AMD EPYC 7551P vs Apple A9X

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CPU comparison with benchmarks


AMD EPYC 7551P CPU1 vs CPU2 Apple A9X
AMD EPYC 7551P Apple A9X

CPU comparison

AMD EPYC 7551P or Apple A9X - 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 7551P has 32 cores with 64 threads and clocks with a maximum frequency of 3.00 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7551P was released in Q3/2017.

The Apple A9X has 2 cores with 2 threads and clocks with a maximum frequency of 2.26 GHz. The CPU supports up to 4 GB of memory in 2 memory channels. The Apple A9X was released in Q3/2015.
AMD EPYC (129) Family Apple A series (22)
AMD EPYC 7001 (12) CPU group Apple A9/A9X (2)
1 Generation 9
Naples (Zen) Architecture A9
Desktop / Server Segment Mobile
-- Predecessor Apple A8X
-- Successor Apple A10X Fusion

CPU Cores and Base Frequency

The AMD EPYC 7551P is a 32 core processor with a clock frequency of 2.00 GHz (3.00 GHz). The Apple A9X has 2 CPU cores with a clock frequency of 2.26 GHz.

AMD EPYC 7551P Characteristic Apple A9X
32 Cores 2
64 Threads 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
2.00 GHz Frequency 2.26 GHz
3.00 GHz Turbo Frequency (1 Core) --
2.55 GHz Turbo Frequency (All Cores) --

NPU AI performance

The 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.

AMD EPYC 7551P Characteristic Apple A9X
-- AI hardware --
-- 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.

no iGPU GPU Apple A9X
GPU frequency 0.65 GHz
-- GPU (Turbo) --
-- GPU Generation 6
Technology 16 nm
Max. displays 1
-- Compute units 48
-- Shader 384
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 4 GB
-- DirectX Version --

Hardware codec support

A 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.

no iGPU GPU Apple A9X
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 Decode
No Codec AV1 No
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The AMD EPYC 7551P supports a maximum of GB of memory in 8 memory channels. The Apple A9X can connect up to 4 GB of memory in 2 memory channels.

AMD EPYC 7551P Characteristic Apple A9X
DDR4-2666 Memory LPDDR4-3200
Max. Memory 4 GB
8 (Octa Channel) Memory channels 2 (Dual Channel)
170.6 GB/s Max. Bandwidth 51.2 GB/s
Yes ECC No
-- L2 Cache 3.00 MB
64.00 MB L3 Cache 4.00 MB
3.0 PCIe version --
128 PCIe lanes --
126.1 GB/s PCIe Bandwidth --

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD EPYC 7551P has a TDP of 180 W, that of the Apple A9X is 8 W.

AMD EPYC 7551P Characteristic Apple A9X
180 W TDP (PL1 / PBP) 8 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD EPYC 7551P has a 64.00 MB cache, while the Apple A9X cache has a total of 7.00 MB.

AMD EPYC 7551P Characteristic Apple A9X
14 nm Technology 16 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions --
SP3 Socket --
AMD-V, SVM Virtualization None
Yes AES-NI No
Windows 10, Linux Operating systems iOS
Q3/2017 Release date Q3/2015
2750 $ Release price --
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD EPYC 7551P (97%)
Apple A9X (92%)
⌀ Multi core performance in 3 CPU benchmarks
AMD EPYC 7551P (100%)
Apple A9X (15%)

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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 3.00 GHz
611 (94%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
652 (100%)

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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 2.55 GHz
6676 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
1198 (18%)

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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 3.00 GHz
904 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
763 (84%)

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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 2.55 GHz
5964 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
1251 (21%)

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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 2.55 GHz
40149 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
2501 (6%)

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.
AMD EPYC 7551P AMD EPYC 7551P
@ 0.00 GHz
0 (0%)
Apple A9X Apple A9X
Apple A9X @ 0.65 GHz
499 (100%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 2.00 GHz
0 (0%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
272103 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 3.00 GHz
132 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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.
AMD EPYC 7551P AMD EPYC 7551P
32C 64T @ 2.55 GHz
3838 (100%)
Apple A9X Apple A9X
2C 2T @ 2.26 GHz
0 (0%)

Devices using this processor

AMD EPYC 7551P Apple A9X
Unknown Apple iPad Pro (1. Gen)

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