AMD EPYC 9754S vs Qualcomm Snapdragon 821
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CPU comparison with benchmarks
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| AMD EPYC 9754S | Qualcomm Snapdragon 821 | |
CPU comparisonAMD EPYC 9754S or Qualcomm Snapdragon 821 - 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 9754S has 128 cores with 128 threads and clocks with a maximum frequency of 3.10 GHz. Up to 6144 GB of memory is supported in 12 memory channels. The AMD EPYC 9754S was released in Q2/2023. The Qualcomm Snapdragon 821 has 4 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 8 GB of memory in 2 memory channels. The Qualcomm Snapdragon 821 was released in Q3/2016. |
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| AMD EPYC (129) | Family | Qualcomm Snapdragon (103) |
| AMD EPYC 8004/9004 (15) | CPU group | Qualcomm Snapdragon 820 (3) |
| 4 | Generation | 3 |
| Bergamo/Siena (Zen 4c) | Architecture | Kryo |
| Desktop / Server | Segment | Mobile |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 9754S has 128 CPU cores and can calculate 128 threads in parallel. The clock frequency of the AMD EPYC 9754S is 2.25 GHz (3.10 GHz) while the Qualcomm Snapdragon 821 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the Qualcomm Snapdragon 821 is at 2.40 GHz. |
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| AMD EPYC 9754S | Characteristic | Qualcomm Snapdragon 821 |
| 128 | Cores | 4 |
| 128 | Threads | 4 |
| normal | Core architecture | hybrid (big.LITTLE) |
| No | Hyperthreading | No |
| No | Overclocking ? | No |
| 2.25 GHz (3.10 GHz) 128x Zen 4c |
A-Core | 2.40 GHz 2x Kryo |
| -- | B-Core | 1.60 GHz 2x Kryo |
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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| AMD EPYC 9754S | Characteristic | Qualcomm Snapdragon 821 |
| -- | AI hardware | Qualcomm AI engine |
| -- | AI specifications | Hexagon 680 |
| -- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The AMD EPYC 9754S or Qualcomm Snapdragon 821 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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| no iGPU | GPU | Qualcomm Adreno 530 |
| GPU frequency | 0.62 GHz | |
| -- | GPU (Turbo) | 0.62 GHz |
| -- | GPU Generation | 5 |
| Technology | 14 nm | |
| Max. displays | 0 | |
| -- | Compute units | -- |
| -- | Shader | 256 |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| -- | Max. GPU Memory | -- |
| -- | DirectX Version | 11,1 |
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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| no iGPU | GPU | Qualcomm Adreno 530 |
| No | Codec h265 / HEVC (8 bit) | Decode |
| No | Codec h265 / HEVC (10 bit) | No |
| No | Codec h264 | Decode |
| No | Codec VP9 | Decode |
| No | Codec VP8 | Decode |
| No | Codec AV1 | No |
| No | Codec AVC | No |
| No | Codec VC-1 | Decode |
| No | Codec JPEG | Decode |
Memory & PCIeThe AMD EPYC 9754S can use up to 6144 GB of memory in 12 memory channels. The maximum memory bandwidth is 460.8 GB/s. The Qualcomm Snapdragon 821 supports up to 8 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 14.9 GB/s. |
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| AMD EPYC 9754S | Characteristic | Qualcomm Snapdragon 821 |
| DDR5-4800 | Memory | LPDDR4-3733 |
| 6144 GB | Max. Memory | 8 GB |
| 12 | Memory channels | 2 (Dual Channel) |
| 460.8 GB/s | Max. Bandwidth | 14.9 GB/s |
| Yes | ECC | No |
| -- | L2 Cache | -- |
| 256.00 MB | L3 Cache | -- |
| 5.0 | PCIe version | -- |
| 128 | PCIe lanes | -- |
| 504.1 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 9754S is 360 W, while the Qualcomm Snapdragon 821 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD EPYC 9754S | Characteristic | Qualcomm Snapdragon 821 |
| 360 W | TDP (PL1 / PBP) | -- |
| -- | TDP (PL2) | -- |
| 400 W | TDP up | -- |
| 320 W | TDP down | -- |
| 100 °C | Tjunction max. | -- |
Technical detailsThe AMD EPYC 9754S is manufactured in 5 nm and has 256.00 MB cache. The Qualcomm Snapdragon 821 is manufactured in 14 nm and has a 0.00 MB cache. |
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| AMD EPYC 9754S | Characteristic | Qualcomm Snapdragon 821 |
| 5 nm | Technology | 14 nm |
| Chiplet | Chip design | Chiplet |
| x86-64 (64 bit) | Instruction set (ISA) | Armv8-A (64 bit) |
| SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI | ISA extensions | -- |
| SP5 | Socket | -- |
| AMD-V, SVM | Virtualization | None |
| Yes | AES-NI | No |
| Windows Server 2022, Linux, Windows 11 | Operating systems | Android |
| Q2/2023 | Release date | Q3/2016 |
| 10200 $ | Release price | -- |
| show more data | show more data | |
128C 128T @ 2.25 GHz (3.10 GHz) buy now on Amazon and save!
4C 4T @ 2.40 GHz buy now on Amazon and save!
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Rate these processors
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 9754S
128C 128T @ 3.10 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 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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AMD EPYC 9754S
128C 128T @ 3.10 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 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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AMD EPYC 9754S
128C 128T @ 3.10 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 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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AMD EPYC 9754S
128C 128T @ 3.10 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 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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AMD EPYC 9754S
@ 0.00 GHz |
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Qualcomm Snapdragon 821
Qualcomm Adreno 530 @ 0.62 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 9754S
128C 128T @ 3.10 GHz |
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Qualcomm Snapdragon 821
4C 4T @ 2.40 GHz |
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Devices using this processor |
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| AMD EPYC 9754S | Qualcomm Snapdragon 821 |
| Unknown | Unknown |
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