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AMD Zen+
General information
LaunchedApril 2018
Designed byAMD
Common manufacturer
Cache
L1 cache64 KiB instruction, 32 KiB data per core
L2 cache512 KiB per core
L3 cache8 MiB per quad-core CCX
Physical specifications
Transistors
Cores
    • 4-6 (mainstream)
    • 8 (performance)
    • 12-32 (enthusiast)[1]
Sockets
Products, models, variants
Product code names
  • Pinnacle Ridge (Desktop)[2]
  • Colfax (HEDT)[1]
  • Picasso (APU/Embedded)
Brand name
History
PredecessorZen (1st gen)
SuccessorZen 2

Zen+ is the codename for a computer processor microarchitecture by AMD. It is the successor to the first gen Zen microarchitecture,[3] first released in April 2018,[4] powering the second generation of Ryzen processors, known as Ryzen 2000 for mainstream desktop systems, Threadripper 2000 for high-end desktop setups and Ryzen 3000G (instead of 2000G) for accelerated processing units (APUs).

Features

Die shot of Ryzen 5-2600
Amd EPYC 7302 in a socket

Zen+ uses GlobalFoundries' 12 nm fabrication process,[5] an optimization of the 14 nm process used for Zen, with only minor design rule changes.[6] This means that the die sizes between Zen and Zen+ are identical as AMD chose to use the new smaller transistors to increase the amount of empty space, or "dark silicon", between the various features on the die. This was done to improve power efficiency & reduce thermal density to allow for higher clock speeds, rather than design an entirely new floorplan for a physically smaller die.[7] These process optimizations allowed 12 nm Zen+ to clock about +250 MHz (≈6%) higher, while also lowering power consumption when at the same frequency by over 10%, when compared to their prior 14 nm Zen products.[8] Although conversely at the microarchitecture level, Zen+ had only minor revisions versus Zen.[6] Known changes to the microarchitecture include improved clock speed regulation in response to workload ("Precision Boost 2"),[9] reduced cache and memory latencies (some significantly so), increased cache bandwidth, and finally improved IMC performance allowing for better DDR4 memory support (officially JEDEC rated to support up to 2933 MHz versus just 2666 MHz for Zen).[10]

Zen+ also supports improvements in the per-core clocking features, based on core utilization and CPU temperatures.[6] These changes to the core utilization, temperature, and power algorithms are branded as "Precision Boost 2" and "XFR2" ("eXtended Frequency Range 2"), evolutions of the first-generation technologies in Zen. On Zen, XFR gave an additional 50 to 200 MHz clock speed increase (in 25 MHz increments) over the maximum Precision Boost clocks. For Zen+, XFR2 is no longer listed as a separate clock modifier. Instead, the XFR temperature, power, and clock monitoring and logic feeds into the Precision Boost 2 algorithm to adjust clocks and power consumption opportunistically and dynamically.[11][12]

Ultimately, the changes in Zen+ resulted in a 3% improvement in IPC over Zen; which in conjunction with 6% higher clock speeds resulted in up to 10% overall increase in performance.[6]

Feature tables

CPUs

CPU features table

APUs

APU features table

Products

Desktop CPUs

Common features of Ryzen 2000 desktop CPUs:

