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Ryzen Threadripper 1900X - AMD
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Ryzen Threadripper 1900X
General Info
Model Number1900X
Part NumberYD190XA8U8SAE,
IntroductionJuly 30, 2017 (announced)
August 31, 2017 (launched)
Release Price$549
General Specs
FamilyRyzen Threadripper
Frequency3,800 MHz
Turbo Frequency4,000 MHz (1 core)
Bus rate4 × 8 GT/s
Clock multiplier38
ISAx86-64 (x86)
Core Family23
Core Model1
Core SteppingB1
Process14 nm
Die213 mm²
MCPYes (2 dies)
Word Size64 bit
Max CPUs1 (Uniprocessor)
Max Memory1 TiB
TDP180 W
PackageFCLGA-4094 (LGA)
SocketSocket TR4

Ryzen Threadripper 1900X is a 64-bit octa-core high-performance x86 desktop microprocessor set to be introduced by AMD in mid-2017. The 1900X, which is based on their Zen microarchitecture, is fabricated on a 14 nm process. The 1900X operates at a base frequency of 3.8 GHz with a TDP of 180 W and a Boost frequency of 4 GHz. This MPU supports up to 1 TiB of quad-channel DDR4-2666 ECC memory.

As with the rest of the Threadripper family based on Zen, the 1900X consists of two dies with one CPU Complex (CCX) disabled in each die. That is, four cores in a single CCX in each of the dies are active for a total of eight cores in the entire package (4+0 [Die 1] + 4+0 [Die 2]).


Main article: Zen § 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$512 KiB
0.5 MiB
524,288 B
4.882812e-4 GiB
8x64 KiB4-way set associative 
L1D$256 KiB
0.25 MiB
262,144 B
2.441406e-4 GiB
8x32 KiB8-way set associativewrite-back

L2$4 MiB
4,096 KiB
4,194,304 B
0.00391 GiB
  8x512 KiB8-way set associativewrite-back

L3$16 MiB
16,384 KiB
16,777,216 B
0.0156 GiB
  2x8 MiB16-way set associative 

Memory controller[edit]

This CPU supports 8 DIMMs of rates 1,333 MT/s - 3,200 MT/s (UDIMM/SODIMM).

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-2666
Supports ECCYes
Max Mem1 TiB
Max Bandwidth79.47 GiB/s
Single 19.87 GiB/s
Double 39.74 GiB/s
Quad 79.47 GiB/s
[Edit] Memory Configurations
Quad Channel Single Rank 1 DIMM DDR4-2666
2 DIMMs DDR4-2133
Double Rank 1 DIMM DDR4-2400
2 DIMMs DDR4-1866


This processor includes 60 PCIe lanes with PHY of 16 lanes may each have a maximum of 8 PCIe ports (x1, x2, x4, x8, x16). Note that 48 lanes are dedicated for multiple GPUs with the other 12 lanes for I/O.

[Edit/Modify Expansions Info]

ide icon.svg
Expansion Options
Max Lanes60
Configsx16, x8, x4, x1
  • eMMC, LPC, SMBus, SPI/eSPI


This processor has no integrated graphics.


[Edit/Modify Supported Features]

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
SMTSimultaneous Multithreading
AMD-ViAMD-Vi (I/O MMU virtualization)
AMD-VAMD Virtualization
SenseMISenseMI Technology
XFRExtended Frequency Range
  • This model has full XFR support, allowing for an additional +200 MHz
    0.2 GHz
    200,000 kHz
    boost frequency.
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
Ryzen Threadripper 1900X - AMD#package +
amd xfr headroom200 MHz (0.2 GHz, 200,000 kHz) +
base frequency3,800 MHz (3.8 GHz, 3,800,000 kHz) +
bus links4 +
bus rate8,000 MT/s (8 GT/s, 8,000,000 kT/s) +
chipsetX399 +
clock multiplier38 +
core count8 +
core family23 +
core model1 +
core steppingB1 +
designerAMD +
die area213 mm² (0.33 in², 2.13 cm², 213,000,000 µm²) +
die count2 +
familyRyzen Threadripper +
first announcedJuly 30, 2017 +
first launchedAugust 31, 2017 +
full page nameamd/ryzen threadripper/1900x +
has advanced vector extensionstrue +
has advanced vector extensions 2true +
has amd amd-v technologytrue +
has amd amd-vi technologytrue +
has amd extended frequency rangetrue +
has amd sensemi technologytrue +
has ecc memory supporttrue +
has featureAdvanced Vector Extensions +, Advanced Vector Extensions 2 +, Advanced Encryption Standard Instruction Set Extension +, SenseMI Technology + and Extended Frequency Range +
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$ size0.25 MiB (256 KiB, 262,144 B, 2.441406e-4 GiB) +
l1i$ description4-way set associative +
l1i$ size0.5 MiB (512 KiB, 524,288 B, 4.882812e-4 GiB) +
l2$ description8-way set associative +
l2$ size4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) +
l3$ description16-way set associative +
l3$ size16 MiB (16,384 KiB, 16,777,216 B, 0.0156 GiB) +
ldateAugust 31, 2017 +
manufacturerGlobalFoundries +
market segmentDesktop +
max cpu count1 +
max memory1,048,576 MiB (1,073,741,824 KiB, 1,099,511,627,776 B, 1,024 GiB, 1 TiB) +
max pcie lanes60 +
microarchitectureZen +
model number1900X +
nameRyzen Threadripper 1900X +
packageFCLGA-4094 +
part numberYD190XA8U8SAE + and YD190XA8AEWOF +
process14 nm (0.014 μm, 1.4e-5 mm) +
release price$ 549.00 (€ 494.10, £ 444.69, ¥ 56,728.17) +
seriesRyzen +
socketSocket SP3 +
supported memory typeDDR4-2666 +
tdp180 W (180,000 mW, 0.241 hp, 0.18 kW) +
technologyCMOS +
thread count16 +
transistor count9,600,000,000 +
turbo frequency (1 core)4,000 MHz (4 GHz, 4,000,000 kHz) +
word size64 bit (8 octets, 16 nibbles) +