AMD Ryzen 9 5900X vs AMD Ryzen 9 3900X

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CPU comparison with benchmarks


AMD Ryzen 9 5900X CPU1 vs CPU2 AMD Ryzen 9 3900X
AMD Ryzen 9 5900X AMD Ryzen 9 3900X

CPU comparison

AMD Ryzen 9 5900X or AMD Ryzen 9 3900X - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD Ryzen 9 5900X has 12 cores with 24 threads and clocks with a maximum frequency of 4.80 GHz. Up to 128 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 5900X was released in Q4/2020.

The AMD Ryzen 9 3900X has 12 cores with 24 threads and clocks with a maximum frequency of 4.60 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The AMD Ryzen 9 3900X was released in Q3/2019.
AMD Ryzen 9 (34) Family AMD Ryzen 9 (34)
AMD Ryzen 5000 (12) CPU group AMD Ryzen 3000 (15)
4 Generation 3
Vermeer (Zen 3) Architecture Matisse (Zen 2)
Desktop / Server Segment Desktop / Server
AMD Ryzen 9 3900X Predecessor --
AMD Ryzen 9 7900X Successor AMD Ryzen 9 5900X

CPU Cores and Base Frequency

The AMD Ryzen 9 5900X is a 12 core processor with a clock frequency of 3.70 GHz (4.80 GHz). The AMD Ryzen 9 3900X has 12 CPU cores with a clock frequency of 3.80 GHz (4.60 GHz).

AMD Ryzen 9 5900X Characteristic AMD Ryzen 9 3900X
12 Cores 12
24 Threads 24
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.70 GHz Frequency 3.80 GHz
4.80 GHz Turbo Frequency (1 Core) 4.60 GHz
4.50 GHz Turbo Frequency (All Cores) 4.00 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

AMD Ryzen 9 5900X Characteristic AMD Ryzen 9 3900X
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The AMD Ryzen 9 5900X supports a maximum of 128 GB of memory in 2 memory channels. The AMD Ryzen 9 3900X can connect up to 128 GB of memory in 2 memory channels.

AMD Ryzen 9 5900X Characteristic AMD Ryzen 9 3900X
DDR4-3200 Memory DDR4-3200
128 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC Yes
6.00 MB L2 Cache 6.00 MB
64.00 MB L3 Cache 64.00 MB
4.0 PCIe version 4.0
20 PCIe lanes 20
39.4 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 9 5900X has a TDP of 105 W, that of the AMD Ryzen 9 3900X is 105 W.

AMD Ryzen 9 5900X Characteristic AMD Ryzen 9 3900X
105 W TDP (PL1 / PBP) 105 W
142 W TDP (PL2) 142 W
-- TDP up --
-- TDP down --
90 °C Tjunction max. 95 °C

Technical details

The AMD Ryzen 9 5900X has a 70.00 MB cache, while the AMD Ryzen 9 3900X cache has a total of 70.00 MB.

AMD Ryzen 9 5900X Characteristic AMD Ryzen 9 3900X
7 nm Technology 7 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
AM4 (PGA 1331) Socket AM4 (PGA 1331)
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2020 Release date Q3/2019
549 $ Release price 485 $
show more data show more data


Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
98 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
78 (80%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
1189 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1068 (90%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
1636 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1302 (80%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
21878 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
18165 (83%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
1727 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1300 (75%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
14515 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
12454 (86%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
2199 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1714 (78%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
12637 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
10689 (85%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
637 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
502 (79%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
8491 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
6954 (82%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
308 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
281 (91%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
39295 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
32755 (83%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
647 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
536 (83%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 3.70 GHz
9520 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz
8183 (86%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz
270 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
214 (79%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
3684 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
3168 (86%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz
0 (0%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
115.9 (100%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
AMD Ryzen 9 5900X AMD Ryzen 9 5900X
21,878 CB R23 MC @ 131 W
167 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
3.80 GHz
0 (0%)

Devices using this processor

AMD Ryzen 9 5900X AMD Ryzen 9 3900X
Unknown Unknown

News and articles for the AMD Ryzen 9 5900X and the AMD Ryzen 9 3900X

Why the new AMD Ryzen 7000 processors for the AM5 socket are currently not a good deal
Why the new AMD Ryzen 7000 processors for the AM5 socket are currently not a good deal
Posted by Stefan on 2022-10-11
At the end of September 2022, the time had come: AMD presented its latest desktop processors called AMD Ryzen 7000. Initially, 4 processors with 6 to 16 CPU cores were released.

