AMD

AMD Ryzen 9 3900X

AMD processor specifications and benchmark scores

12
Cores
24
Threads
4.6
GHz Boost
105W
TDP
πŸ”“Unlocked

AMD Ryzen 9 3900X Specifications

βš™οΈ

Ryzen 9 3900X Core Configuration

Processing cores and threading

The AMD Ryzen 9 3900X features 12 physical cores and 24 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
12
Threads
24
SMP CPUs
1
⏱️

9 3900X Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Ryzen 9 3900X benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Ryzen 9 3900X by AMD can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.8 GHz
Boost Clock
4.6 GHz
Multiplier
38x πŸ”“
πŸ’Ύ

AMD's Ryzen 9 3900X Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the 9 3900X processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Ryzen 9 3900X's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
64 KB (per core)
L2 Cache
512 KB (per core)
L3 Cache
64 MB
πŸ—οΈ

Zen 2 Architecture & Process

Manufacturing and design details

The AMD Ryzen 9 3900X is built on AMD's 7 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in 9 3900X incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Zen 2
Codename
Matisse
Process Node
7 nm
Foundry
TSMC
Transistors
7,600 million
Die Size
2x 74 mmΒ²
Generation
Ryzen 9 (Zen 2 (Matisse))
πŸ”’

Zen 2 Instruction Set Features

Supported CPU instructions and extensions

The Ryzen 9 3900X by AMD supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSSE3
SSE4A
SSE4.1
SSE4.2
AES
AVX
AVX2
BMI1
BMI2
SHA
F16C
FMA3
AMD64
AMD-V
SMAP
SMEP
SMT
Precision Boost 2
XFR 2
πŸ”Œ

9 3900X Power & Thermal

TDP and power specifications

The AMD Ryzen 9 3900X has a TDP (Thermal Design Power) of 105W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
105W
PPT
142 W
πŸ”§

AMD Socket AM4 Platform & Socket

Compatibility information

The Ryzen 9 3900X uses the AMD Socket AM4 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
AMD Socket AM4
Chipsets
A300, X300, A320, B350, X370, B450, X470, A520, B550, X570
PCIe
Gen 4, 24 Lanes(CPU only)
Package
Β΅OPGA-1331
DDR5

AMD Socket AM4 Memory Support

RAM compatibility and speeds

Memory support specifications for the 9 3900X define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Ryzen 9 3900X determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR4
Memory Bus
Dual-channel
Memory Bandwidth
51.2 GB/s
πŸ“¦

Ryzen 9 3900X Product Information

Release and pricing details

The AMD Ryzen 9 3900X is manufactured by AMD and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Ryzen 9 3900X by AMD offers a specific balance of performance, features, and cost within AMD's product lineup.

Manufacturer
AMD
Release Date
Jul 2019
Launch Price
$499
Market
Desktop
Status
Active
Part Number
100-000000023100-100000023BOX100-100000023MPK

Ryzen 9 3900X Benchmark Scores

cinebench_cinebench_r15_multicoreSource

Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how AMD Ryzen 9 3900X performs in parallel rendering workloads like video production and 3D animation. The R15 version remains useful for comparing against older hardware benchmarks. Higher scores directly correlate with faster render times in Cinema 4D and similar 3D applications.

cinebench_cinebench_r15_multicore #246 of 1788
2,788
19%
Max: 14,978
Compare with other CPUs

cinebench_cinebench_r15_singlecoreSource

Cinebench R15 single-core measures the speed of one CPU thread rendering 3D geometry. This score indicates how AMD Ryzen 9 3900X handles tasks that can't be parallelized across multiple cores. Games and many desktop applications still rely heavily on single-thread performance. A higher single-core score means snappier system responsiveness in everyday use.

cinebench_cinebench_r15_singlecore #246 of 1245
393
19%
Max: 2,114

cinebench_cinebench_r20_multicoreSource

Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on AMD Ryzen 9 3900X. The more demanding workload provides better differentiation between current-generation processors.

cinebench_cinebench_r20_multicore #246 of 1788
11,618
19%
Max: 62,412
Compare with other CPUs

cinebench_cinebench_r20_singlecoreSource

Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of AMD Ryzen 9 3900X. The increased complexity provides more accurate performance differentiation between modern CPUs.

cinebench_cinebench_r20_singlecore #246 of 1784
1,640
19%
Max: 8,811

cinebench_cinebench_r23_multicoreSource

Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of AMD Ryzen 9 3900X after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss.

