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Ryzen 9 3900X - AMD
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Ryzen 9 3900X
General Info
DesignerAMD
ManufacturerTSMC
Model Number3900X
Part Number100-000000023,
100-100000023BOX
MarketDesktop
IntroductionMay 27, 2019 (announced)
July 7, 2019 (launched)
Release Price$499
General Specs
FamilyRyzen 9
Series3000
LockedNo
Frequency3,800 MHz
Turbo Frequency4,600 MHz
Microarchitecture
ISAx86-64 (x86)
MicroarchitectureZen 2
Core NameMatisse
Core SteppingB0
Process7 nm, 12 nm
TechnologyCMOS
MCPYes (3 dies)
Word Size64 bit
Cores12
Threads24
Max CPUs1 (Uniprocessor)
Max Memory128 GiB
Electrical
TDP105 W
Packaging
PackageµOPGA-1331 (PGA)socket am4.svg
Pin Count1331
SocketSocket 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[edit]

Main article: Zen 2 § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
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
0.75 MiB
786,432 B
7.324219e-4 GiB
L1I$384 KiB
0.375 MiB
393,216 B
3.662109e-4 GiB
12x32 KiB8-way set associative 
L1D$384 KiB
0.375 MiB
393,216 B
3.662109e-4 GiB
12x32 KiB8-way set associativewrite-back

L2$6 MiB
6,144 KiB
6,291,456 B
0.00586 GiB
  12x512 KiB8-way set associativewrite-back

L3$64 MiB
65,536 KiB
67,108,864 B
0.0625 GiB
  4x16 MiB  

Memory controller[edit]

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-3200
Supports ECCYes
Max Mem128 GiB
Channels2
Max Bandwidth47.68 GiB/s
82.963 GB/s
48,824.32 MiB/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[edit]

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]

ide icon.svg
Expansion Options
PCIeRevision: 4.0
Max Lanes: 20
Configuration: 1x16+x4, 2x8+x4, 1x8+2x4+x4


Graphics[edit]

This processor has no integrated graphics.

Features[edit]

[Edit/Modify Supported Features]

Cog-icon-grey.svg
Supported x86 Extensions & Processor Features
MMXMMX Extension
EMMXExtended MMX Extension
SSEStreaming SIMD Extensions
SSE2Streaming SIMD Extensions 2
SSE3Streaming SIMD Extensions 3
SSSE3Supplemental SSE3
SSE4.1Streaming SIMD Extensions 4.1
SSE4.2Streaming SIMD Extensions 4.2
SSE4aStreaming SIMD Extensions 4a
AVXAdvanced Vector Extensions
AVX2Advanced Vector Extensions 2
ABMAdvanced Bit Manipulation
BMI1Bit Manipulation Instruction Set 1
BMI2Bit Manipulation Instruction Set 2
FMA33-Operand Fused-Multiply-Add
AESAES Encryption Instructions
RdRandHardware RNG
SHASHA Extensions
ADXMulti-Precision Add-Carry
CLMULCarry-less Multiplication Extension
F16C16-bit Floating Point Conversion
x86-1616-bit x86
x86-3232-bit x86
x86-6464-bit x86
RealReal Mode
ProtectedProtected Mode
SMMSystem Management Mode
FPUIntegrated x87 FPU
NXNo-eXecute
SMTSimultaneous Multithreading
AMD-ViAMD-Vi (I/O MMU virtualization)
AMD-VAMD Virtualization
SenseMISenseMI Technology
XFR 2Extended Frequency Range 2
Boost 2Precision Boost 2
Facts about "Ryzen 9 3900X - AMD"
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
Ryzen 9 3900X - AMD#package + and Ryzen 9 3900X - AMD#pcie +
base frequency3,800 MHz (3.8 GHz, 3,800,000 kHz) +
core count12 +
core nameMatisse +
core steppingB0 +
designerAMD +
die count3 +
familyRyzen 9 +
first announcedMay 27, 2019 +
first launchedJuly 7, 2019 +
full page nameamd/ryzen 9/3900x +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has amd amd-v technologytrue +
has amd amd-vi technologytrue +
has amd extended frequency range 2true +
has amd precision boost 2true +
has amd sensemi technologytrue +
has ecc memory supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension +, SenseMI Technology +, Extended Frequency Range 2 + and Precision Boost 2 +
has locked clock multiplierfalse +
has simultaneous multithreadingtrue +
has x86 advanced encryption standard instruction set extensiontrue +
instance ofmicroprocessor +
is multi-chip packagetrue +
isax86-64 +
isa familyx86 +
l1$ size0.75 MiB (768 KiB, 786,432 B, 7.324219e-4 GiB) +
l1d$ description8-way set associative +
l1d$ size0.375 MiB (384 KiB, 393,216 B, 3.662109e-4 GiB) +
l1i$ description8-way set associative +
l1i$ size0.375 MiB (384 KiB, 393,216 B, 3.662109e-4 GiB) +
l2$ description8-way set associative +
l2$ size6 MiB (6,144 KiB, 6,291,456 B, 0.00586 GiB) +
l3$ size64 MiB (65,536 KiB, 67,108,864 B, 0.0625 GiB) +
ldateJuly 7, 2019 +
manufacturerTSMC +
market segmentDesktop +
max cpu count1 +
max memory131,072 MiB (134,217,728 KiB, 137,438,953,472 B, 128 GiB, 0.125 TiB) +
max memory bandwidth47.68 GiB/s (82.963 GB/s, 48,824.32 MiB/s, 0.0466 TiB/s, 0.0512 TB/s) +
max memory channels2 +
microarchitectureZen 2 +
model number3900X +
nameRyzen 9 3900X +
packageµOPGA-1331 +
part number100-000000023 + and 100-100000023BOX +
process7 nm (0.007 μm, 7.0e-6 mm) + and 12 nm (0.012 μm, 1.2e-5 mm) +
release price$ 499.00 (€ 449.10, £ 404.19, ¥ 51,561.67) +
series3000 +
socketSocket AM4 +
supported memory typeDDR4-3200 +
tdp105 W (105,000 mW, 0.141 hp, 0.105 kW) +
technologyCMOS +
thread count24 +
turbo frequency4,600 MHz (4.6 GHz, 4,600,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +