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AMD EPYC 7742 vs AMD EPYC 7642
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CPU comparison with benchmarks
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| AMD EPYC 7742 | AMD EPYC 7642 | |
CPU comparisonIn this CPU comparison, we compare the AMD EPYC 7742 and the AMD EPYC 7642 and use benchmarks to check which processor is faster.
We compare the AMD EPYC 7742 64 core processor released in Q3/2019 with the AMD EPYC 7642 which has 48 CPU cores and was introduced in Q3/2019. |
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| AMD EPYC (145) | Family | AMD EPYC (145) |
| AMD EPYC 7002 (24) | CPU group | AMD EPYC 7002 (24) |
| 2 | Generation | 2 |
| Rome (Zen 2) | Architecture | Rome (Zen 2) |
| Server | Segment | Server |
| -- | Predecessor | -- |
| -- | Successor | AMD EPYC 7643 |
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CPU Cores and Base FrequencyThe AMD EPYC 7742 is a 64 core processor with a clock frequency of 2.25 GHz (3.40 GHz). The processor can compute 128 threads at the same time. The AMD EPYC 7642 clocks with 2.30 GHz (3.30 GHz), has 48 CPU cores and can calculate 96 threads in parallel. |
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| AMD EPYC 7742 | Characteristic | AMD EPYC 7642 |
| 64 | Cores | 48 |
| 128 | Threads | 96 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 2.25 GHz | Frequency | 2.30 GHz |
| 3.40 GHz | Turbo Frequency (1 Core) | 3.30 GHz |
| 2.80 GHz | Turbo Frequency (All Cores) | 2.80 GHz |
Memory & PCIeUp to GB of memory in a maximum of 8 memory channels is supported by the AMD EPYC 7742, while the AMD EPYC 7642 supports a maximum of GB of memory with a maximum memory bandwidth of 51.2 GB/s enabled. |
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| AMD EPYC 7742 | Characteristic | AMD EPYC 7642 |
| DDR4-3200 | Memory | DDR4-3200 |
| Max. Memory | ||
| 8 (Octa Channel) | Memory channels | 8 (Octa Channel) |
| 51.2 GB/s | Max. Bandwidth | 51.2 GB/s |
| Yes | ECC | Yes |
| -- | L2 Cache | -- |
| 256.00 MB | L3 Cache | 256.00 MB |
| 4.0 | PCIe version | 4.0 |
| 128 | PCIe lanes | 128 |
| 252.0 GB/s | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe AMD EPYC 7742 has a TDP of 225 W. The TDP of the AMD EPYC 7642 is 225 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| AMD EPYC 7742 | Characteristic | AMD EPYC 7642 |
| 225 W | TDP (PL1 / PBP) | 225 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7742 has 256.00 MB cache and is manufactured in 7 nm. The cache of AMD EPYC 7642 is at 256.00 MB. The processor is manufactured in 7 nm. |
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| AMD EPYC 7742 | Characteristic | AMD EPYC 7642 |
| 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 |
| SP3 | Socket | SP3 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q3/2019 | Release date | Q3/2019 |
| 9000 $ | Release price | 8000 $ |
| show more data | show more data | |
64C 128T @ 2.25 GHz (3.40 GHz) buy now on Amazon and save!
48C 96T @ 2.30 GHz (3.30 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 3 CPU benchmarks
⌀ Multi core performance in 3 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 EPYC 7742
Geekbench 6 MT: 13,647 / 9000 $ |
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AMD EPYC 7642
Geekbench 6 MT: 15,647 / 8000 $ |
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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 EPYC 7742
64C 128T @ 3.40 GHz |
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AMD EPYC 7642
48C 96T @ 3.30 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 EPYC 7742
64C 128T @ 2.80 GHz |
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AMD EPYC 7642
48C 96T @ 2.80 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 7742
64C 128T @ 3.40 GHz |
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AMD EPYC 7642
48C 96T @ 3.30 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 7742
64C 128T @ 2.80 GHz |
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AMD EPYC 7642
48C 96T @ 2.80 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 EPYC 7742
64C 128T @ 3.40 GHz |
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AMD EPYC 7642
48C 96T @ 3.30 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 EPYC 7742
64C 128T @ 2.80 GHz |
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AMD EPYC 7642
48C 96T @ 2.80 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 EPYC 7742
64C 128T @ 2.80 GHz |
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AMD EPYC 7642
48C 96T @ 2.80 GHz |
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Devices using this processor |
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| AMD EPYC 7742 | AMD EPYC 7642 |
| Unknown | Unknown |
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