cinebench_cinebench_r23_multicore #246 of 1788
27,662
19%
Max: 148,601
Compare with other CPUs

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how AMD Ryzen 9 3900X maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance.

cinebench_cinebench_r23_singlecore #246 of 1788
3,905
19%
Max: 20,979
Compare with other CPUs

geekbench_multicoreSource

Geekbench multi-core tests AMD Ryzen 9 3900X across real-world workloads including image processing, machine learning, and data compression. All available threads are utilized to measure parallel performance. Higher scores indicate better capability in multitasking and content creation.

geekbench_multicore #110 of 711
9,924
44%
Max: 22,515
Compare with other CPUs

πŸ† Top 5 Performers

geekbench_singlecoreSource

Geekbench single-core measures how fast one thread of AMD Ryzen 9 3900X can process tasks like web browsing and document editing. This score correlates with how snappy the system feels during normal use. Many applications still depend primarily on single-thread performance.

geekbench_singlecore #192 of 711
1,708
50%
Max: 3,401
Compare with other CPUs

passmark_data_compressionSource

Data compression measures how fast AMD Ryzen 9 3900X can compress and decompress files. This is important for archiving, backup software, and file transfer applications. Higher scores mean faster ZIP, RAR, and backup operations.

passmark_data_compression #144 of 528
448,906
8%
Max: 5,427,555
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
5,427,555
#2 AMD EPYC 9845
4,680,013
#3 AMD EPYC 9755
4,517,407
#4 AMD EPYC 9745
3,929,890

passmark_data_encryptionSource

Data encryption tests how fast AMD Ryzen 9 3900X can encrypt information using AES and other algorithms. This is critical for security applications, VPNs, and secure communications.

passmark_data_encryption #132 of 528
28,586
9%
Max: 316,606
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
316,606
#2 AMD EPYC 9845
296,808
#3 AMD EPYC 9755
284,927
#4 AMD EPYC 9754
231,891
#5 AMD EPYC 9745
229,447

passmark_extended_instructionsSource

Extended instructions tests AMD Ryzen 9 3900X performance using SSE and AVX instruction sets. These specialized instructions accelerate multimedia, scientific, and AI workloads. Video encoding and image processing heavily utilize SIMD capabilities.

passmark_extended_instructions #147 of 528
29,221
7%
Max: 392,159
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
392,159
#2 AMD EPYC 9845
314,798
#3 AMD EPYC 9755
303,321
#4 AMD EPYC 9745
280,477

passmark_find_prime_numbersSource

Find prime numbers tests AMD Ryzen 9 3900X ability to identify primes through intensive calculations. This is a pure computational benchmark that stresses CPU arithmetic units without memory bottlenecks. The test reveals raw mathematical processing capability. Higher scores indicate superior arithmetic throughput independent of memory subsystem performance.

passmark_find_prime_numbers #128 of 528
214
9%
Max: 2,422
Compare with other CPUs

passmark_floating_point_mathSource

Floating point math measures how AMD Ryzen 9 3900X handles decimal calculations critical for scientific computing and 3D rendering. This affects performance in CAD and physics simulations. Game physics engines also rely heavily on floating point operations.

passmark_floating_point_math #248 of 528
58,434
5%
Max: 1,141,430
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
1,141,430
#2 AMD EPYC 9845
978,377
#3 AMD EPYC 9755
922,900
#4 AMD EPYC 9745
761,219
#5 AMD EPYC 9655P
710,260

passmark_integer_mathSource

Integer math tests how fast AMD Ryzen 9 3900X processes whole number calculations essential for database operations and compression algorithms. This is fundamental to general computing performance.

passmark_integer_math #194 of 528
99,628
6%
Max: 1,806,439
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
1,806,439
#2 AMD EPYC 9845
1,687,531
#3 AMD EPYC 9755
1,549,946
#4 AMD EPYC 9745
1,224,315

passmark_multithreadSource

PassMark multi-thread tests AMD Ryzen 9 3900X across integer math, floating point, compression, and encryption using all cores. This provides an overall multi-threaded CPU performance score.

passmark_multithread #170 of 528
32,544
19%
Max: 174,825
Compare with other CPUs

passmark_physicsSource

Physics tests how AMD Ryzen 9 3900X handles physics simulations used in games and engineering software. This measures performance in calculating object interactions and movements. Games with complex physics benefit from higher scores.

