Zen+

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).

AMD Zen+

General information
Launched	April 2018
Designed by	AMD
Common manufacturer(s)	GlobalFoundries
Cache
L1 cache	64 KiB instruction, 32 KiB data per core
L2 cache	512 KiB per core
L3 cache	8 MiB per quad-core CCX
Physical specifications
Transistors	12 nm (FinFET)
Cores	4-6 (mainstream) 8 (performance) 12-32 (enthusiast)[1]
Socket(s)	Socket AM4 Socket TR4
Products, models, variants
Product code name(s)	Pinnacle Ridge (Desktop)[2] Colfax (HEDT)[1] Picasso (APU/Embedded)
Brand name(s)	Ryzen Ryzen Threadripper
History
Predecessor	Zen (1st gen)
Successor	Zen 2

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

Model	Release date and price	Fab	Chiplets	Cores (threads)	Core Config[lower-roman 1]	Clock rate (GHz)		Cache			Socket	PCIe lanes[lower-roman 2]	Memory support	TDP
						Base	PB2	L1	L2	L3
Entry-level
Ryzen 3 1200 AF (12 nm refresh)[14]	April, 2020 US $60	GloFo 12LP (14LP+)	1 × CCD	4 (4)	2 × 2	3.1	3.4	64 KiB inst. 32 KiB data per core	512 KiB per core	2 × 4 MiB per CCX	AM4	24 (16+4+4)	DDR4-2933 dual-channel	65 W
Ryzen 3 2300X [15]	September 10, 2018 OEM				1 × 4	3.5	4.0			8 MiB
Mainstream
Ryzen 5 2500X [16]	September 10, 2018 OEM	GloFo 12LP (14LP+)	1 × CCD	4 (8)	1 × 4	3.6	4.0	64 KiB inst. 32 KiB data per core	512 KiB per core	8 MiB	AM4	24 (16+4+4)	DDR4-2933 dual-channel	65 W
Ryzen 5 2600E [17]	September 2018 OEM			6 (12)	2 × 3	3.1	4.0			2 × 8 MiB per CCX			DDR4-2667 dual-channel	45 W
Ryzen 5 1600 AF (12 nm refresh)[18]	October 11, 2019 US $85					3.2	3.6						DDR4-2933 dual-channel	65 W
Ryzen 5 2600 [19]	April 19, 2018 US $199					3.4	3.9
Ryzen 5 2600X [20]	April 19, 2018 US $229					3.6	4.2							95 W
	November 23, 2018 UK £221.99
Performance
Ryzen 7 2700E [21]	September 11, 2018 OEM	GloFo 12LP (14LP+)	1 × CCD	8 (16)	2 × 4	2.8	4.0	64 KiB inst. 32 KiB data per core	512 KiB per core	2 × 8 MiB per CCX	AM4	24 (16+4+4)	DDR4-2667 dual-channel	45 W
Ryzen 7 2700 [22]	April 19, 2018 US $299					3.2	4.1						DDR4-2933 dual-channel	65 W
	November 23, 2018 UK £285.49
Ryzen 7 Pro 2700 [23]	April 2018 OEM					3.2	4.1
Ryzen 7 Pro 2700X [24]	September 6, 2018 OEM					3.6	4.1							95 W
Ryzen 7 2700X [25]	April 19, 2018 US $329					3.7	4.3							105 W
High-end desktop (HEDT)
Ryzen Threadripper 2920X [26]	October 2018 US $649	GloFo 12LP (14LP+)	2 × CCD	12 (24)	4 × 3	3.5	4.3	64 KiB inst. 32 KiB data per core	512 KiB per core	4 × 8 MiB per CCX	TR4	64 (60+4)	DDR4-2933 quad-channel	180 W
Ryzen Threadripper 2950X [27]	August 31, 2018 US $899			16 (32)	4 × 4	3.5	4.4
Ryzen Threadripper 2970WX [28]	October 2018 US $1299		4 × CCD	24 (48)	8 × 3	3.0	4.2			8 × 8 MiB per CCX				250 W
Ryzen Threadripper 2990WX [29]	August 13, 2018 US $1799			32 (64)	8 × 4	3.0	4.2

1. Active Core Complexes (CCX) × Active cores per CCX.
2. PCIe lane count includes 4 lanes used for connectivity to the chipset.[13]

