Samsung Exynos 7420 vs MediaTek Helio G99

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CPU comparison with benchmarks


Samsung Exynos 7420 CPU1 vs CPU2 MediaTek Helio G99
Samsung Exynos 7420 MediaTek Helio G99

CPU comparison

Samsung Exynos 7420 or MediaTek Helio G99 - 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 Samsung Exynos 7420 has 8 cores with 8 threads and clocks with a maximum frequency of 2.10 GHz. Up to GB of memory is supported in 0 memory channels. The Samsung Exynos 7420 was released in Q2/2015.

The MediaTek Helio G99 has 8 cores with 8 threads and clocks with a maximum frequency of 2.20 GHz. The CPU supports up to 12 GB of memory in 2 memory channels. The MediaTek Helio G99 was released in Q3/2022.
Samsung Exynos (46) Family Mediatek Helio (37)
Samsung Exynos 7420 (1) CPU group MediaTek Helio G99 (1)
1 Generation 1
Cortex-A57 / Cortex-A53 Architecture Cortex-A76 / Cortex-A55
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Samsung Exynos 7420 is a 8 core processor with a clock frequency of 2.10 GHz. The MediaTek Helio G99 has 8 CPU cores with a clock frequency of 2.20 GHz.

Samsung Exynos 7420 Characteristic MediaTek Helio G99
8 Cores 8
8 Threads 8
hybrid (big.LITTLE) Core architecture hybrid (big.LITTLE)
No Hyperthreading No
No Overclocking ? No
2.10 GHz
4x Cortex-A57
A-Core 2.20 GHz
2x Cortex-A76
1.50 GHz
4x Cortex-A53
B-Core 2.00 GHz
6x Cortex-A55

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.

Samsung Exynos 7420 Characteristic MediaTek Helio G99
-- AI hardware Mediatek APU
-- AI specifications MediaTek APU 2 @ 1 TOPS

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.

ARM Mali-T760 MP8 GPU ARM Mali-G57 MP2
0.70 GHz GPU frequency 0.25 GHz
0.77 GHz GPU (Turbo) 1.07 GHz
Midgard 3 GPU Generation Vallhall 1
28nm Technology 7 nm
2 Max. displays 2
8 Compute units 2
128 Shader 32
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 4 GB
11 DirectX Version 12

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.

ARM Mali-T760 MP8 GPU ARM Mali-G57 MP2
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
Decode / Encode Codec VP8 Decode / Encode
No Codec AV1 Decode
No Codec AVC Decode / Encode
No Codec VC-1 Decode / Encode
No Codec JPEG Decode / Encode

Memory & PCIe

The Samsung Exynos 7420 supports a maximum of GB of memory in 0 memory channels. The MediaTek Helio G99 can connect up to 12 GB of memory in 2 memory channels.

Samsung Exynos 7420 Characteristic MediaTek Helio G99
LPDDR4-1600 Memory LPDDR4X-4266
Max. Memory 12 GB
0 Memory channels 2 (Dual Channel)
-- Max. Bandwidth 34.1 GB/s
No ECC No
0.51 MB L2 Cache --
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Samsung Exynos 7420 has a TDP of --, that of the MediaTek Helio G99 is --.

Samsung Exynos 7420 Characteristic MediaTek Helio G99
-- TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Samsung Exynos 7420 has a 0.51 MB cache, while the MediaTek Helio G99 cache has a total of 0.00 MB.

Samsung Exynos 7420 Characteristic MediaTek Helio G99
14 nm Technology 6 nm
Unknown Chip design Chiplet
Armv8-A (64 bit) Instruction set (ISA) Armv8-A (64 bit)
-- ISA extensions --
-- Socket --
None Virtualization None
No AES-NI No
Android Operating systems Android
Q2/2015 Release date Q3/2022
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Samsung Exynos 7420 to help other visitors make their purchasing decisions. The average rating is 4.5 stars (2 ratings). Rate now:
Here you can rate the MediaTek Helio G99 to help other visitors make their purchasing decisions. The average rating is 4.4 stars (49 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Samsung Exynos 7420 (42%)
MediaTek Helio G99 (100%)
⌀ Multi core performance in 3 CPU benchmarks
Samsung Exynos 7420 (45%)
MediaTek Helio G99 (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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
244 (45%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
543 (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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
945 (52%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
1814 (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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
280 (39%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
712 (100%)

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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
850 (45%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
1874 (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.
Samsung Exynos 7420 Samsung Exynos 7420
ARM Mali-T760 MP8 @ 0.77 GHz
210 (77%)
MediaTek Helio G99 MediaTek Helio G99
ARM Mali-G57 MP2 @ 1.07 GHz
274 (100%)

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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
1618 (38%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
4243 (100%)

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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
0 (0%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
369410 (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.
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
112550 (100%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
0 (0%)

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).
Samsung Exynos 7420 Samsung Exynos 7420
8C 8T @ 2.10 GHz
0 (0%)
MediaTek Helio G99 MediaTek Helio G99
8C 8T @ 2.20 GHz
1 (100%)

Devices using this processor

Samsung Exynos 7420 MediaTek Helio G99
Unknown Unknown

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