AMD Ryzen 7 5800X vs AMD Ryzen 9 3900X

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CPU comparison with benchmarks


AMD Ryzen 7 5800X CPU1 vs CPU2 AMD Ryzen 9 3900X
AMD Ryzen 7 5800X AMD Ryzen 9 3900X

CPU comparison

In this CPU comparison, we compare the AMD Ryzen 7 5800X and the AMD Ryzen 9 3900X and use benchmarks to check which processor is faster.

We compare the AMD Ryzen 7 5800X 8 core processor released in Q4/2020 with the AMD Ryzen 9 3900X which has 12 CPU cores and was introduced in Q3/2019.
AMD Ryzen 7 (67) Family AMD Ryzen 9 (35)
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 7 3800X Predecessor --
-- Successor AMD Ryzen 9 5900X

CPU Cores and Base Frequency

The AMD Ryzen 7 5800X is a 8 core processor with a clock frequency of 3.80 GHz (4.70 GHz). The processor can compute 16 threads at the same time. The AMD Ryzen 9 3900X clocks with 3.80 GHz (4.60 GHz), has 12 CPU cores and can calculate 24 threads in parallel.

AMD Ryzen 7 5800X Characteristic AMD Ryzen 9 3900X
8 Cores 12
16 Threads 24
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? Yes
3.80 GHz Frequency 3.80 GHz
4.70 GHz Turbo Frequency (1 Core) 4.60 GHz
4.40 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 7 5800X Characteristic AMD Ryzen 9 3900X
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

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

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 7 5800X, while the AMD Ryzen 9 3900X supports a maximum of 128 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled.

AMD Ryzen 7 5800X 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
4.00 MB L2 Cache 6.00 MB
32.00 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 AMD Ryzen 7 5800X has a TDP of 105 W. The TDP of the AMD Ryzen 9 3900X is 105 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen 7 5800X Characteristic AMD Ryzen 9 3900X
105 W TDP (PL1 / PBP) 105 W
-- TDP (PL2) 142 W
-- TDP up --
-- TDP down --
90 °C Tjunction max. 95 °C

Technical details

The AMD Ryzen 7 5800X has 36.00 MB cache and is manufactured in 7 nm. The cache of AMD Ryzen 9 3900X is at 70.00 MB. The processor is manufactured in 7 nm.

AMD Ryzen 7 5800X 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
449 $ Release price 485 $
show more data show more data


Rate these processors

Here you can rate the AMD Ryzen 7 5800X to help other visitors make their purchasing decisions. The average rating is 4.4 stars (20 ratings). Rate now:
Here you can rate the AMD Ryzen 9 3900X to help other visitors make their purchasing decisions. The average rating is 3.8 stars (12 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 7 CPU benchmarks
AMD Ryzen 7 5800X (100%)
AMD Ryzen 9 3900X (80%)
⌀ Multi core performance in 9 CPU benchmarks
AMD Ryzen 7 5800X (85%)
AMD Ryzen 9 3900X (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
95 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
78 (82%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
888 (83%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1068 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
1619 (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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
15228 (84%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
18165 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
1728 (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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
11465 (92%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
12454 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
2136 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
1714 (80%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
10940 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
10689 (98%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz
628 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz
502 (80%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
5724 (82%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
6954 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
225 (80%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
281 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
28084 (86%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
32755 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
640 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
536 (84%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 3.80 GHz
6554 (80%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz
8183 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.70 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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz
2611 (82%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz
3168 (100%)

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 7 5800X AMD Ryzen 7 5800X
8C 16T @ 4.40 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 7 5800X AMD Ryzen 7 5800X
15,228 CB R23 MC @ 119 W
128 (100%)
AMD Ryzen 9 3900X AMD Ryzen 9 3900X
3.80 GHz
0 (0%)

Devices using this processor

AMD Ryzen 7 5800X AMD Ryzen 9 3900X
Unknown Unknown

News and articles for the AMD Ryzen 7 5800X 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.
The evolution of AMD Ryzen processors
The evolution of AMD Ryzen processors
Posted by Stefan on 2022-09-06
The AMD Ryzen processors are designed for the mid to high-end range and are grouped into the Ryzen 3, Ryzen 5, Ryzen 7 and Ryzen 9 classes. AMD follows the market leader Intel, which groups its Core i series (Intel Core i3, Core i5, Core i7 and Core i9) identically.

The AMD Ryzen processors were first introduced by AMD in Q1 2017. They are the successor to the not particularly successful AMD Bulldozer processors. The latter were manufactured using an outdated manufacturing process and could not keep up with the competing products from Intel. AMD lost a large portion of its desktop processor market share during this period.
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

Actually, the comparison between an 8-core processor in the form of the AMD Ryzen 7 5800X with that of the 12-core processor AMD Ryzen 9 3900X should be clear, especially since both processors are only 1st generation apart. Since AMD was able to increase the raw performance per clock by up to 20 percent with the Ryzen 5xxx processors (Zen 3 CPU cores), the two processors only separate the two processors by around 20 percent in the end in multi-core benchmarks.

The single-core performance of the smaller AMD Ryzen 7 5800X is even 15 percent higher than that of the bigger brother, even though the turbo clock frequency is only 100 MHz higher than that of the AMD Ryzen 9 3900X. AMD was able to carry out some cache optimizations in Zen 3. In addition, the processors benefit from TSMC's new 5 nm manufacturing technology, which AMD uses to manufacture all of its current processors. Both together have a strong effect on the turbo frequencies, which can be held longer and be stronger.

Although the TDP for both processors is specified as 105 watts, the newer AMD Ryzen 7 5800X is quite a bit more economical than the 12-core processor AMD Ryzen 9 3900X. While the two processors AMD Ryzen 5 3600 and AMD Ryzen 9 3900X were particularly popular in the Ryzen 3xxx desktop series, the AMD Ryzen 7 5800X should also be very much in demand this year. It forms the ideal middle between cheap and expensive and thanks to its high single-core clock and the high IPC, the processor is also ideal for games.

With the Ryzen 5xxx desktop series, AMD is using the aging socket AM4 for the last time. From the end of 2021, AMD would like to serve at least the new DDR5 memory type with the Ryzen 6xxx processors (Zen 4 cores) on a new socket. PCIe 5.0 isn't unrealistic either. Nevertheless, the current Ryzen 5xxx generation is already very fast and, thanks to the modern manufacturing process, efficient.

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