Desktop APUs

Model	Release Date & Price	Fab	CPU						GPU				Socket	PCIe lanes	Memory support	TDP	Part Number
			Cores (threads)	Clock rate (GHz)		Cache			Model	Config[lower-roman 1]	Clock	Processing power (GFLOPS)[lower-roman 2]
				Base	Boost	L1	L2	L3
Athlon Pro 300GE[30]	September 30, 2019 OEM	12 nm	2 (4)	3.4	N/A	64 KiB inst. 32 KB data per core	512 KiB per core	4 MiB	Vega 3	192:12:4 3 CU	1100 MHz	424.4	AM4	16 (8+4+4)	DDR4-2667 dual-channel	35 W	YD300BC6M2OFH
Athlon Silver Pro 3125GE[31]	July 21, 2020 OEM																YD3125C6M2OFH
Athlon Gold 3150GE[32]			4 (4)	3.3	3.8										DDR4-2933 dual-channel		YD3150C6M4MFH
Athlon Gold Pro 3150GE[33]																	YD315BC6M4MFH
Athlon Gold 3150G[34]				3.5	3.9											45-65 W	YD3150C5M4MFH
Athlon Gold Pro 3150G[35]																	YD315BC5M4MFH
Ryzen 3 3200GE[36]	July 7, 2019 OEM			3.3	3.8				Vega 8	512:32:16 8 CU	1200 MHz	1228.8				35 W	YD3200C6M4MFH
Ryzen 3 Pro 3200GE[37]	September 30, 2019 OEM																YD320BC6M4MFH
Ryzen 3 3200G[38]	July 7, 2019 US $99			3.6	4.0						1250 MHz	1280				45-65 W	YD3200C5M4MFH
Ryzen 3 Pro 3200G[39]	September 30, 2019 OEM																YD320BC5M4MFH
Ryzen 5 3350GE	July 21, 2020 OEM		4 (8)	3.3	3.9				RX Vega 11	704:44:16 11 CU	1200 MHz					35 W	YD3350C6M4MFH
Ryzen 5 Pro 3350GE[40]																	YD335BC6M4MFH
Ryzen 5 3350G				3.6	4.0						1300 MHz	1830.4				45-65 W	YD3350C5M4MFH
Ryzen 5 Pro 3350G[41]																	YD335BC5M4MFH
Ryzen 5 3400GE[42]	July 7, 2019 OEM			3.3	4.0											35 W	YD3400C6M4MFH
Ryzen 5 Pro 3400GE[43]	September 30, 2019 OEM																YD340BC6M4MFH
Ryzen 5 3400G[44]	July 7, 2019 US $149			3.7	4.2						1400 MHz	1971.2				45-65 W	YD3400C5M4MFH
Ryzen 5 Pro 3400G[45]	September 30, 2019 OEM																YD340BC5M4MFH

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.

Mobile

Model	Release date	Process	CPU						GPU				Memory support	TDP	Part number
			Cores (threads)	Clock rate (GHz)		Cache[lower-roman 1]			Model	Config[lower-roman 2]	Clock	Processing power (GFLOPS)[lower-roman 3]
				Base	Boost	L1	L2	L3
Ryzen 3 3300U[47]	January 6, 2019	GloFo 12LP (14LP+)	4 (4)	2.1	3.5	64 KB inst. 32 KB data per core	512 KB per core	4 MB	Vega 6	384:24:8 6 CU[48]	1200 MHz	921.6	DDR4-2400 dual-channel	15 W	YM3300C4T4MFG
Ryzen 3 PRO 3300U[49]	April 8, 2019														YM330BC4T4MFG
Ryzen 5 3450U[50]	June 2020		4 (8)						Vega 8	512:32:16 8 CU[51]		1228.8			YM3450C4T4MFG
Ryzen 5 3500U[52]	January 6, 2019				3.7										YM3500C4T4MFG
Ryzen 5 PRO 3500U[53]	April 8, 2019														YM350BC4T4MFG
Ryzen 5 3500C[54]	September 22, 2020														YM350CC4T4MFG
Ryzen 5 3550H[55]	January 6, 2019													35 W	YM3500C4T4MFG
Ryzen 5 3580U[56]	October 2019								Vega 9	576:36:16 9 CU	1300 MHz	1497.6		15 W
Ryzen 7 3700U[57]	January 6, 2019			2.3	4.0				Vega 10	640:40:16 10 CU[58]	1400 MHz	1792.0			YM3700C4T4MFG
Ryzen 7 PRO 3700U[59]	April 8, 2019														YM370BC4T4MFG
Ryzen 7 3700C[60]	September 22, 2020														YM370CC4T4MFG
Ryzen 7 3750H[61]	January 6, 2019													35 W	YM3700C4T4MFG
Ryzen 7 3780U[62]	October 2019								Vega 11	704:44:16 11 CU		1971.2		15 W

1. AMD defines 1 kilobyte (KB) as 1024 bytes, and 1 megabyte (MB) as 1024 kilobytes.[46]
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.

