Apple M3 (8-GPU) vs AMD EPYC 9645
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Note: The information shown below is based on rumors and unoffical information. Technical details or benchmark results may be different in the final version of this processor. |
CPU comparison with benchmarks
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| Apple M3 (8-GPU) | AMD EPYC 9645 | |
CPU comparisonApple M3 (8-GPU) or AMD EPYC 9645 - 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 Apple M3 (8-GPU) has 8 cores with 8 threads and clocks with a maximum frequency of 4.06 GHz. Up to 24 GB of memory is supported in 2 memory channels. The Apple M3 (8-GPU) was released in Q4/2023. The AMD EPYC 9645 has 96 cores with 192 threads and clocks with a maximum frequency of 2.10 GHz. The CPU supports up to 6144 GB of memory in 12 memory channels. The AMD EPYC 9645 was released in Q4/2024. |
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| Apple M series (25) | Family | AMD EPYC (129) |
| Apple M3 (6) | CPU group | AMD EPYC 9005 (21) |
| 3 | Generation | 5 |
| M3 | Architecture | Turin (Zen 5 / Zen 5c) |
| Mobile | Segment | Desktop / Server |
| Apple M2 (8-GPU) | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Apple M3 (8-GPU) is a 8 core processor with a clock frequency of 0.70 GHz (4.06 GHz). The AMD EPYC 9645 has 96 CPU cores with a clock frequency of 2.10 GHz. |
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| Apple M3 (8-GPU) | Characteristic | AMD EPYC 9645 |
| 8 | Cores | 96 |
| 8 | Threads | 192 |
| hybrid (big.LITTLE) | Core architecture | normal |
| No | Hyperthreading | Yes |
| No | Overclocking ? | No |
| 0.70 GHz (4.06 GHz) 4x P-Core |
A-Core | 2.10 GHz 96x Zen 5 |
| 0.74 GHz (2.75 GHz) 4x E-Core |
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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| Apple M3 (8-GPU) | Characteristic | AMD EPYC 9645 |
| Apple Neural Engine | AI hardware | -- |
| 16 Neural cores @ 35 TOPS | 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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| Apple M3 (8 Core) | GPU | no iGPU |
| 0.39 GHz | GPU frequency | -- |
| 1.40 GHz | GPU (Turbo) | -- |
| -- | GPU Generation | -- |
| 3 nm | Technology | |
| 2 | Max. displays | |
| 128 | Compute units | -- |
| 1024 | Shader | -- |
| Yes | Hardware Raytracing | No |
| No | Frame Generation | No |
| 24 GB | Max. GPU Memory | -- |
| -- | 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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| Apple M3 (8 Core) | 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 / Encode | Codec VP9 | No |
| Decode | Codec VP8 | No |
| Decode | Codec AV1 | No |
| Decode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| Decode / Encode | Codec JPEG | No |
Memory & PCIeThe Apple M3 (8-GPU) supports a maximum of 24 GB of memory in 2 memory channels. The AMD EPYC 9645 can connect up to 6144 GB of memory in 12 memory channels. |
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| Apple M3 (8-GPU) | Characteristic | AMD EPYC 9645 |
| LPDDR5-6400 | Memory | DDR5-6000 |
| 24 GB | Max. Memory | 6144 GB |
| 2 (Dual Channel) | Memory channels | 12 |
| 102.4 GB/s | Max. Bandwidth | 480.0 GB/s |
| No | ECC | Yes |
| 20.00 MB | L2 Cache | -- |
| -- | L3 Cache | 384.00 MB |
| 4.0 | PCIe version | 5.0 |
| -- | PCIe lanes | 128 |
| -- | PCIe Bandwidth | 504.1 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Apple M3 (8-GPU) has a TDP of 22 W, that of the AMD EPYC 9645 is 320 W. |
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| Apple M3 (8-GPU) | Characteristic | AMD EPYC 9645 |
| 22 W | TDP (PL1 / PBP) | 320 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| 10 W | TDP down | -- |
| 100 °C | Tjunction max. | 100 °C |
Technical detailsThe Apple M3 (8-GPU) has a 20.00 MB cache, while the AMD EPYC 9645 cache has a total of 384.00 MB. |
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| Apple M3 (8-GPU) | Characteristic | AMD EPYC 9645 |
| 3 nm | Technology | 4 nm |
| Chiplet | Chip design | Chiplet |
| Armv8-A (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| Rosetta 2 x86-Emulation | ISA extensions | SSE4.2, AVX2, AVX-512, BFLOAT16, VNNI |
| -- | Socket | SP5 |
| Apple Virtualization Framework | Virtualization | AMD-V, SVM |
| Yes | AES-NI | Yes |
| macOS, iPadOS | Operating systems | Windows Server 2022, Linux, Windows 11 |
| Q4/2023 | Release date | Q4/2024 |
| -- | Release price | -- |
| show more data | show more data | |
8C 8T @ 0.70 GHz (4.06 GHz) buy now on Amazon and save!
96C 192T @ 2.10 GHz buy now on Amazon and save!
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Rate these processors
Cinebench 2024 (Single-Core)
The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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Cinebench 2024 (Multi-Core)
The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
8C 8T @ 4.06 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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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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Apple M3 (8-GPU)
Apple M3 (8 Core) @ 1.40 GHz |
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AMD EPYC 9645
@ 0.00 GHzNot verified |
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CPU performance per watt (efficiency)
Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
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Apple M3 (8-GPU)
10,437 CB R23 MC @ 22 W |
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AMD EPYC 9645
2.10 GHz Not verified |
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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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Apple M3 (8-GPU)
8C 8T @ 0.70 GHz |
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AMD EPYC 9645
96C 192T @ 2.10 GHzNot verified |
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Devices using this processor |
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| Apple M3 (8-GPU) | AMD EPYC 9645 |
| Apple iMac 24 (2023) | Unknown |
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