  • Socket: AM4.
  • All the CPUs support DDR4-2933 in dual-channel mode, except for R7 2700E, R5 2600E, R5 1600AF and R3 1200AF which support it at DDR4-2666 speeds.
  • All the CPUs support 24 PCIe 3.0 lanes. 4 of the lanes are reserved as link to the chipset.
  • No integrated graphics.
  • L1 cache: 96 KB (32 KB data + 64 KB instruction) per core.
  • L2 cache: 512 KB per core.
  • Fabrication process: GlobalFoundries 12LP (14LP+).
Branding and Model Cores
(threads) 		Clock rate (GHz) L3 cache
(total) 		TDP Core
config[i] 		Release
date 		Launch
price[a]
Base PB2
Ryzen 7 2700X[13][b] 8 (16) 3.7 4.3 16 MB 105 W 2 × 4 April 19, 2018 US $329
2700[13][b] 3.2 4.1 65 W US $299
2700E 2.8 4.0 45 W September 19, 2018 OEM
Ryzen 5 2600X[13] 6 (12) 3.6 4.2 95 W 2 × 3 April 19, 2018 US $229
2600[13][b] 3.4 3.9 65 W US $199
2600E 3.1 4.0 45 W September 19, 2018 OEM
1600 (AF)[17][c] 3.2 3.6 65 W October 11, 2019[18] US $85
2500X 4 (8) 3.6 4.0 8 MB 1 × 4 September 10, 2018 OEM
Ryzen 3 2300X 4 (4) 3.5
1200 (AF)[19][c] 3.1 3.4 April 21, 2020 US $60
  1. ^ Core Complexes (CCX) × cores per CCX
  1. ^ Manufacturer suggested retail price at launch
  2. ^ a b c Model also available as PRO version as 2600[14], 2700[15], 2700X[16], released on September 19, 2018.
  3. ^ a b AF models are 12 nm Zen+ refresh of 14 nm Zen models (1200[20] and 1600[21] with "AF" instead of "AE" in the part numbers).

Desktop APUs

Common features of Zen+ based desktop APUs:

  • Socket: AM4.
  • All the CPUs support DDR4-2933 in dual-channel mode, while Athlon Pro 300GE and Athlon Silver Pro 3125GE support only DDR4-2666.
  • L1 cache: 96 KB (32 KB data + 64 KB instruction) per core.
  • L2 cache: 512 KB per core.
  • All the CPUs support 16 PCIe 3.0 lanes.
  • Includes integrated GCN 5th generation GPU.
  • Fabrication process: GlobalFoundries 12LP.
Model CPU GPU TDP Release
date 		Release
price
Cores
(threads) 		Clock rate (GHz) L3 cache
(total) 		Model[i] Config[ii] Clock
(MHz) 		Processing
power
(GFLOPS)[iii]
Base Boost
Athlon Pro 300GE 2 (4) 3.4 — 4 MB Vega 3 192:12:4
3 CU 		1100 424.4 35 W Sep 30, 2019 OEM
Athlon Silver Pro 3125GE Radeon
Graphics 		Jul 21, 2020
Athlon Gold 3150GE 4 (4) 3.3 3.8
Athlon Gold Pro 3150GE
Athlon Gold 3150G 3.5 3.9 65 W
Athlon Gold Pro 3150G
Ryzen 3 3200GE 3.3 3.8 Vega 8 512:32:16
8 CU 		1200 1228.8 35 W Jul 7, 2019
Ryzen 3 Pro 3200GE Sep 30, 2019
Ryzen 3 3200G 3.6 4.0 1250 1280 65 W Jul 7, 2019 US $99[25]
Ryzen 3 Pro 3200G Sep 30, 2019 OEM
Ryzen 5 Pro 3350GE 3.3 3.9 Radeon
Graphics 		640:40:16
10 CU 		1200 1536 35 W Jul 21, 2020
Ryzen 5 Pro 3350G 4 (8) 3.6 4.0 1300 1830.4 65 W
Ryzen 5 3400GE 3.3 Vega 11 704:44:16
11 CU 		35 W Jul 7, 2019
Ryzen 5 Pro 3400GE Sep 30, 2019
Ryzen 5 3400G 3.7 4.2 RX Vega 11 1400 1971.2 65 W Jul 7, 2019 US $149[25]
Ryzen 5 Pro 3400G Vega 11 Sep 30, 2019 OEM
  1. ^ Starting with 2020 releases, AMD stopped referring to integrated graphics as "Vega", therefore all Vega based iGPUs are branded as AMD Radeon Graphics (instead Radeon Vega 3 or Radeon Vega 10).[22][23][24]
  2. ^ Unified shaders : Texture mapping units : Render output units and Compute units (CU)
  3. ^ Single-precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.

