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AMD Ryzen 9 5900X vs AMD Ryzen 9 3900X
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CPU comparison with benchmarks
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| AMD Ryzen 9 5900X | AMD Ryzen 9 3900X | |
CPU comparisonAMD 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. |
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| AMD Ryzen 9 (47) | Family | AMD Ryzen 9 (47) |
| AMD Ryzen 5000 (16) | CPU group | AMD Ryzen 3000 (15) |
| 4 | Generation | 3 |
| Vermeer (Zen 3) | Architecture | Matisse (Zen 2) |
| Desktop | Segment | Desktop |
| AMD Ryzen 9 3900X | Predecessor | -- |
| AMD Ryzen 9 7900X | Successor | AMD Ryzen 9 5900X |
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CPU Cores and Base FrequencyThe 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). |
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| 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 |
Memory & PCIeThe 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. |
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| 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 ManagementThe 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. |
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| 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 detailsThe AMD Ryzen 9 5900X has a 70.00 MB cache, while the AMD Ryzen 9 3900X cache has a total of 70.00 MB. |
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| 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 | 499 $ |
| show more data | show more data | |
12C 24T @ 3.70 GHz (4.80 GHz) buy now on Amazon and save!
12C 24T @ 3.80 GHz (4.60 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 7 CPU benchmarks
⌀ Multi core performance in 9 CPU benchmarks
Price-performance ratio
Geekbench 6 multi-core score divided by the processor's release price. Higher is better.
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AMD Ryzen 9 5900X
Geekbench 6 MT: 12,420 / 549 $ |
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AMD Ryzen 9 3900X
Geekbench 6 MT: 10,689 / 499 $ |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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Geekbench 6 Single-Core
Geekbench 6 is a partial load benchmark for modern computers, notebooks and smartphones. In the single-core test, only the fastest CPU core is measured. The test run simulates the performance in practice.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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Geekbench 6 Multi-Core
The practical Geekbench 6 multi-core benchmark tests the system's performance under partial load. The processor's maximum power consumption is far from being used up.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 3.70 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 3.80 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.80 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.60 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
12C 24T @ 4.50 GHz |
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AMD Ryzen 9 3900X
12C 24T @ 4.00 GHz |
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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.
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AMD Ryzen 9 5900X
21,878 CB R23 MC @ 131 W |
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AMD Ryzen 9 3900X
3.80 GHz |
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Devices using this processor |
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| 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
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 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
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.
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
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.
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
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 !
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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