus quad-channel memory support).[7][9]
  • All models support: x87, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, CLMUL, AVX, AVX2, FMA, CVT16/F16C, ABM, BMI1, BMI2, SHA.[10]
  • Transistors: 4.8 billion per 8-core "Zeppelin" die[1]
  • Die size: 192 mm² [11]
  • Stepping: B1[12]
  • Ryzen CPUs feature unlocked multipliers across the board for overclocking. All Ryzen products support auto-overclocking, dubbed "XFR" (eXtended Frequency Range), with X branded Ryzen products giving twice the XFR boost as non-X branded Ryzen products (100 MHz overclock vs 50 MHz overclock),[13] although AMD does not list non-X branded Ryzen CPUs as having support for XFR. Also of note is that these values are doubled on Threadripper CPUs; with X models having 200MHz rather than the usual 100MHz of XFR boost.[14]
  • AMD officially revealed their codename "Summit Ridge" Ryzen CPUs on February 22, 2017.[15] Ryzen CPUs differ from Zen-powered APUs (an APU is AMD's term for a CPU and GPU on a single chip) in that they exclude an integrated GPU and instead rely on an external, dedicated one.
  • Ryzen is launching in conjunction with a line of stock coolers, the "Wraith Spire", "Wraith Stealth" and "Wraith Max". This line succeeds the original "Wraith" cooler, which was positively received when released in mid-2016.[16] The "Wraith Stealth" and "Wraith Spire" are included with certain Ryzen CPUs; the "Stealth" is a low-profile unit meant for the lower-end CPUs and is rated for a TDP of 65W, whereas the "Spire" is the mainstream cooler with a TDP rating of 95W and modest headroom for overclocking, along with optional RGB lighting on certain models. The "Wraith Max" is a larger, aftermarket unit intended to handle more intensive overclocks than the "Spire".
  • All models support AMD's SenseMI Technology, which uses AMD Infinity Control Fabric to offer the following features.[7][17][18]
    • AMD Pure Power reduces the entire ramp of processor voltage and clock speed, for light loads.
    • AMD Precision Boost increases the processor voltage and clock speed while the number of active cores <= 2, (4 on Threadripper).
    • AMD XFR (eXtended Frequency Range) increases the processor voltage and clock speed beyond the maximum Precision Boost, when sufficient cooling is available.[19]
    • Neural Net Prediction and Smart Prefetch use true[further explanation needed] AI inside the processor to optimize instruction workflow and cache management.
Branding & Model
Clock rate (GHz) Cache[a] TDP Socket Memory
PCIe Lanes[b] Release
price (USD)
Base Boost XFR L2 L3
High-End (HEDT) 16 (32) Ryzen
Threadripper [22][23]
1950X[24][25] 3.4 4.0 4.2 512 KB
per core [25][26][27]
32 MB [25][26][27] 180 W TR4[28] DDR4-2666
64[30] Aug 10, 2017[31][32] $999
12 (24) 1920X[24][25] 3.5 $799
8 (16)[32] 1900X[25][31][32] 3.8[32] 16 MB[25] Aug 31, 2017[32] $549
Performance 8 (16) Ryzen 7 1800X 3.6 4.0 4.1 512 KB
per core
16 MB 95 W AM4 DDR4-2666
24[33] Mar 2, 2017 $499
1700X 3.4 3.8[34] 3.9 $399
Pro 1700X[35] TBA Jun 29, 2017 TBA
1700 3.0 3.7 3.75 65 W Mar 2, 2017 $329
Pro 1700[35] TBA Jun 29, 2017 TBA
Mainstream 6 (12) Ryzen 5 1600X 3.6 4.0 4.1 512 KB
per core
16 MB 95 W AM4 DDR4-2666
24 Apr 11, 2017 $249
1600 3.2 3.6 3.7 65 W $219
Pro 1600[35] TBA Jun 29, 2017 TBA
4 (8) 1500X 3.5 3.7 3.9 Apr 11, 2017 $189
Pro 1500[35] TBA Jun 29, 2017 TBA
1400 3.2 3.4 3.45 8 MB Apr 11, 2017 $169
Entry-Level 4 (4)[36] Ryzen 3 1300X[37][38] 3.5 3.7 3.9[39] 512 KB
per core
8 MB 65 W [36] AM4 DDR4-2666
24 Jul 27, 2017 $129
Pro 1300[35] TBA Jun 29, 2017 TBA
1200[37][38][40] 3.1 3.4 3.45[39] Jul 27, 2017 $109
Pro 1200[35] TBA Jun 29, 2017 TBA
  1. ^ AMD defines 1 kilobyte (KB) as 1024 bytes, and 1 megabyte (MB) as 1024 kilobytes.[20]
  2. ^ PCIe lane count includes 4 lanes used for connectivity to the chipset.[21]

