Zen+ (original) (raw)

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2018 AMD 12-nanometre processor microarchitecture

AMD Zen+

General information
Launched April 2018
Designed by AMD
Common manufacturer GlobalFoundries
CPUID code Family 17h
Cache
L1 cache 64 KB instruction, 32 KB data per core
L2 cache 512 KB per core
L3 cache 8 MB per CCX (APU: 4 MB)
Architecture and classification
Technology node 12 nm (FinFET)
Instruction set AMD64 (x86-64)
Physical specifications
Transistors 4.8 billion per 8-core "Zeppelin" die
Cores 4–6 (mainstream)8 (performance)12–32 (enthusiast)[1]
Sockets Socket AM4Socket TR4
Products, models, variants
Product code names Pinnacle Ridge (Desktop)[2]Colfax (HEDT)[1]Picasso (APU/Embedded)
Brand names RyzenRyzen ThreadripperAthlon
History
Predecessor Zen (1st gen)
Successor Zen 2
Support status
Supported

Zen+ is the name for a computer processor microarchitecture by AMD. It is the successor to the first gen Zen microarchitecture,[3] and was 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).

Die shot of Ryzen 5-2600

An AMD Ryzen 5 2600

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 (which would have been significantly more work and thus more expensive).[7] These process optimizations allowed 12 nm Zen+ to clock about +250 MHz (≈6%) higher, or to lower power consumption when at the same frequency by 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 compared to just 2666 MHz on the prior Zen core),[10] and fixed many hardware bugs found on Zen 1, such as fTPM / PSP bugs on Zen 1, and SVM / SLAT bugs on Zen 1.

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]

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APU features table

Common features of Ryzen 2000 desktop CPUs:

Branding and Model Cores(threads) Clock rate (GHz) L3 cache(total) TDP Coreconfig[i] Releasedate Launchprice[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

  2. ^ Manufacturer suggested retail price at launch

  3. ^ a b c Model also available as PRO version as 2600[14], 2700[15], 2700X[16], released on September 19, 2018.

  4. ^ 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).

Common features of Ryzen 2000 HEDT CPUs:

Branding and Model Cores(threads) Clock rate (GHz) L3 cache(total) TDP Chiplets Coreconfig[i] Releasedate Launchprice[a]
Base PB2
RyzenThreadripper 2990WX[22] 32 (64) 3.0 4.2 64 MB 250 W 4 × CCD 8 × 4 Aug 13, 2018 US $1799
2970WX[22] 24 (48) 8 × 3 Oct 2018 US $1299
2950X[22] 16 (32) 3.5 4.4 32 MB 180 W 2 × CCD 4 × 4 Aug 31, 2018 US $899
2920X[22] 12 (24) 4.3 4 × 3 Oct 2018 US $649

  1. ^ Manufacturer suggested retail price at launch

  2. ^ Core Complexes (CCX) × cores per CCX

Common features of Zen+ based desktop APUs:

Model CPU GPU TDP Releasedate Release price
Cores(threads) Clock rate (GHz) L3 cache(total) Model[i] Config[ii] Clock(MHz) Processingpower(GFLOPS)[iii]
Base Boost
Athlon Pro 300GE 2 (4) 3.4 — 4 MB Vega 3 192:12:43 CU 1100 424.4 35 W Sep 30, 2019 OEM
Athlon Silver Pro 3125GE RadeonGraphics 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 8 512:32:168 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[26]
Ryzen 3 Pro 3200G Sep 30, 2019 OEM
Ryzen 5 Pro 3350GE 3.3 3.9 RadeonGraphics 640:40:1610 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 11 704:44:1611 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[26]
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).[23][24][25]
  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.

Common features of Ryzen 3000 notebook APUs:

Branding and Model CPU GPU TDP Releasedate
Cores(threads) Clock rate (GHz) L3 cache(total) Coreconfig[i] Model Clock(GHz) Config[ii] Processingpower(GFLOPS)[iii]
Base Boost
Ryzen 7 3780U[27] 4 (8) 2.3 4.0 4 MB 1 × 4 RX Vega 11 1.4 704:44:1611 CU 1971.2 15 W Oct 2019
3750H[28] RX Vega 10 640:40:1610 CU[29] 1792.0 35 W Jan 6, 2019
3700C[30] 15 W Sep 22, 2020
3700U[a][31] Jan 6, 2019
Ryzen 5 3580U[32] 2.1 3.7 Vega 9 1.3 576:36:169 CU 1497.6 Oct 2019
3550H[33] Vega 8 1.2 512:32:168 CU[34] 1228.8 35 W Jan 6, 2019
3500C[35] 15 W Sep 22, 2020
3500U[a][36] Jan 6, 2019
3450U[37] 3.5 Jun 2020
Ryzen 3 3350U[38] 4 (4) Vega 6 384:24:86 CU[39] 921.6 Jan 6, 2019
3300U[a][40]

  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.

  4. ^ a b c Model also available as PRO version[41][42][43], released April 8, 2019.

In 2022, AMD announced the R2000 series of embedded APUs.[44]

Model Releasedate Fab CPU GPU Socket PCIesupport Memory support TDP
Cores(threads) Clock rate (GHz) Cache Archi- tecture Config[i] Clock(GHz) Processingpower[ii](GFLOPS)
Base Boost L1 L2 L3
R2312[45] June 7, 2022[46] GloFo12LP 2 (4) 2.7 3.5 64 KB inst.32 KB dataper core 512 KBper core 4 MB GCN 5 192:12:43 CU 1.2 460.8 FP5 8 lanesGen 3 DDR4-2400dual-channel ECC 10–25 W
R2314[45] 4 (4) 2.1 384:24:86 CU 921.6 16 lanesGen 3 DDR4-2666dual-channel ECC 10–35 W
  1. ^ Unified Shaders : Texture Mapping Units : Render Output Units and Compute Units (CU)
  2. ^ Single-precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.
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