Mobile

Common features of Ryzen 3000 notebook APUs:

Branding and Model CPU GPU TDP Release
date
Cores
(threads) 		Clock rate (GHz) L3 cache
(total) 		Core
config[i] 		Model Clock
(GHz) 		Config[ii] Processing
power
(GFLOPS)[iii]
Base Boost
Ryzen 7 3780U[26] 4 (8) 2.3 4.0 4 MB 1 × 4 RX Vega 11 1.4 704:44:16
11 CU 		1971.2 15 W Oct 2019
3750H[27] RX Vega 10 640:40:16
10 CU[28] 		1792.0 35 W Jan 6, 2019
3700C[29] 15 W Sep 22, 2020
3700U[a][30] Jan 6, 2019
Ryzen 5 3580U[31] 2.1 3.7 Vega 9 1.3 576:36:16
9 CU 		1497.6 Oct 2019
3550H[32] Vega 8 1.2 512:32:16
8 CU[33] 		1228.8 35 W Jan 6, 2019
3500C[34] 15 W Sep 22, 2020
3500U[a][35] Jan 6, 2019
3450U[36] 3.5 Jun 2020
Ryzen 3 3350U[37] 4 (4) Vega 6 384:24:8
6 CU[38] 		921.6 Jan 6, 2019
3300U[a][39]
  1. ^ Core Complexes (CCX) × cores per CCX
  2. ^ Unified Shaders : Texture Mapping Units : Render Output Units and Compute Units (CU)
  3. ^ Single precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
  1. ^ a b c Model also available as PRO version[40][41][42], released April 8, 2019.
  • Amd EPYC 7302 without carrier
    Amd EPYC 7302 without carrier
  • Amd EPYC 7302 with carrier
    Amd EPYC 7302 with carrier
  • Amd EPYC 7302 bottom side with carrier
    Amd EPYC 7302 bottom side with carrier
  • Inside a Zen processor. Zen+ processors are similar.[43]
    Inside a Zen processor. Zen+ processors are similar.[43]

See also

Wikimedia Commons has media related to Zen microarchitecture.