Raven Ridge[edit]

AMD's CEO, Lisa Su, confirmed during a March 2017 Reddit AMA on /r/AMD that Zen-based APUs would also be branded Ryzen.[41] Traditionally, AMD's APUs were branded separately from their CPUs. The branding was later clarified as Ryzen Mobile and AMD stated the products would have higher CPU and GPU performance, and lower power, than the previous generation of APUs.[42]

In May 2017, AMD demonstrated a Ryzen Mobile APU with four Zen CPU cores and Vega based GPU.[43]

The first Ryzen Mobile APUs were officially released in October 2017.[44]

APU Branding & Model CPU GPU TDP Memory
Clock rate (GHz) Cache[a] Model Cores Config[b] Clock Processing power (GFLOPS)[c][d]
Base Boost XFR L2 L3
Ultrathin[45] Ryzen 5 2500U[44] 4 (8) 2.0 3.6[46] Unknown 2 MB 4 MB Vega 8 8 512:32:? 1100 1126.4 15 W (configurable 12-25 W)[47][48] DDR4-2400 (Dual channel)[47][48] 26 October 2017[47][48]
Ultrathin[45] Ryzen 7 2700U[44] 2.2 3.8 Unknown Vega 10 10 640:40:? 1300 1664
  1. ^ AMD defines 1 kilobyte (KB) as 1024 bytes, and 1 megabyte (MB) as 1024 kilobytes.[20]
  2. ^ Unified Shaders : Texture Mapping Units : Render Output Units
  3. ^ Precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
  4. ^ Single precision


Although AMD "verified" the ability for computers with Ryzen processors to boot Windows 7 and Windows 10, Microsoft only officially supports Ryzen on computers running Windows 10 per support policies. Windows Update blocks updates from being installed on Ryzen systems running versions older than Windows 10 – although that restriction can be avoided either by not installing its respective update, or be bypassed entirely with an unofficial patch.[49] And while AMD initially stated they would only provide Ryzen chipset drivers for Windows 10,[50] AMD's Ryzen / Threadripper chipset driver package does list and include official drivers for Windows 7.[51] Ryzen processors are compatible with Linux; the full performance of Ryzen is enabled in kernel version 4.10 or newer.[52]

Initial reception[edit]

The first Ryzen 7 1700, 1700X, and 1800X processors debuted in early March 2017, and were generally well received by hardware reviewers.[53][54][55] Ryzen was the first brand new architecture from AMD in five years, and without very much initial fine-tuning or optimization, it ran generally well for reviewers.[56] Initial Ryzen chips ran well with software and games already on the market, performing exceptionally well in workstation scenarios, and well in most gaming scenarios. Compared to Piledriver-powered FX chips, Zen-powered Ryzen chips ran cooler, much faster, and used less power. IPC uplift was eventually gauged to be 52% higher than Excavator, which was two full generations ahead of the architecture still being used in AMD's FX-series desktop predecessors like the FX-8350 and FX-8370.[1] Power consumption and heat were found to be highly competitive with Intel, and the included Wraith coolers were generally competitive with higher-priced aftermarket solutions.

