HiSilicon Kirin 955 vs AMD EPYC 7742

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CPU comparison with benchmarks

-VS-

CPU lineage

HiSilicon Kirin 955 or HiSilicon Kirin 955 – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The HiSilicon Kirin 955 features 8 processor cores and has the capability to manage 8 threads concurrently.
It was released in Q2/2016 and belongs to the 4 generation of the HiSilicon Kirin series.
The AMD EPYC 7742 features 64 processor cores and has the capability to manage 128 threads concurrently.
It was released in Q3/2019 and belongs to the 2 generation of the AMD EPYC series.
To use the AMD EPYC 7742, you'll need a motherboard with a SP3 socket.
HiSilicon Kirin 950 Group AMD EPYC 7002
4 Generation 2
HiSilicon Kirin 955 Name AMD EPYC 7742
Mobile Segment Desktop / Server
HiSilicon Kirin Family AMD EPYC
 
 

CPU Cores and Base Frequency

The HiSilicon Kirin 955 has 8 CPU cores and can calculate 8 threads in parallel.
The clock frequency of the A-Core is 2.5 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
Processors with hybrid (big.LITTLE) architecture strike a balance between performance and power efficiency, making them ideal for mobile devices.
The AMD EPYC 7742 has 64 CPU cores and can calculate 128 threads in parallel.
The clock frequency of the AMD EPYC 7742 is 2.25 GHz
and turbo frequency for one core is 3.4 GHz.
1.8 GHz B-Core Frequency None
None None 3.4 GHz
None None 64x
hybrid (big.LITTLE) Core architecture normal
4x Cortex-A72 Cores A None
8 CPU Cores 64
No Overclocking No
None None 2.25 GHz
No Hyperthreading Yes
2.5 GHz A-Core Frequency None
4x Cortex-A53 Cores B None
8 Threads 128
 
 

Internal Graphics

The HiSilicon Kirin 955 has integrated graphics, called iGPU for short.
Specifically, the HiSilicon Kirin 955 uses the ARM Mali-T880 MP4, which has 64 texture shaders
and 4 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The AMD EPYC 7742 does not have integrated graphics.
0.9 GHz GPU (Turbo) --
16 nm Technology --
11 Direct X --
0 bytes Max. GPU Memory 0 bytes
4 Execution units --
Q2/2016 Release date --
ARM Mali-T880 MP4 GPU name
64 Shaders --
0.9 GHz GPU frequency --
Midgard 4 Generation --
-- Max. displays --
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

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.
Decode / Encode h265 / HEVC (8 bit) --
No VP9 --
Decode / Encode VP8 --
No VC-1 --
Decode / Encode JPEG --
Decode / Encode h264 --
Decode h265 / HEVC (10 bit) --
No AVC --
No AV1 --
 
 

Memory & PCIe

LPDDR3, LPDDR4 Memory type DDR4-3200
-- Bandwidth 204.8 GB/s
No AES-NI Yes
No ECC Yes
pci PCIe pci
0 bytes Max. Memory 0 bytes
2 Memory channels 8
 
 

Thermal Management

TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 225 W watts.
None TDP (PL1 / PBP) 225 W
-- Tjunction max --
 
 

Technical details

The HiSilicon Kirin 955 is manufactured using a 16 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD EPYC 7742 is manufactured using a 7 nm process.
In total, this processor boasts a generous 256.0 MB cache.
None Virtualization AMD-V, SVM
16 nm Technology 7 nm
ARMv8-A64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
-- Part Number --
Chiplet Chip design Chiplet
Q2/2016 Release date Q3/2019
-- Release price 9000 $
0 bytes L2-Cache 0 bytes
Technical data sheet Documents Technical data sheet
0 bytes L3-Cache 256.0 MB
Socket SP3
Android Operating systems Windows 10, Linux
Cortex-A72 / Cortex-A53 Architecture Rome (Zen 2)