Apple A15 Bionic (4-GPU) vs Intel Xeon Silver 4108

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CPU comparison with benchmarks


Apple A15 Bionic (4-GPU) CPU1 vs CPU2 Intel Xeon Silver 4108
Apple A15 Bionic (4-GPU) Intel Xeon Silver 4108

CPU comparison

Apple A15 Bionic (4-GPU) or Intel Xeon Silver 4108 - 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 A15 Bionic (4-GPU) has 6 cores with 6 threads and clocks with a maximum frequency of 3.23 GHz. Up to 6 GB of memory is supported in 1 memory channels. The Apple A15 Bionic (4-GPU) was released in Q3/2021.

The Intel Xeon Silver 4108 has 8 cores with 16 threads and clocks with a maximum frequency of 3.00 GHz. The CPU supports up to 768 GB of memory in 6 memory channels. The Intel Xeon Silver 4108 was released in Q3/2017.
Apple A series (22) Family Intel Xeon Silver (32)
Apple A15 (2) CPU group Intel Xeon Silver 4100 (8)
15 Generation 1
A15 Architecture Skylake SP
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor Intel Xeon Silver 4208

CPU Cores and Base Frequency

The Apple A15 Bionic (4-GPU) is a 6 core processor with a clock frequency of 3.23 GHz. The Intel Xeon Silver 4108 has 8 CPU cores with a clock frequency of 1.80 GHz (3.00 GHz).
Apple A15 Bionic (4-GPU) Characteristic Intel Xeon Silver 4108
6 Cores 8
6 Threads 16
hybrid (big.LITTLE) Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
3.23 GHz
2x Avalanche		 A-Core 1.80 GHz (3.00 GHz)
2.02 GHz
4x Blizzard		 B-Core --

Artificial Intelligence and Machine Learning

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. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.
Apple A15 Bionic (4-GPU) Characteristic Intel Xeon Silver 4108
Apple Neural Engine AI hardware --
16 Neural cores @ 15.8 TOPS AI specifications --

Internal Graphics

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.
Apple A15 (4 GPU Cores) GPU no iGPU
1.34 GHz GPU frequency --
-- GPU (Turbo) --
12 GPU Generation --
5 nm Technology
3 Max. displays
16 Compute units --
512 Shader --
No Hardware Raytracing No
No Frame Generation No
6 GB Max. GPU Memory --
-- 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.
Apple A15 (4 GPU Cores) 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 / Encode Codec VP8 No
No Codec AV1 No
Decode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Apple A15 Bionic (4-GPU) supports a maximum of 6 GB of memory in 1 memory channels. The Intel Xeon Silver 4108 can connect up to 768 GB of memory in 6 memory channels.
Apple A15 Bionic (4-GPU) Characteristic Intel Xeon Silver 4108
LPDDR4X-4266 Memory DDR4-2400
6 GB Max. Memory 768 GB
1 (Single Channel) Memory channels 6 (Hexa Channel)
34.1 GB/s Max. Bandwidth 115.2 GB/s
No ECC Yes
16.00 MB L2 Cache --
32.00 MB L3 Cache 11.00 MB
-- PCIe version 3.0
-- PCIe lanes 48
-- PCIe Bandwidth 47.3 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Apple A15 Bionic (4-GPU) has a TDP of 7.25 W, that of the Intel Xeon Silver 4108 is 85 W.
Apple A15 Bionic (4-GPU) Characteristic Intel Xeon Silver 4108
7.25 W TDP (PL1 / PBP) 85 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Apple A15 Bionic (4-GPU) has a 48.00 MB cache, while the Intel Xeon Silver 4108 cache has a total of 11.00 MB.
Apple A15 Bionic (4-GPU) Characteristic Intel Xeon Silver 4108
5 nm Technology 14 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4.1, SSE4.2, AVX2, AVX-512
-- Socket LGA 3647
None Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
iOS Operating systems Windows 10, Linux
Q3/2021 Release date Q3/2017
-- Release price 420 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Apple A15 Bionic (4-GPU) (100%)
Intel Xeon Silver 4108 (47%)
⌀ Multi core performance in 2 CPU benchmarks
Apple A15 Bionic (4-GPU) (94%)
Intel Xeon Silver 4108 (100%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
1745 (100%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 3.00 GHz
841 (48%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
4777 (94%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 2.30 GHz
5077 (100%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
2245 (100%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 3.00 GHz
1002 (45%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
5402 (93%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 2.30 GHz
5788 (100%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
Apple A15 (4 GPU Cores) @ 1.34 GHz
1370 (100%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
@ 0.00 GHz
0 (0%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
806250 (100%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 1.80 GHz
0 (0%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
0 (0%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 2.30 GHz
8762 (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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
0 (0%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 3.00 GHz
130 (100%)

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.
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
0 (0%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 2.30 GHz
1014 (100%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

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).
Apple A15 Bionic (4-GPU) Apple A15 Bionic (4-GPU)
6C 6T @ 3.23 GHz
15.8 (100%)
Intel Xeon Silver 4108 Intel Xeon Silver 4108
8C 16T @ 1.80 GHz
0 (0%)

Devices using this processor
Apple A15 Bionic (4-GPU) Intel Xeon Silver 4108
Apple iPhone 13 mini
Apple iPhone 13
 Unknown

News and articles for the Apple A15 Bionic (4-GPU) and the Intel Xeon Silver 4108

What we know about the new Apple A16 Bionic in Apples iPhone 14
What we know about the new Apple A16 Bionic in Apples iPhone 14
Posted by Stefan on 2022-08-23
Every year Apple releases a new iPhone series and with the release of the series always the latest Apple A processor. This has become even more important in recent years, as it has also formed the basis for Apple's M processor series since 2020. The Apple M processors are based on the same core architecture as the Apple A processors, but have been significantly upgraded in many areas such as memory bandwith, amount of memory or cache.

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