The new socket AM5 (LGA 1718) is used for the first time, which is intended to replace the very durable socket AM4 introduced in 2017 as AMDs mainstream platform. This includes (depending on the chipset) PCIe 5.0 support as well as the exclusive use of DDR5 memory on all AM5 mainboards.

Officially, DDR5-5200 is the maximum, but with AMDs EXPO Technology which is similar to Intel's XMP 3.0, AMD now also has a solution for easy overclocking of the main memory. AMD itself names DDR5-6000 as the sweet spot for the new AMD Ryzen 7000 processors.
Most popular processors in the first half of 2022
Most popular processors in the first half of 2022
Posted by Stefan on 2022-07-05
In the past we had repeatedly written about our most popular processors. Since this format was quiet popular, I would like to continue this today and introduce you the most popular processors in the first half of 2022.

With more than 2 million page views per month, CPU-Monkey is one of the biggest comparison sites for processors and is currently available in 16 languages.
AMD Ryzen 5 7600X and AMD Ryzen 7 7800X are coming in September
AMD Ryzen 5 7600X and AMD Ryzen 7 7800X are coming in September
Posted by Stefan on 2022-06-20
After we published a performance assessment of the AMD Ryzen 9 7950X last week, the well-known AMD leaker Greymon55 has now posted more informations via Twitter.

He predicts the first four models of the new Zen 4 desktop generation, which AMD would like to present at the end of 2022. There is also an alleged release date of September 15, 2022.
AMD Ryzen 9 7950X - Cinebench R23 Benchmark projection
AMD Ryzen 9 7950X - Cinebench R23 Benchmark projection
Posted by Stefan on 2022-06-10
We give you a preview of AMD's new Zen 4 desktop processors and calculate the performance of the AMD Ryzen 9 7950X top model for the new AM5 socket. The performance data and other technical details come directly from the press kit that AMD released as part of its Financial Analyst Day on June 9, 2022.

Up to 15 percent more single-core performance and 35 percent more multi-core performance of the 16-core model are realistic !

Comparison of the two processors

Even if it looks like it at first glance, there is only one processor generation between the AMD Ryzen 9 5900X and the AMD Ryzen 9 3900X. The AMD Ryzen 9 5900X was launched in the fourth quarter of 2020, the AMD Ryzen 9 3900X a little more than a year earlier in the third quarter of 2019.

Both processors have 12 physical cores, support hyperthreading and are also overclockable. The difference is in the details, both processors are manufactured in the 7 nanometer process, but the AMD Ryzen 9 5900X is already based on the Zen 3 architecture, whereas the AMD Ryzen 9 3900X is still based on the previous architecture (Zen 2).

The improved architecture allows the processor cores to run faster. With the AMD Ryzen 9 5900X, the base clock frequency of 3.70 gigahertz is slightly lower than that of the AMD Ryzen 9 3900X (3.80 gigahertz), but it can clock higher in turbo mode:

AMD Ryzen 9 5900X = single-core turbo: 4.80 gigahertz / multi-core turbo: 4.50 gigahertz
AMD Ryzen 9 3900X = single-core turbo: 4.60 gigahertz / multi-core turbo: 4.20 gigahertz

Both processors do not have an internal graphics unit, so a dedicated graphics card is required for operation.

There are no differences in the supported memory. Both processors rely on modules of the DDR4 type with a clock frequency of up to 3200 megahertz. The 2 available memory channels are able to work with up to 128 gigabytes of memory and memory with automatic error correction (ECC memory) is supported by both processors.

There is no difference in the L3 cache (64 megabytes each) or in the PCI Express version (4.0) and the number of PCI Express lines (20).

Both processors have a TDP of 105 watts, but in reality the energy consumption ex works is already well over 105 watts.

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