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Ryzen 9 3900X
General Info
Designer	AMD
Manufacturer	TSMC
Model Number	3900X
Part Number	100-000000023, 100-100000023BOX
Market	Desktop
Introduction	May 27, 2019 (announced) July 7, 2019 (launched)
Release Price	$499
Shop	Amazon
General Specs
Family	Ryzen 9
Series	3000
Locked	No
Frequency	3,800 MHz
Turbo Frequency	4,600 MHz
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Zen 2
Core Name	Matisse
Core Stepping	B0
Process	7 nm, 12 nm
Technology	CMOS
MCP	Yes (3 dies)
Word Size	64 bit
Cores	12
Threads	24
Max Memory	128 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	105 W
Packaging
Package	OPGA-1331
Package Type	Organic Micro Pin Grid Array
Dimension	40 mm × 40 mm
Pitch	1 mm
Contacts	1331
Socket	Socket AM4

Ryzen 9 3900X is a 64-bit dodeca-core high-end performance x86 desktop microprocessor introduced by AMD in mid-2019. Fabricated on TSMC's 7 nm process based on the Zen 2 microarchitecture, this processor operates at 3.8 GHz with a TDP of 105 W and a Boost frequency of up to 4.6 GHz. The 3900X supports up to 128 GiB of dual-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$ 768 KiB 786,432 B 0.75 MiB L1I$ 384 KiB 393,216 B 0.375 MiB 12x32 KiB 8-way set associative   L1D$ 384 KiB 393,216 B 0.375 MiB 12x32 KiB 8-way set associative write-back L2$ 6 MiB 6,144 KiB 6,291,456 B 0.00586 GiB     12x512 KiB 8-way set associative write-back L3$ 64 MiB 65,536 KiB 67,108,864 B 0.0625 GiB     4x16 MiB

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2133 Supports ECC Yes Max Mem 128 GiB Channels 2 Max Bandwidth 47.68 GiB/s 48,824.32 MiB/s 51.196 GB/s 51,196.01 MB/s 0.0466 TiB/s 0.0512 TB/s Bandwidth Single 23.84 GiB/s Double 47.68 GiB/s

[Edit] Memory Configurations
Dual Channel	Single Rank	2 DIMMs	DDR4-3200
		4 DIMMs	DDR4-2933
	Double Rank	2 DIMMs	DDR4-3200
		4 DIMMs	DDR4-2667

Expansions

In addition to the x4 lanes that are reserved for the chipset, the Ryzen 9 3900X has x16 for a discrete graphics processor and x4 for storage (NVMe or 2 ports SATA Express).

[Edit/Modify Expansions Info]

	Expansion Options
PCIe Revision: 4.0 Max Lanes: 20 Configuration: 1x16+x4, 2x8+x4, 1x8+2x4+x4

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 SenseMI SenseMI Technology XFR 2 Extended Frequency Range 2 Boost 2 Precision Boost 2