Gallery

• 
  Amd EPYC 7302 without carrier
• 
  Amd EPYC 7302 with carrier
• 
  Amd EPYC 7302 bottom side with carrier
• 
  Inside a Zen processor. Zen+ processors are similar.[63]

See also

• AMD K9
• AMD K10
• Jim Keller (engineer)
• Ryzen
• Steamroller (microarchitecture)
• Zen (microarchitecture)
• Zen 2

References

1. 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. 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. Hagedoorn, Hilbert (11 April 2017). "AMD Ryzen 5 1500X and 1600X review – The AMD Chipsets". Guru3D. Retrieved 4 August 2017.
14. "AMD Ryzen™ 3 1200AF 12nm Processor". Tom's Hardware.
15. "AMD Ryzen™ 3 2300X Processor". AMD.
16. "AMD Ryzen™ 5 2500X Processor". AMD.
17. "AMD Ryzen™ 5 2600E Processor". AMD.
18. "AMD Ryzen 5 1600 AF CPU Review & Benchmarks: Best CPU Under $100 in 2020".
19. "AMD Ryzen 5 2600 Processor". AMD.
20. "AMD Ryzen™ 5 2600X Processor". AMD.
21. "AMD Ryzen™ 7 2700E Processor". AMD.
22. "AMD Ryzen™ 7 2700 Processor". AMD.
23. "AMD Ryzen™ 7 PRO 2700 Processor". AMD.
24. "AMD Ryzen™ 7 PRO 2700X Processor". AMD.
25. "AMD Ryzen™ 7 2700X Processor". AMD.
26. "AMD Ryzen™ Threadripper 2920X Processor". AMD.
27. "AMD Ryzen™ Threadripper 2950X Processor". AMD.
28. "AMD Ryzen™ Threadripper 2970WX Processor". AMD.
29. "AMD Ryzen™ Threadripper 2990WX Processor". AMD.
30. "AMD Athlon™ PRO 300GE".
31. "AMD Athlon™ Silver PRO 3125GE".
32. "AMD Athlon™ Gold 3150GE".
33. "AMD Athlon™ Gold PRO 3150GE".
34. "AMD Athlon™ Gold 3150G".
35. "AMD Athlon™ Gold PRO 3150G".
36. "AMD Ryzen™ 3 3200GE".
37. "AMD Ryzen™ 3 PRO 3200GE".
38. "AMD Ryzen™ 3 3200G with Radeon™ Vega 8 Graphics".
39. "AMD Ryzen™ 3 PRO 3200G".
40. "AMD Ryzen™ 5 PRO 3350GE".
41. "AMD Ryzen™ 5 PRO 3350G".
42. "AMD Ryzen™ 5 3400GE".
43. "AMD Ryzen™ 5 PRO 3400GE".
44. "AMD Ryzen™ 5 3400G".
45. "AMD Ryzen™ 5 3400G".
46. "Processor Programming Reference (PPR) for AMD Family 17h Model 01h, Revision B1 Processors" (PDF). AMD Technical Documentation. AMD Developer Central: Advanced Micro Devices, Inc. 2017-04-15. p. 25. Retrieved 2019-11-01.
47. "AMD Ryzen™ 3 3300U Mobile Processor with Radeon™ Vega 6 Graphics". Retrieved 2019-01-06.
48. "AMD Radeon Vega 6 Mobile Specs | TechPowerUp GPU Database". Techpowerup.com.
49. "AMD Ryzen™ 3 PRO 3300U Mobile Processor with Radeon™ Vega 6 Graphics".
50. "AMD Ryzen™ 5 3450U Processor".
51. "AMD Radeon Vega 8 Specs | TechPowerUp GPU Database". Techpowerup.com.
52. "AMD Ryzen™ 5 3500U Mobile Processor with Radeon™ Vega 8 Graphics".
53. "AMD Ryzen™ 5 PRO 3500U Mobile Processor with Radeon™ Vega 8 Graphics".
54. "AMD Ryzen™ 5 3500C".
55. "AMD Ryzen™ 5 3550H Mobile Processor with Radeon™ Vega 8 Graphics". Retrieved 8 January 2018.
56. "AMD Ryzen™ 5 3580U Microsoft Surface® Edition".
57. "AMD Ryzen™ 7 3700U Mobile Processor with Radeon™ RX Vega 10 Graphics".
58. "AMD Radeon RX Vega 10 Mobile Specs | TechPowerUp GPU Database". Techpowerup.com.
59. "AMD Ryzen™ 7 PRO 3700U Mobile Processor with Radeon™ Vega 10 Graphics".
60. "AMD Ryzen™ 7 3700C".
61. "AMD Ryzen™ 7 3750H Mobile Processor with Radeon™ RX Vega 10 Graphics".
62. "AMD Ryzen™ 7 3780U Microsoft Surface® Edition".
63. https://www.overclock3d.net/news/cpu_mainboard/der8auer_has_successfully_delidded_a_zen_ryzen_2000_series_cpu/1