Type

CPU / Microprocessor

Market segment

Desktop

Family

Model number  ? 

3900X

CPU part numbers

• 100-000000023 is an OEM/tray microprocessor

• 100-100000023BOX is a boxed microprocessor

Frequency ? 

3800 MHz

Maximum turbo frequency

4600 MHz

Socket

Socket AM4

Introduction date

May 26, 2019 (announcement) July 7, 2019 (availability)

Price at introduction

$499

Microarchitecture

Zen 2

Processor core  ? 

Matisse [1]

Manufacturing process

0.007 micron FinFET process

Data width

64 bit

The number of CPU cores

12

The number of threads

24

Floating Point Unit

Integrated

Level 1 cache size  ? 

12 x 32 KB 8-way set associative instruction caches 12 x 32 KB 8-way set associative data caches

Level 2 cache size ? 

12 x 512 KB 8-way set associative unified caches

Level 3 cache size

64 MB 16-way set associative shared cache

Cache latency

4 (L1 cache) 12 (L2 cache) 40 (L3 cache)

Multiprocessing

Uniprocessor

Extensions and Technologies

• MMX instructions

• Extensions to MMX

• SSE / Streaming SIMD Extensions

• SSE2 / Streaming SIMD Extensions 2

• SSE3 / Streaming SIMD Extensions 3

• SSSE3 / Supplemental Streaming SIMD Extensions 3

• SSE4 / SSE4.1 + SSE4.2 / Streaming SIMD Extensions 4  ? 

• SSE4a  ? 

• AES / Advanced Encryption Standard instructions

• AVX / Advanced Vector Extensions

• AVX2 / Advanced Vector Extensions 2.0

• BMI / BMI1 + BMI2 / Bit Manipulation instructions

• F16C / 16-bit Floating-Point conversion instructions

• FMA3 / 3-operand Fused Multiply-Add instructions

• AMD64 / AMD 64-bit technology  ? 

• SMT / Simultaneous MultiThreading

• Precision Boost 2

• AMD-V / AMD Virtualization technology

Security Features

• EVP / Enhanced Virus Protection  ? 

• SMAP / Supervisor Mode Access Prevention

• SMEP / Secure Mode Execution Protection

Integrated graphics

None

Memory controller

Memory channels: 2 Supported memory: DDR4-3200

Other peripherals

PCI-Express 4.0 interface (16 lanes)

Thermal Design Power ? 

105 Watt