Ryzen's multi-threaded performance, in some cases while using Blender or other open-source software, was around four times the performance of the FX-8370.[57] One reviewer found that Ryzen chips would typically outperform competing Intel i7 processors for a fraction of the price when all eight cores were utilized.[57]

One complaint among a subset of reviewers, however, was that Ryzen processors fell behind their Intel counterparts when running older games, or running certain newer games at mainstream resolutions such as 720p or 1080p.[58] AMD acknowledged the gaming performance deficit at low resolutions during a Reddit "Ask Me Anything Q & A thread", where they explained that updates and patches were being developed.[59] Subsequent updates to Ashes of the Singularity: Escalation and Rise of the Tomb Raider increased frame rates 17−31% on Ryzen systems.[60][61] id Software announced in April 2017 it would be optimizing its future games to make use of the greater parallelism available on Ryzen CPUs.[62]

It has been suggested that low core utilization resulted in Ryzen processors being underutilized, therefore reflecting lower than expected scores, especially when coupled with the fact that Zen's slightly lower IPC relies on full core utilization.[63][64][65] However, AMD and others have argued thread scheduling is not the fundamental issue to Windows 10 performance.[66][67] There were also issues with AM4 motherboards and their BIOS, which was resulting in many Ryzen chips being underclocked, partially shut off, or generally hindered by BIOS bugs.[citation needed]

Known issues[edit]

Ryzen faced hard system locks when an application executes certain sequences of FMA3 instructions.[68] AMD stated in mid March 2017 that the issue would be fixed via new microcode included in UEFI updates from motherboard manufacturers.[citation needed]

Some early Ryzen processors produce segmentation faults on certain workloads on Linux.[69] AMD has offered to replace the affected processors with newer ones that are not affected by the problem.[70]

See also[edit]


