General information
Type CPU / Microprocessor
Market segment Desktop
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
Architecture / Microarchitecture
Microarchitecture Zen 2
Processor c ? 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 / A 64-bit technology ?
SMT / Simultaneous MultiThreading
Precision Boost 2
AMD-V / A Virtualization technology
Security Features EVP / Enhanced a Protection ?
SMAP / Supervisor Mode Access Prevention
SMEP / Secure Mode Execution Protection
Integrated peripherals / components
Integrated graphics None
Memory controller Memory channels: 2
Supported memory: DDR4-3200
Other peripherals PCI-Express 4.0 interface (16 lanes)
Electrical / Thermal parameters
Thermal Design Power ? 105 Watt