AMD GX-420CA vs HiSilicon Kirin 620

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CPU comparison with benchmarks


AMD GX-420CA CPU1 vs CPU2 HiSilicon Kirin 620
AMD GX-420CA HiSilicon Kirin 620

CPU comparison

AMD GX-420CA or HiSilicon Kirin 620 - 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 GX-420CA has 4 cores with 4 threads and clocks with a maximum frequency of 2.00 GHz. Up to 16 GB of memory is supported in 1 memory channels. The AMD GX-420CA was released in Q2/2013.

The HiSilicon Kirin 620 has 4 cores with 4 threads and clocks with a maximum frequency of 1.20 GHz. The CPU supports up to GB of memory in 1 memory channels. The HiSilicon Kirin 620 was released in Q1/2015.
AMD G (38) Family HiSilicon Kirin (29)
AMD G-Series 1st Gen (9) CPU group HiSilicon Kirin 620 (1)
1 Generation 3
Temash (Jaguar) Architecture Cortex-A53
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD GX-420CA has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD GX-420CA is 2.00 GHz while the HiSilicon Kirin 620 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the HiSilicon Kirin 620 is at 1.20 GHz.

AMD GX-420CA Characteristic HiSilicon Kirin 620
4 Cores 4
4 Threads 4
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? No
2.00 GHz Frequency 1.20 GHz
-- Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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.

AMD GX-420CA Characteristic HiSilicon Kirin 620
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD GX-420CA or HiSilicon Kirin 620 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.

AMD Radeon HD 8400 GPU ARM Mali-450 MP4
0.60 GHz GPU frequency 0.53 GHz
-- GPU (Turbo) 0.53 GHz
5 GPU Generation Utgard
28 nm Technology 28nm
2 Max. displays 1
2 Compute units 4
128 Shader 64
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory --
11.1 DirectX Version 0

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.

AMD Radeon HD 8400 GPU ARM Mali-450 MP4
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The AMD GX-420CA can use up to 16 GB of memory in 1 memory channels. The maximum memory bandwidth is 12.8 GB/s. The HiSilicon Kirin 620 supports up to GB of memory in 1 memory channels and achieves a memory bandwidth of up to --.

AMD GX-420CA Characteristic HiSilicon Kirin 620
DDR3-1600 Memory LPDDR3
16 GB Max. Memory
1 (Single Channel) Memory channels 1 (Single Channel)
12.8 GB/s Max. Bandwidth --
Yes ECC No
2.00 MB L2 Cache --
-- L3 Cache --
2.0 PCIe version --
8 PCIe lanes --
4.0 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD GX-420CA is 25 W, while the HiSilicon Kirin 620 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD GX-420CA Characteristic HiSilicon Kirin 620
25 W TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
90 °C Tjunction max. --

Technical details

The AMD GX-420CA is manufactured in 28 nm and has 2.00 MB cache. The HiSilicon Kirin 620 is manufactured in 28 nm and has a 0.00 MB cache.

AMD GX-420CA Characteristic HiSilicon Kirin 620
28 nm Technology 28 nm
Monolithic Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 ISA extensions --
FT3 Socket --
AMD-V Virtualization None
Yes AES-NI No
Windows 10, Linux Operating systems Android
Q2/2013 Release date Q1/2015
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD GX-420CA to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the HiSilicon Kirin 620 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
AMD GX-420CA (100%)
HiSilicon Kirin 620 (40%)
⌀ Multi core performance in 1 CPU benchmarks
AMD GX-420CA (100%)
HiSilicon Kirin 620 (58%)

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 GX-420CA AMD GX-420CA
4C 4T @ 2.00 GHz
258 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
102 (40%)

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 GX-420CA AMD GX-420CA
4C 4T @ 2.00 GHz
876 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
505 (58%)

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 GX-420CA AMD GX-420CA
AMD Radeon HD 8400 @ 0.60 GHz
154 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
ARM Mali-450 MP4 @ 0.53 GHz
32 (21%)

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 GX-420CA AMD GX-420CA
4C 4T @ 2.00 GHz
230 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
0 (0%)

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 GX-420CA AMD GX-420CA
4C 4T @ 2.00 GHz
682 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 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.
AMD GX-420CA AMD GX-420CA
4C 4T @ 2.00 GHz
1796 (100%)
HiSilicon Kirin 620 HiSilicon Kirin 620
4C 4T @ 1.20 GHz
0 (0%)

Devices using this processor

AMD GX-420CA HiSilicon Kirin 620
Unknown Unknown

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