AMD Ryzen 9 7940H vs AMD EPYC 9684X
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CPU comparison with benchmarks
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| AMD Ryzen 9 7940H | AMD EPYC 9684X | |
CPU comparisonAMD Ryzen 9 7940H or AMD EPYC 9684X - 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 Ryzen 9 7940H has 8 cores with 16 threads and clocks with a maximum frequency of 5.20 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 9 7940H was released in Q1/2023. The AMD EPYC 9684X has 96 cores with 192 threads and clocks with a maximum frequency of 3.70 GHz. The CPU supports up to 6144 GB of memory in 12 memory channels. The AMD EPYC 9684X was released in Q2/2023. |
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| AMD Ryzen 9 (40) | Family | AMD EPYC (129) |
| AMD Ryzen 7040 (21) | CPU group | AMD EPYC 9004 (21) |
| 6 | Generation | 4 |
| Phoenix (Zen 4) | Architecture | Genoa / Genoa-X (Zen 4) |
| Mobile | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Ryzen 9 7940H is a 8 core processor with a clock frequency of 4.00 GHz (5.20 GHz). The AMD EPYC 9684X has 96 CPU cores with a clock frequency of 2.55 GHz (3.70 GHz). |
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| AMD Ryzen 9 7940H | Characteristic | AMD EPYC 9684X |
| 8 | Cores | 96 |
| 16 | Threads | 192 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 4.00 GHz | Frequency | 2.55 GHz |
| 5.20 GHz | Turbo Frequency (1 Core) | 3.70 GHz |
| -- | Turbo Frequency (All Cores) | 3.42 GHz |
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 Ryzen 9 7940H | Characteristic | AMD EPYC 9684X |
| AMD Ryzen™ AI | AI hardware | -- |
| AMD dedicated AI XDNA Technology | 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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| AMD Radeon 780M | GPU | no iGPU |
| 0.80 GHz | GPU frequency | -- |
| 2.80 GHz | GPU (Turbo) | -- |
| 3 | GPU Generation | -- |
| 4 nm | Technology | |
| 4 | Max. displays | |
| 12 | Compute units | -- |
| 768 | Shader | -- |
| Yes | Hardware Raytracing | No |
| AMD FSR | Frame Generation | No |
| 32 GB | Max. GPU Memory | -- |
| 12 | 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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| AMD Radeon 780M | 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 | Codec VP8 | No |
| Decode / Encode | Codec AV1 | No |
| Decode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe AMD Ryzen 9 7940H supports a maximum of 256 GB of memory in 2 memory channels. The AMD EPYC 9684X can connect up to 6144 GB of memory in 12 memory channels. |
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| AMD Ryzen 9 7940H | Characteristic | AMD EPYC 9684X |
| DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500 | Memory | DDR5-4800 |
| 256 GB | Max. Memory | 6144 GB |
| 2 (Dual Channel) | Memory channels | 12 |
| 120.0 GB/s | Max. Bandwidth | 460.8 GB/s |
| Yes | ECC | Yes |
| 8.00 MB | L2 Cache | -- |
| 16.00 MB | L3 Cache | 1,152.00 MB |
| 4.0 | PCIe version | 5.0 |
| 20 | PCIe lanes | 128 |
| 39.4 GB/s | PCIe Bandwidth | 504.1 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Ryzen 9 7940H has a TDP of 54 W, that of the AMD EPYC 9684X is 400 W. |
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| AMD Ryzen 9 7940H | Characteristic | AMD EPYC 9684X |
| 54 W | TDP (PL1 / PBP) | 400 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| 35 W | TDP down | 320 W |
| 100 °C | Tjunction max. | 100 °C |
Technical detailsThe AMD Ryzen 9 7940H has a 24.00 MB cache, while the AMD EPYC 9684X cache has a total of 1,152.00 MB. |
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| AMD Ryzen 9 7940H | Characteristic | AMD EPYC 9684X |
| 4 nm | Technology | 5 nm |
| Monolithic | Chip design | Chiplet |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 | ISA extensions | SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI |
| FP8 | Socket | SP5 |
| AMD-V, SVM | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| Windows 10, Windows 11, Linux | Operating systems | Windows Server 2022, Linux, Windows 11 |
| Q1/2023 | Release date | Q2/2023 |
| -- | Release price | 14756 $ |
| show more data | show more data | |
8C 16T @ 4.00 GHz (5.20 GHz) buy now on Amazon and save!
96C 192T @ 2.55 GHz (3.70 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 Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD EPYC 9684X
96C 192T @ 3.70 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 Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD EPYC 9684X
96C 192T @ 3.42 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 Ryzen 9 7940H
8C 16T @ 5.20 GHz |
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AMD EPYC 9684X
96C 192T @ 3.70 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 Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD EPYC 9684X
96C 192T @ 3.42 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 Ryzen 9 7940H
AMD Radeon 780M @ 2.80 GHz |
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AMD EPYC 9684X
@ 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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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD EPYC 9684X
96C 192T @ 3.42 GHz |
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AI performance (NPU)
The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
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AMD Ryzen 9 7940H
8C 16T @ 4.00 GHz |
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AMD EPYC 9684X
96C 192T @ 2.55 GHz |
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Devices using this processor |
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| AMD Ryzen 9 7940H | AMD EPYC 9684X |
| Unknown | Unknown |
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