AMD Ryzen 7 5800X | AMD Ryzen 9 3900 | |
CPU comparisonIn this CPU comparison, we compare the AMD Ryzen 7 5800X and the AMD Ryzen 9 3900 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 3900 which has 12 CPU cores and was introduced in Q3/2019. |
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AMD Ryzen 7 (63) | 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 7 3800X | Predecessor | -- |
-- | Successor | AMD Ryzen 9 5900 |
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CPU Cores and Base FrequencyThe 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 3900 clocks with 3.10 GHz (4.30 GHz), has 12 CPU cores and can calculate 24 threads in parallel. |
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AMD Ryzen 7 5800X | Characteristic | AMD Ryzen 9 3900 |
8 | Cores | 12 |
16 | Threads | 24 |
normal | Core architecture | normal |
Yes | Hyperthreading | Yes |
Yes | Overclocking ? | Yes |
3.80 GHz | Frequency | 3.10 GHz |
4.70 GHz | Turbo Frequency (1 Core) | 4.30 GHz |
4.40 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeUp 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 3900 supports a maximum of 128 GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled. |
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AMD Ryzen 7 5800X | Characteristic | AMD Ryzen 9 3900 |
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 | No |
4.00 MB | L2 Cache | -- |
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 ManagementThe AMD Ryzen 7 5800X has a TDP of 105 W. The TDP of the AMD Ryzen 9 3900 is 65 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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AMD Ryzen 7 5800X | Characteristic | AMD Ryzen 9 3900 |
105 W | TDP (PL1 / PBP) | 65 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
90 °C | Tjunction max. | 95 °C |
Technical detailsThe AMD Ryzen 7 5800X has 36.00 MB cache and is manufactured in 7 nm. The cache of AMD Ryzen 9 3900 is at 64.00 MB. The processor is manufactured in 7 nm. |
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AMD Ryzen 7 5800X | Characteristic | AMD Ryzen 9 3900 |
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 | |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 3.80 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.70 GHz |
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AMD Ryzen 9 3900
12C 24T @ 4.30 GHz |
AMD Ryzen 7 5800X
8C 16T @ 4.40 GHz |
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AMD Ryzen 9 3900
12C 24T @ 3.10 GHz |
AMD Ryzen 7 5800X
15,228 CB R23 MC @ 119 W |
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AMD Ryzen 9 3900
3.10 GHz |
Devices using this processor |
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AMD Ryzen 7 5800X | AMD Ryzen 9 3900 |
Unknown | Unknown |