  1. ^ a b c Cutress, Ian. "AMD Launches Ryzen: 52% More IPC, Eight Cores for Under $330, Pre-order Today, On Sale March 2nd". AnandTech. 
  2. ^ Cutress, Ian (13 December 2016). "AMD Gives More Zen Details: Ryzen, 3.4 GHz+, NVMe, Neural Net Prediction, & 25 MHz Boost Steps". AnandTech. 
  3. ^ https://www.amd.com/en-us/press-releases/Pages/amd-takes-computing-2016dec13.aspx
  4. ^ "New Horizon". 
  5. ^ a b "PassMark CPU Benchmarks - AMD vs Intel Market Share". www.cpubenchmark.net. Retrieved 2017-08-01. 
  6. ^ Cuttress, Ian (2017-03-02). "The AMD Zen and Ryzen 7 Review: A Deep Dive on 1800X, 1700X and 1700". AnandTech. p. 23. Retrieved 2017-09-04. 
  7. ^ a b c Cutress, Ian (2017-03-02). "The AMD Zen and Ryzen 7 Review: A Deep Dive on 1800X, 1700X and 17000". AnandTech. Retrieved 2017-03-16. 
  8. ^ Kampman, Jeff (2017-03-02). "AMD's Ryzen 7 ... CPUs reviewed". techreport.com. Retrieved 2017-03-03. 
  9. ^ "Gaming: Tips for Building a Better AMD Ryzen™ S... - Community". community.amd.com. 
  10. ^ "[PATCH] add znver1 processor". 
  11. ^ "AMD Ryzen 7 1800X och 7 1700X- Sweclockers". 
  12. ^ "AMD Ryzen 7 1800X Review - CPU-Z Screenshots & System". 
  13. ^ "The AMD Zen and Ryzen 7 review a deep dive on 1800X 1700X and 1700". 
  14. ^ "AMD Ryzen". AMD. 
  15. ^ "AMD Ryzen pre-order and release date revealed VS Intel - SlashGear". 
  16. ^ Singh, Karandeep (21 February 2017). "AMD Ryzen 7 Getting More Interesting, New Wraith RGB Coolers and Box Design Revealed - Racing Junky". 
  17. ^ Walton, Mark (2017-03-02). "AMD Ryzen 7 1800X still behind Intel, but it's great for the price". arstechnica.com. Retrieved 2017-03-03. 
  18. ^ Alcorn, Paul (2017-03-02). "AMD Ryzen 7 1800X CPU Review". tomshardware.com. Retrieved 2017-03-03. 
  19. ^ Verry, Tim (2017-03-04). "PSA: AMD XFR Enabled On All Ryzen CPUs, X SKUs Have Wider Range". PC Perspective. Retrieved 2017-03-04. 
  20. ^ a b "Processor Programming Reference (PPR) for AMD Family 17h Model 01h, Revision B1 Processors" (PDF). Processor Programming Reference (PPR) for AMD Family 17h Model 01h, Revision B1 Processors. AMD. Retrieved 14 July 2017. 
  21. ^ Hagedoorn, Hilbert (11 April 2017). "AMD Ryzen 5 1500X and 1600X review - The AMD Chipsets". Guru3D. Retrieved 4 August 2017. 
  22. ^ Kampman, Jeff (16 May 2017). "Ryzen Threadripper CPUs will offer 16 cores and 32 threads". Tech Report. Retrieved 16 May 2017. 
  23. ^ "AMD Unveils Expanding Set of High-Performance Products and Technologies Propelling Next Phase of Growth". Advanced Micro Devices, Inc. 2017-05-16. Archived from the original on 2017-05-17. Retrieved 2017-05-17. 
  24. ^ a b Cutress, Ian (13 July 2017). "AMD Threadripper 1920X and 1950X CPU Details". Anandtech. Retrieved 13 July 2017. 
  25. ^ a b c d e f Alcorn, Paul (30 July 2017). "Threadripper Lands August 10, AMD Unveils Pricing, Accessory Kit, New 8-Core Model". Tom's Hardware. Retrieved 1 August 2017. 
  26. ^ a b "AMD Ryzen™ Threadripper 1950X". 
  27. ^ a b "AMD Ryzen™ Threadripper 1920X". 
  28. ^ a b Manion, Wayne (30 May 2017). "ROG Zenith Extreme spills some beans on Ryzen Threadripper". Tech Report. Retrieved 30 May 2017. 
  29. ^ Shrout, Ryan (13 July 2017). "AMD Ryzen Threadripper 1950X and 1920X Announced: Flagship Performance at $999". PC Perspective. Retrieved 14 July 2017. 
  30. ^ Bright, Peter (13 July 2017). "AMD Threadripper—16 cores and 32 threads for $999–arrives in August". Ars Technica. Retrieved 4 August 2017. 
  31. ^ a b Cutress, Ian (30 July 2017). "AMD Threadripper 1950X and 1920X Out August 10th". Anandtech. Retrieved 31 July 2017. 
  32. ^ a b c d e "AMD announces Ryzen Threadripper 1900X on facebook". official Advanced Micro Devices, Inc. account on facebook. 2017-07-31. Retrieved 2017-07-31. 
  33. ^ Walton, Mark (2 March 2017). "AMD Ryzen 7 1800X still behind Intel, but it's great for the price". Ars Technica. Retrieved 4 August 2017. 
  34. ^ "AMD Ryzen 7 PRO 1700X". AMD. AMD. Retrieved 2 November 2017. 
  35. ^ a b c d e f Shilov, Anton (29 June 2017). "AMD Launches Ryzen PRO CPUs". Anandtech. Retrieved 29 June 2017. 
