AMD EPYC Embedded 3251 | Apple M1 Ultra (64-GPU) | |
CPU comparisonAMD EPYC Embedded 3251 or Apple M1 Ultra (64-GPU) - 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 Embedded 3251 has 8 cores with 16 threads and clocks with a maximum frequency of 3.10 GHz. Up to GB of memory is supported in 2 memory channels. The AMD EPYC Embedded 3251 was released in Q1/2018. The Apple M1 Ultra (64-GPU) has 20 cores with 20 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to 128 GB of memory in 8 memory channels. The Apple M1 Ultra (64-GPU) was released in Q1/2022. |
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AMD EPYC (129) | Family | Apple M series (25) |
AMD EPYC Embedded 3000 (7) | CPU group | Apple M1 (9) |
1 | Generation | 1 |
Snowy Owl (Zen) | Architecture | M1 |
Desktop / Server | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | Apple M2 Ultra (76-GPU) |
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CPU Cores and Base FrequencyThe AMD EPYC Embedded 3251 has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD EPYC Embedded 3251 is 2.50 GHz (3.10 GHz) while the Apple M1 Ultra (64-GPU) has 20 CPU cores and 20 threads can calculate simultaneously. The clock frequency of the Apple M1 Ultra (64-GPU) is at 0.60 GHz (3.20 GHz). |
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AMD EPYC Embedded 3251 | Characteristic | Apple M1 Ultra (64-GPU) |
8 | Cores | 20 |
16 | Threads | 20 |
normal | Core architecture | hybrid (big.LITTLE) |
Yes | Hyperthreading | No |
Yes | Overclocking ? | No |
2.50 GHz (3.10 GHz) | A-Core | 0.60 GHz (3.20 GHz) 16x Firestorm |
-- | B-Core | 0.60 GHz (2.06 GHz) 4x Icestorm |
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 Embedded 3251 | Characteristic | Apple M1 Ultra (64-GPU) |
-- | AI hardware | Apple Neural Engine |
-- | AI specifications | 32 Neural cores @ 22 TOPS |
-- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The AMD EPYC Embedded 3251 or Apple M1 Ultra (64-GPU) 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 | Apple M1 Ultra (64 Core) |
GPU frequency | 0.39 GHz | |
-- | GPU (Turbo) | 1.30 GHz |
-- | GPU Generation | 1 |
Technology | 5 nm | |
Max. displays | 5 | |
-- | Compute units | 1024 |
-- | Shader | 8192 |
No | Hardware Raytracing | No |
No | Frame Generation | No |
-- | Max. GPU Memory | 64 GB |
-- | 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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no iGPU | GPU | Apple M1 Ultra (64 Core) |
No | Codec h265 / HEVC (8 bit) | Decode / Encode |
No | Codec h265 / HEVC (10 bit) | Decode / Encode |
No | Codec h264 | Decode / Encode |
No | Codec VP9 | Decode / Encode |
No | Codec VP8 | Decode |
No | Codec AV1 | No |
No | Codec AVC | Decode |
No | Codec VC-1 | Decode |
No | Codec JPEG | Decode / Encode |
Memory & PCIeThe AMD EPYC Embedded 3251 can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 42.7 GB/s. The Apple M1 Ultra (64-GPU) supports up to 128 GB of memory in 8 memory channels and achieves a memory bandwidth of up to 819.2 GB/s. |
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AMD EPYC Embedded 3251 | Characteristic | Apple M1 Ultra (64-GPU) |
DDR4-2666 | Memory | LPDDR5-6400 |
Max. Memory | 128 GB | |
2 (Dual Channel) | Memory channels | 8 (Octa Channel) |
42.7 GB/s | Max. Bandwidth | 819.2 GB/s |
Yes | ECC | No |
4.00 MB | L2 Cache | 52.00 MB |
16.00 MB | L3 Cache | -- |
3.0 | PCIe version | 4.0 |
32 | PCIe lanes | -- |
31.5 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC Embedded 3251 is 55 W, while the Apple M1 Ultra (64-GPU) has a TDP of 60 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD EPYC Embedded 3251 | Characteristic | Apple M1 Ultra (64-GPU) |
55 W | TDP (PL1 / PBP) | 60 W |
-- | TDP (PL2) | -- |
-- | TDP up | 120 W |
-- | TDP down | -- |
105 °C | Tjunction max. | -- |
Technical detailsThe AMD EPYC Embedded 3251 is manufactured in 14 nm and has 20.00 MB cache. The Apple M1 Ultra (64-GPU) is manufactured in 5 nm and has a 52.00 MB cache. |
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AMD EPYC Embedded 3251 | Characteristic | Apple M1 Ultra (64-GPU) |
14 nm | Technology | 5 nm |
Chiplet | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | Armv8.5-A (64 bit) |
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | Rosetta 2 x86-Emulation |
SP4r2 | Socket | -- |
AMD-V, SVM | Virtualization | Apple Virtualization Framework |
Yes | AES-NI | Yes |
Windows 10, Linux | Operating systems | macOS |
Q1/2018 | Release date | Q1/2022 |
-- | Release price | -- |
show more data | show more data | |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 3.10 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 3.10 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 3.10 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 3.10 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 3.10 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
@ 0.00 GHz |
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Apple M1 Ultra (64-GPU)
Apple M1 Ultra (64 Core) @ 1.30 GHz |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 3.20 GHz |
AMD EPYC Embedded 3251
8C 16T @ 2.50 GHz |
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Apple M1 Ultra (64-GPU)
20C 20T @ 0.60 GHz |
Devices using this processor |
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AMD EPYC Embedded 3251 | Apple M1 Ultra (64-GPU) |
Unknown | Apple Mac Studio (2022) |