References

  1. ^ a b Cutress, Ian (5 June 2018). "AMD Reveals Threadripper 2". Anandtech. Retrieved 6 June 2018.
  2. ^ Alcorn, Paul (13 April 2018). "AMD Announces 2nd Generation Ryzen 7 & 5 CPUs: Pricing, Pre-Orders". Tom's Hardware. Retrieved 13 April 2018.
  3. ^ Cutress, Ian (8 January 2018). "AMD Tech Day at CES". Anandtech. Retrieved 8 January 2018.
  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. ^ "AMD Will Use 'New' GlobalFoundries 12nm Node for Future CPUs, GPUs". ExtremeTech. 2017-09-22. Retrieved 2018-02-04.
  6. ^ a b c d Cutress, Ian (19 April 2018). "The AMD 2nd Gen Ryzen Deep Dive: The 2700X, 2700, 2600X, and 2600 Tested". Anandtech. Retrieved Nov 30, 2018.
  7. ^ Cutress, Ian (19 April 2018). "The AMD 2nd Gen Ryzen Deep Dive: The 2700X, 2700, 2600X, and 2600 Tested". Anandtech. Retrieved 18 July 2020.
  8. ^ Kampman, Jeff (8 January 2018). "AMD lays out its Ryzen and Radeon plans for 2018 and beyond at CES". Tech Report. Retrieved 8 January 2018.
  9. ^ Leather, Anthony (7 January 2018). "AMD Confirms New Zen+ Ryzen CPUs For April 2018: X470 Chipset, Threadripper And APUs Inbound Too". Forbes. Retrieved 9 January 2018.
  10. ^ Mah Ung, Gordon (7 January 2018). "AMD reveals Ryzen 2, Threadripper 2, 7nm Navi, and more in CES blockbuster". PC World. Retrieved 9 January 2018.
  11. ^ Bennett, Kyle (1 May 2018). "Precision Boost Overdrive and XFR Enhanced Confusion". HardOCP. Retrieved 13 August 2018.
  12. ^ AMD (14 April 2018). "2nd Gen AMD Ryzen Processors: XFR 2 and Precision Boost 2". YouTube. Retrieved 13 August 2018.
  13. ^ a b c d "AMD announces Ryzen 2000 "Pinnacle Ridge" Series". VideoCardz.net. 13 April 2018. Retrieved 14 May 2024.
  14. ^ "AMD Ryzen 5 PRO 2600 Processor". AMD.
  15. ^ "AMD Ryzen 7 PRO 2700 Processor". AMD.
  16. ^ "AMD Ryzen 7 PRO 2700X Processor". AMD.
  17. ^ Alcorn, Paul (20 December 2019). "That's Ryzen AF: Some Old AMD Chips Might Be Getting a 12nm Makeover". Tom's Hardware. Retrieved 14 May 2024.
  18. ^ "AMD Ryzen 5 1600AF Specs | TechPowerUp CPU Database". TechPowerUp. Retrieved 14 May 2024.
  19. ^ "AMD Ryzen 3 1200AF 12nm Processor". Tom's Hardware.
  20. ^ "AMD Ryzen 3 1200". AMD. Retrieved October 9, 2022.
  21. ^ "AMD Ryzen 5 1600". AMD. Retrieved October 9, 2022.
  22. ^ "AMD Athlon Desktop Processors with Radeon Graphics". AMD. Archived from the original on 2020-07-29. Retrieved November 16, 2023.
  23. ^ "AMD Athlon PRO Desktop Processor". AMD. Archived from the original on 2020-07-29. Retrieved November 16, 2023.
  24. ^ "AMD Ryzen PRO Desktop Processor". AMD. Archived from the original on 2020-07-29. Retrieved November 16, 2023.
  25. ^ a b Cutress, Dr.Ian (June 10, 2019). "AMD Ryzen 3000 APUs: Up to Vega 11, More MHz, Under $150, Coming July 7th". AnandTech. Retrieved November 16, 2023.
  26. ^ "AMD Ryzen 7 3780U Microsoft Surface® Edition".
  27. ^ "AMD Ryzen 7 3750H Mobile Processor with Radeon RX Vega 10 Graphics".
  28. ^ "AMD Radeon RX Vega 10 Mobile Specs | TechPowerUp GPU Database". Techpowerup.com.
  29. ^ "AMD Ryzen 7 3700C".
  30. ^ "AMD Ryzen 7 3700U Mobile Processor with Radeon RX Vega 10 Graphics".
  31. ^ "AMD Ryzen 5 3580U Microsoft Surface® Edition".
  32. ^ "AMD Ryzen 5 3550H Mobile Processor with Radeon Vega 8 Graphics". Retrieved 8 January 2018.
  33. ^ "AMD Radeon Vega 8 Specs | TechPowerUp GPU Database". Techpowerup.com.
  34. ^ "AMD Ryzen 5 3500C".
  35. ^ "AMD Ryzen 5 3500U Mobile Processor with Radeon Vega 8 Graphics".
  36. ^ "AMD Ryzen 5 3450U Processor".
  37. ^ "AMD Ryzen 3 3350U". AMD.
  38. ^ "AMD Radeon Vega 6 Mobile Specs | TechPowerUp GPU Database". Techpowerup.com.
  39. ^ "AMD Ryzen 3 3300U Mobile Processor with Radeon Vega 6 Graphics". Retrieved 2019-01-06.
  40. ^ "AMD Ryzen 3 PRO 3300U Mobile Processor with Radeon Vega 6 Graphics".
  41. ^ "AMD Ryzen 5 PRO 3500U Mobile Processor with Radeon Vega 8 Graphics".
  42. ^ "AMD Ryzen 7 PRO 3700U Mobile Processor with Radeon Vega 10 Graphics".
  43. ^ https://www.overclock3d.net/news/cpu_mainboard/der8auer_has_successfully_delidded_a_zen_ryzen_2000_series_cpu/1
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