passmark_physics #199 of 528
1,794
6%
Max: 27,806
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9755
27,806
#2 AMD EPYC 9655P
26,810
#3 AMD EPYC 9655
25,958
#4 AMD EPYC 9684X
24,686
#5 AMD EPYC 9575F
22,021

passmark_random_string_sortingSource

Random string sorting measures how fast AMD Ryzen 9 3900X can organize text data. This is important for database operations, search indexing, and data processing applications. Applications that process large amounts of text benefit from higher scores.

passmark_random_string_sorting #154 of 528
48,300
8%
Max: 609,901
Compare with other CPUs

πŸ† Top 5 Performers

#1 AMD EPYC 9965
609,901
#2 AMD EPYC 9755
571,185
#3 AMD EPYC 9845
538,060
#4 AMD EPYC 9745
468,975
#5 AMD EPYC 9655P
455,310

passmark_single_threadSource

PassMark single-thread measures per-core performance of AMD Ryzen 9 3900X across various computational tasks. This score is critical for gaming and single-threaded applications. Higher scores mean better system responsiveness in everyday use. Many legacy applications and games still depend heavily on single-thread speed.

passmark_single_thread #422 of 528
2,703
53%
Max: 5,097

passmark_singlethreadSource

PassMark single-thread measures per-core performance of AMD Ryzen 9 3900X across various computational tasks. This score is critical for gaming and single-threaded applications.

passmark_singlethread #421 of 528
2,703
53%
Max: 5,097

About AMD Ryzen 9 3900X

AMD Ryzen 9 3900X Benchmark & Specifications

The AMD Ryzen 9 3900X stands as a flagship processor in AMD’s Ryzen 9 lineup, designed on the cutting-edge Zen 2 (Matisse) architecture with a highly efficient 7 nm process. Featuring 12 cores and 24 threads, this chip is engineered for users who demand exceptional multithreaded performance, whether for heavy content creation, complex simulations, or gaming at the highest settings. With a base clock of 3.80 GHz and a boost up to 4.60 GHz, the AMD Ryzen 9 3900X provides not only incredible single-core speeds but also the muscle to tackle demanding, multi-threaded workloads. Its 64 MB of L3 cache and 105W TDP strike an impressive balance between performance and power efficiency, making it a versatile choice for both enthusiasts and professionals. But just how well does the AMD Ryzen 9 3900X stack up when put to the test?

When it comes to benchmark scores, the Ryzen 9 3900X delivers some eye-catching results. In Passmark tests, it achieves 448,906 points in data compression, 99,628 points in integer math, and 58,434 points in floating-point math clear indicators of its computational prowess. Multithreaded performance isn’t left behind either, with 32,544 points underlining its ability to efficiently distribute heavy workloads across all available threads. But with a launch price of $499, is the Ryzen 9 3900X truly the best value proposition in its price bracket, or does it merely tread water among stiff competition? For tech enthusiasts evaluating the jump to a 12-core, 24-thread processor, these benchmarks offer a compelling case for the AMD Ryzen 9 3900X’s capabilities.

Pairing the AMD Ryzen 9 3900X with the right components can unlock even greater performance. Consider the following setup essentials:

  1. A high-speed, low-latency memory kit, ideally DDR4-3600, to make the most of the processor’s IMC and reduce bottlenecks.
  2. A robust cooler, such as a premium air or liquid cooling solution, to keep temperatures in check during intense multithreaded tasks.
  3. A motherboard with the AMD Socket AM4, preferably from the X570 or B550 chipset series, offering PCIe 4.0 support for future-proofing.
  4. A fast NVMe SSD to reduce load times and improve overall system responsiveness when paired with the Ryzen 9 3900X.
Ultimately, the AMD Ryzen 9 3900X stands as a powerhouse CPU that begs the question: is your current setup ready to leverage all 12 cores and 24 threads, or could it be holding you back from achieving maximum performance?

The Intel Equivalent of Ryzen 9 3900X

Looking for a similar processor from Intel? The Intel Core i9-9900T offers comparable performance and features in the Intel lineup.

Intel Core i9-9900T

Intel β€’ 8 Cores

View Specs Compare

Popular AMD Ryzen 9 3900X Comparisons

See how the Ryzen 9 3900X stacks up against similar processors from the same generation and competing brands.

Compare Ryzen 9 3900X with Other CPUs

Select another CPU to compare specifications and benchmarks side-by-side.

Browse CPUs