  36. ^ a b Linder, Brad (5 April 2017). "AMD Ryzen 3 1200 chip details leaked ahead of schedule". Liliputing. Retrieved 31 May 2017. 
  37. ^ a b Smith, Ryan (29 June 2017). "AMD Inadvertently Reveals Ryzen 3 1300 & 1200 Details". Anandtech. Retrieved 29 June 2017. 
  38. ^ a b Bright, Peter (13 July 2017). "AMD Threadripper—16 cores and 32 threads for $999–arrives in August". Ars Technica. Retrieved 13 July 2017. 
  39. ^ a b http://www.anandtech.com/show/11658/the-amd-ryzen-3-1300x-ryzen-3-1200-cpu-review
  40. ^ Frederiksen, Eric (30 May 2017). "Dell taps AMD for the Inspiron Gaming Desktop and new AIOs". Tech Report. Retrieved 30 May 2017. 
  41. ^ "We are AMD, creators of Athlon, Radeon and other famous microprocessors. We also power the Xbox One and PS4. Today we want to talk RYZEN, our new high-speed CPU five years in the making. We're celebrating with giveaways, and you can ask us anything! Special guest: AMD President and CEO Dr. Lisa Su". Reddit. Reddit. Retrieved 2 March 2017. 
  42. ^ Shrout, Ryan (18 May 2017). "AMD Teases Ryzen Mobile APUs with Zen CPU Cores and On-Die Vega Graphics". PC Perspective. Retrieved 2 June 2017. 
  43. ^ Shrout, Ryan (30 May 2017). "Computex 2017: AMD Demos Ryzen Mobile SoC with Vega Graphics". PC Perspective. Retrieved 2 June 2017. 
  44. ^ a b c Cutress, Ian (26 October 2017). "Ryzen Mobile is Launched". Anandtech. Retrieved 26 October 2017. 
  45. ^ a b "AMD Ryzen™ Mobile Processors with Radeon™ Vega Graphics | AMD". 2017-10-26. Retrieved 2017-10-28. 
  46. ^ Kampman, Jeff (26 October 2017). "AMD's Ryzen 7 2700U and Ryzen 5 2500U APUs revealed". Tech Report. Retrieved 26 October 2017. 
  47. ^ a b c "AMD Ryzen™ 5 2500U". Retrieved 2017-10-31. 
  48. ^ a b c "AMD Ryzen™ 7 2700U". Retrieved 2017-10-31. 
  49. ^ "Unofficial Patch Unblocks Windows 7 and 8.1 Updates for Kaby Lake, Ryzen - ExtremeTech". ExtremeTech. 2017-04-20. Retrieved 2017-09-03. 
  50. ^ "AMD: Sorry, there will be no official Ryzen drivers for Windows 7". PC World. IDG. Retrieved 23 April 2017. 
  51. ^ "Chipset". support.amd.com. Retrieved 2017-09-03. 
  52. ^ Chacos, Brad (13 March 2017). "Kernel 4.10 gives Linux support for AMD Ryzen multithreading". PC World. Retrieved 28 June 2017. 
  53. ^ Cutress, Ian (2 March 2017). "The AMD Zen and Ryzen 7 Review". Anandtech. Retrieved 23 June 2017. 
  54. ^ Kampman, Jeff (2 March 2017). "AMD's Ryzen 7 1800X, Ryzen 7 1700X, and Ryzen 7 1700 CPUs reviewed". Tech Report. Retrieved 23 June 2017. 
  55. ^ Shrout, Ryan (2 March 2017). "The AMD Ryzen 7 1800X Review: Now and Zen". PC Perspective. Retrieved 23 June 2017. 
  56. ^ "In Order For AMD Ryzen To Deliver In Performance AMD Needs Game Developers To Optimize Game Accordingly". 3 March 2017. 
  57. ^ a b "Ryzen review: AMD is back". 
  58. ^ "AMD Ryzen 7 1800X reviewed: Zen is an amazing workstation chip with a 1080p gaming Achilles heel - ExtremeTech". 2 March 2017. 
  59. ^ "Didn't Attend AMD's Ryzen Reddit AMA? Here's What You Missed! - Custom PC Review". 3 March 2017. 
  60. ^ Shrout, Ryan (29 March 2017). "Ashes of the Singularity Gets Ryzen Performance Update". PC Perspective. Retrieved 30 March 2017. 
  61. ^ Shrout, Ryan (30 May 2017). "Rise of the Tomb Raider Gets a Ryzen Performance Update". PC Perspective. Retrieved 31 May 2017. 
  62. ^ Killian, Zak (26 April 2017). "id software talks about Ryzen". Tech Report. Retrieved 26 April 2017. 
  63. ^ "AMD's Ryzen CPU Series will Need Modern Linux Kernel for Proper Support". 
  64. ^ "AMD: Ryzen CPU gaming performance inhibited by lack of optimization". 
  65. ^ "AMD Ryzen Performance Negatively Affected by Windows 10 Scheduler Bug". 8 March 2017. 
  66. ^ "AMD Ryzen™ Community Update". AMD. AMD. Retrieved 13 March 2017. 
  67. ^ Malventano, Allyn (10 March 2017). "Home » Reviews Feedback AMD Ryzen and the Windows 10 Scheduler - No Silver Bullet". PC Perspective. Retrieved 13 March 2017. 
  68. ^ "AMD Confirms It's Issuing a Fix To Stop New Ryzen Processors From Crashing Desktops - Slashdot". hardware.slashdot.org. 
  69. ^ AMD Confirms Linux Performance Marginality Problem Affecting Some, Doesn't Affect Epyc / TR
  70. ^ [1]

External links[edit]