HiSilicon Kirin 955 vs AMD EPYC 7742
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CPU comparison with benchmarks
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| HiSilicon Kirin 955 | AMD EPYC 7742 | |
CPU comparisonHiSilicon Kirin 955 or AMD EPYC 7742 - 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 HiSilicon Kirin 955 has 8 cores with 8 threads and clocks with a maximum frequency of 2.50 GHz. Up to GB of memory is supported in 2 memory channels. The HiSilicon Kirin 955 was released in Q2/2016. The AMD EPYC 7742 has 64 cores with 128 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 8 memory channels. The AMD EPYC 7742 was released in Q3/2019. |
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| HiSilicon Kirin (29) | Family | AMD EPYC (129) |
| HiSilicon Kirin 950 (2) | CPU group | AMD EPYC 7002 (24) |
| 4 | Generation | 2 |
| Cortex-A72 / Cortex-A53 | Architecture | Rome (Zen 2) |
| Mobile | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe HiSilicon Kirin 955 is a 8 core processor with a clock frequency of 2.50 GHz. The AMD EPYC 7742 has 64 CPU cores with a clock frequency of 2.25 GHz (3.40 GHz). |
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| HiSilicon Kirin 955 | Characteristic | AMD EPYC 7742 |
| 8 | Cores | 64 |
| 8 | Threads | 128 |
| hybrid (big.LITTLE) | Core architecture | normal |
| No | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 2.50 GHz 4x Cortex-A72 |
A-Core | 2.25 GHz (3.40 GHz) |
| 1.80 GHz 4x Cortex-A53 |
B-Core | -- |
Internal GraphicsThe integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs. |
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| ARM Mali-T880 MP4 | GPU | no iGPU |
| 0.90 GHz | GPU frequency | -- |
| 0.90 GHz | GPU (Turbo) | -- |
| Midgard 4 | GPU Generation | -- |
| 16 nm | Technology | |
| 2 | Max. displays | |
| 4 | Compute units | -- |
| 64 | Shader | -- |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| -- | Max. GPU Memory | -- |
| 11 | DirectX Version | -- |
Hardware codec supportA 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. |
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| ARM Mali-T880 MP4 | GPU | no iGPU |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | No |
| No | Codec VP9 | No |
| Decode / Encode | Codec VP8 | No |
| No | Codec AV1 | No |
| No | Codec AVC | No |
| No | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe HiSilicon Kirin 955 supports a maximum of GB of memory in 2 memory channels. The AMD EPYC 7742 can connect up to GB of memory in 8 memory channels. |
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| HiSilicon Kirin 955 | Characteristic | AMD EPYC 7742 |
| LPDDR4, LPDDR3 | Memory | DDR4-3200 |
| Max. Memory | ||
| 2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
| -- | Max. Bandwidth | 51.2 GB/s |
| No | ECC | Yes |
| -- | L2 Cache | -- |
| -- | L3 Cache | 256.00 MB |
| -- | PCIe version | 4.0 |
| -- | PCIe lanes | 128 |
| -- | PCIe Bandwidth | 252.0 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The HiSilicon Kirin 955 has a TDP of --, that of the AMD EPYC 7742 is 225 W. |
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| HiSilicon Kirin 955 | Characteristic | AMD EPYC 7742 |
| -- | TDP (PL1 / PBP) | 225 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe HiSilicon Kirin 955 has a 0.00 MB cache, while the AMD EPYC 7742 cache has a total of 256.00 MB. |
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| HiSilicon Kirin 955 | Characteristic | AMD EPYC 7742 |
| 16 nm | Technology | 7 nm |
| Chiplet | Chip design | Chiplet |
| Armv8-A (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| -- | ISA extensions | SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 |
| -- | Socket | SP3 |
| None | Virtualization | AMD-V, SVM |
| No | AES-NI | Yes |
| Android | Operating systems | Windows 10, Linux |
| Q2/2016 | Release date | Q3/2019 |
| -- | Release price | 9000 $ |
| show more data | show more data | |
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64C 128T @ 2.25 GHz (3.40 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 1 CPU benchmarks
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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 3.40 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 2.80 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 3.40 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 3.40 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 2.80 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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HiSilicon Kirin 955
ARM Mali-T880 MP4 @ 0.90 GHz |
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AMD EPYC 7742
@ 0.00 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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HiSilicon Kirin 955
8C 8T @ 2.50 GHz |
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AMD EPYC 7742
64C 128T @ 2.80 GHz |
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Devices using this processor |
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| HiSilicon Kirin 955 | AMD EPYC 7742 |
| Unknown | Unknown |
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