AMD EPYC 7643 vs AMD EPYC Embedded 3451
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CPU comparison with benchmarks
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| AMD EPYC 7643 | AMD EPYC Embedded 3451 | |
CPU comparisonAMD EPYC 7643 or AMD EPYC Embedded 3451 - 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 EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. Up to 4096 GB of memory is supported in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. The AMD EPYC Embedded 3451 has 16 cores with 32 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to 1024 GB of memory in 4 memory channels. The AMD EPYC Embedded 3451 was released in Q1/2018. |
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| AMD EPYC (129) | Family | AMD EPYC (129) |
| AMD EPYC 7003 (29) | CPU group | AMD EPYC Embedded 3000 (7) |
| 3 | Generation | 1 |
| Milan (Zen 3) | Architecture | Snowy Owl (Zen) |
| Desktop / Server | Segment | Desktop / Server |
| AMD EPYC 7642 | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel. The clock frequency of the AMD EPYC 7643 is 2.30 GHz (3.60 GHz) while the AMD EPYC Embedded 3451 has 16 CPU cores and 32 threads can calculate simultaneously. The clock frequency of the AMD EPYC Embedded 3451 is at 2.14 GHz (3.00 GHz). |
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| AMD EPYC 7643 | Characteristic | AMD EPYC Embedded 3451 |
| 48 | Cores | 16 |
| 96 | Threads | 32 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | Yes |
| 2.30 GHz | Frequency | 2.14 GHz |
| 3.60 GHz | Turbo Frequency (1 Core) | 3.00 GHz |
| 3.40 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 7643 can use up to 4096 GB of memory in 8 memory channels. The maximum memory bandwidth is 204.8 GB/s. The AMD EPYC Embedded 3451 supports up to 1024 GB of memory in 4 memory channels and achieves a memory bandwidth of up to 85.3 GB/s. |
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| AMD EPYC 7643 | Characteristic | AMD EPYC Embedded 3451 |
| DDR4-3200 | Memory | DDR4-2666 |
| 4096 GB | Max. Memory | 1024 GB |
| 8 (Octa Channel) | Memory channels | 4 (Quad Channel) |
| 204.8 GB/s | Max. Bandwidth | 85.3 GB/s |
| Yes | ECC | Yes |
| -- | L2 Cache | 8.00 MB |
| 256.00 MB | L3 Cache | 32.00 MB |
| 4.0 | PCIe version | 3.0 |
| 128 | PCIe lanes | 64 |
| 252.0 GB/s | PCIe Bandwidth | 63.0 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7643 is 240 W, while the AMD EPYC Embedded 3451 has a TDP of 100 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD EPYC 7643 | Characteristic | AMD EPYC Embedded 3451 |
| 240 W | TDP (PL1 / PBP) | 100 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| 225 W | TDP down | 80 W |
| -- | Tjunction max. | 105 °C |
Technical detailsThe AMD EPYC 7643 is manufactured in 7 nm and has 256.00 MB cache. The AMD EPYC Embedded 3451 is manufactured in 14 nm and has a 40.00 MB cache. |
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| AMD EPYC 7643 | Characteristic | AMD EPYC Embedded 3451 |
| 7 nm | Technology | 14 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 |
| SP3 | Socket | SP4 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q1/2021 | Release date | Q1/2018 |
| 4995 $ | Release price | -- |
| show more data | show more data | |
48C 96T @ 2.30 GHz (3.60 GHz) buy now on Amazon and save!
16C 32T @ 2.14 GHz (3.00 GHz) buy now on Amazon and save!
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Average performance in benchmarks
⌀ Single core performance in 0 CPU benchmarks
⌀ Multi core performance in 1 CPU benchmarks
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 EPYC 7643
48C 96T @ 3.40 GHz |
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AMD EPYC Embedded 3451
16C 32T @ 2.14 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 EPYC 7643
48C 96T @ 3.60 GHz |
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AMD EPYC Embedded 3451
16C 32T @ 3.00 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 EPYC 7643
48C 96T @ 3.40 GHz |
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AMD EPYC Embedded 3451
16C 32T @ 2.14 GHz |
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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.
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AMD EPYC 7643
48C 96T @ 3.60 GHz |
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AMD EPYC Embedded 3451
16C 32T @ 3.00 GHz |
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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.
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
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AMD EPYC Embedded 3451
16C 32T @ 2.14 GHz |
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Devices using this processor |
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| AMD EPYC 7643 | AMD EPYC Embedded 3451 |
| Unknown | Unknown |
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