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Ryzen Threadripper 3960X
General Info
Designer	AMD
Manufacturer	TSMC, GlobalFoundries
Model Number	3960X
Part Number	100-000000010, 100-100000010WOF
Market	Desktop
Introduction	November 7, 2019 (announced) November 25, 2019 (launched)
Release Price	$1,399.00
Shop	Amazon
General Specs
Family	Ryzen Threadripper
Series	3900
Locked	No
Frequency	3,800 MHz
Turbo Frequency	4,500 MHz
Bus rate	8 × 16 GT/s
Clock multiplier	38
CPUID	0x00830F10
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Zen 2
Chipset	TRX40
Core Name	Castle Peak
Core Family	23
Core Model	49
Core Stepping	B0
Process	7 nm, 12 nm
Transistors	23,540,000,000
Technology	CMOS
MCP	Yes (5 dies)
Word Size	64 bit
Cores	24
Threads	48
Max Memory	256 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	280 W
TDP (Typical)	267 W
Tjunction	0 °C – 68 °C
Packaging
Package	sTRX4, FCLGA-4094 (FC-OLGA)
Dimension	75.4 mm × 58.5 mm × 6.26 mm
Pitch	0.87 mm × 1 mm
Contacts	4094
Socket	sTRX4
Succession
Ryzen Threadripper 2970WX

Ryzen Threadripper 3960X is a 64-bit tetracosa-core high-performance x86 desktop microprocessor introduced by AMD in late 2019. The 3960X, which is based on their Zen 2 microarchitecture, is fabricated on TSMC's 7 nm process. The 3960X operates at a base frequency of 3.8 GHz with a TDP of 280 W and a boost of up to 4.5 GHz. This MPU supports up to 256 GiB of quad-channel DDR4-3200 memory.

Cache

Main article: Zen 2 § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 1536 KiB 1,572,864 B 1.5 MiB L1I$ 768 KiB 786,432 B 0.75 MiB 24 × 32 KiB 8-way set associative   L1D$ 768 KiB 786,432 B 0.75 MiB 24 × 32 KiB 8-way set associative write-back L2$ 12 MiB 12,288 KiB 12,582,912 B 0.0117 GiB     24 × 512 KiB 8-way set associative write-back L3$ 128 MiB 131,072 KiB 134,217,728 B 0.125 GiB     8 × 16 MiB 16-way set associative write-back

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-3200 Supports ECC Yes Max Mem 256 GiB Controllers 4 Channels 4 Max Bandwidth 95.37 GiB/s 97,658.88 MiB/s 102.403 GB/s 102,402.758 MB/s 0.0931 TiB/s 0.102 TB/s Bandwidth Single 23.84 GiB/s Double 47.68 GiB/s Quad 95.37 GiB/s

Expansions

Main article: Castle Peak § I/O Interfaces

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 4.0 Max Lanes: 64 Configuration: x16, x8, x4, x2, x1 SATA Revision: 3.2 Max Ports: 16 USB Revision: 3.2 Gen 2×1 Max Ports: 4 Rate: 10 Gbit/s

Graphics

This processor has no integrated graphics.

Features

[Edit/Modify Supported Features]

Supported x86 Extensions & Processor Features

MMX MMX Extension EMMX Extended MMX Extension SSE Streaming SIMD Extensions SSE2 Streaming SIMD Extensions 2 SSE3 Streaming SIMD Extensions 3 SSSE3 Supplemental SSE3 SSE4.1 Streaming SIMD Extensions 4.1 SSE4.2 Streaming SIMD Extensions 4.2 SSE4a Streaming SIMD Extensions 4a AVX Advanced Vector Extensions AVX2 Advanced Vector Extensions 2 ABM Advanced Bit Manipulation BMI1 Bit Manipulation Instruction Set 1 BMI2 Bit Manipulation Instruction Set 2 FMA3 3-Operand Fused-Multiply-Add AES AES Encryption Instructions RdRand Hardware RNG SHA SHA Extensions ADX Multi-Precision Add-Carry CLMUL Carry-less Multiplication Extension F16C 16-bit Floating Point Conversion x86-16 16-bit x86 x86-32 32-bit x86 x86-64 64-bit x86 Real Real Mode Protected Protected Mode SMM System Management Mode FPU Integrated x87 FPU NX No-eXecute SMT Simultaneous Multithreading AMD-Vi AMD-Vi (I/O MMU virtualization) AMD-V AMD Virtualization TSME Transparent SME SenseMI SenseMI Technology Boost 2 Precision Boost 2

Bibliography

• "AMD Introduces World’s Fastest High-End Desktop Processors With 3rd Gen Ryzen Threadripper Family: Delivering Unmatched Performance With No Compromises" (Press release). AMD.com. November 7, 2019.
• "AMD Ryzen™ Threadripper™ 3960X" AMD.com.
• "Power and Thermal Data Sheet for AMD Family 17h Models 30h-3Fh sTRX4 Processors", AMD Publ. #56736, Rev. 1.00, February 2020
• "Revision Guide for AMD Family 17h Models 30h-3Fh Processors", AMD Publ. #56323, Rev. 0.78, February 2021