Qualcomm Snapdragon 8cx Gen 3 vs AMD EPYC 7643
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CPU comparison with benchmarks
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| Qualcomm Snapdragon 8cx Gen 3 | AMD EPYC 7643 | |
CPU comparisonQualcomm Snapdragon 8cx Gen 3 or AMD EPYC 7643 - 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 Qualcomm Snapdragon 8cx Gen 3 has 8 cores with 8 threads and clocks with a maximum frequency of 3.00 GHz. Up to 32 GB of memory is supported in 8 memory channels. The Qualcomm Snapdragon 8cx Gen 3 was released in Q1/2022. The AMD EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. The CPU supports up to 4096 GB of memory in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021. |
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| Qualcomm Snapdragon (104) | Family | AMD EPYC (129) |
| Qualcomm Snapdragon 8cx Gen 3 (1) | CPU group | AMD EPYC 7003 (29) |
| 3 | Generation | 3 |
| Cortex-X1 / Cortex-A78 | Architecture | Milan (Zen 3) |
| Mobile | Segment | Desktop / Server |
| Qualcomm Snapdragon 8cx Gen. 2 | Predecessor | AMD EPYC 7642 |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Qualcomm Snapdragon 8cx Gen 3 is a 8 core processor with a clock frequency of 3.00 GHz. The AMD EPYC 7643 has 48 CPU cores with a clock frequency of 2.30 GHz (3.60 GHz). |
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| Qualcomm Snapdragon 8cx Gen 3 | Characteristic | AMD EPYC 7643 |
| 8 | Cores | 48 |
| 8 | Threads | 96 |
| hybrid (big.LITTLE) | Core architecture | normal |
| No | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 3.00 GHz 4x Kryo 680 Prime |
A-Core | 2.30 GHz (3.60 GHz) 48x Zen 3 |
| 2.42 GHz 4x Kryo 680 Gold |
B-Core | -- |
NPU AI performanceThe performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. |
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| Qualcomm Snapdragon 8cx Gen 3 | Characteristic | AMD EPYC 7643 |
| Qualcomm AI engine | AI hardware | -- |
| Hexagon | AI specifications | -- |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The 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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| Qualcomm Adreno 690 | GPU | no iGPU |
| GPU frequency | -- | |
| -- | GPU (Turbo) | -- |
| 6 | GPU Generation | -- |
| 7 nm | Technology | |
| 0 | Max. displays | |
| -- | Compute units | -- |
| -- | Shader | -- |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| -- | Max. GPU Memory | -- |
| 12.0 | 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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| Qualcomm Adreno 690 | GPU | no iGPU |
| Decode / Encode | Codec h265 / HEVC (8 bit) | No |
| Decode / Encode | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | No |
| Decode | Codec VP9 | No |
| Decode / Encode | Codec VP8 | No |
| No | Codec AV1 | No |
| Decode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe Qualcomm Snapdragon 8cx Gen 3 supports a maximum of 32 GB of memory in 8 memory channels. The AMD EPYC 7643 can connect up to 4096 GB of memory in 8 memory channels. |
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| Qualcomm Snapdragon 8cx Gen 3 | Characteristic | AMD EPYC 7643 |
| LPDDR4X-4266 | Memory | DDR4-3200 |
| 32 GB | Max. Memory | 4096 GB |
| 8 (Octa Channel) | Memory channels | 8 (Octa Channel) |
| 68.2 GB/s | Max. Bandwidth | 204.8 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 Qualcomm Snapdragon 8cx Gen 3 has a TDP of 7 W, that of the AMD EPYC 7643 is 240 W. |
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| Qualcomm Snapdragon 8cx Gen 3 | Characteristic | AMD EPYC 7643 |
| 7 W | TDP (PL1 / PBP) | 240 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | 225 W |
| -- | Tjunction max. | -- |
Technical detailsThe Qualcomm Snapdragon 8cx Gen 3 has a 0.00 MB cache, while the AMD EPYC 7643 cache has a total of 256.00 MB. |
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| Qualcomm Snapdragon 8cx Gen 3 | Characteristic | AMD EPYC 7643 |
| 5 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, Windows 10 (ARM) | Operating systems | Windows 10, Linux |
| Q1/2022 | Release date | Q1/2021 |
| -- | Release price | 4995 $ |
| show more data | show more data | |
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48C 96T @ 2.30 GHz (3.60 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.60 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 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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Qualcomm Snapdragon 8cx Gen 3
8C 8T @ 3.00 GHz |
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AMD EPYC 7643
48C 96T @ 3.40 GHz |
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Devices using this processor |
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| Qualcomm Snapdragon 8cx Gen 3 | AMD EPYC 7643 |
| Unknown | Unknown |
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