Samsung Exynos 7 Octa 7420 vs MediaTek Helio X25 (MT6797T)

Comparisons   11-03-2021
   So, which chip or processor is better? Detailed compare data of benchmarks Samsung Exynos 7 Octa 7420 vs MediaTek Helio X25 (MT6797T), speed testing of GPUs Mali-T880 MP4 and Mali-T760 MP8.
   This performance comparison involves two processors: Exynos 7 Octa 7420 is octa-core (ARM Cortex-A57) and Helio X25 (MT6797T) is deca-core (ARM Cortex-A72). Both processors went throughpower consumption test and battery life test. A thorough review of all the technical characteristics, so that it can be easier to read, is presented in the form of the table.
   From the comparison video, you can get the results of parallel benchmarking in special testing software like 3DMark, Octane V2, Mozilla Kraken, Neocore, Geekbench, Vellamo, AnTuTu, PCMark, PassMark, GFXBench, Quadrant, WebXPRT 3, even the gaming performance of chipsets in Garena Free Fire - The Cobra, Call of Duty: Mobile, Fortnite, Minecraft Bedrock, PUBG, Real Racing 3, Mortal Kombat, Sniper 3D etc.
   After looking at the data of joint benchmarks and videos, you can already make an informed decision about which CPU is better to buy Exynos 7 Octa 7420 or Helio X25 (MT6797T) and which chip is better for gaming: CSR Racing 2, Asphalt 9, Need for Speed No Limits, Madout2.

Summary benchmark results

As a percentage of the maximum value based on a sample from the entire base of all processors
CPU Benchmark
Based on Antutu and Geekbench score

Exynos 7 Octa 7420

Helio X25 (MT6797T)

Battery life test
Power Consumption efficiency (how quickly the processor reduces the battery charge)

Exynos 7 Octa 7420

52%

Helio X25 (MT6797T)

41%

Gaming performance
Which CPU is better for gaming

Exynos 7 Octa 7420

Helio X25 (MT6797T)

Antutu v10, 9

Antutu benchmark separately tests the performance of the CPU, GPU, and memory speed

	Exynos 7 Octa 7420	Helio X25 (MT6797T)
Total score	79294	93545
CPU	22205	26196
GPU	30121	35553
MEM	12689	14960
UX	14262	16833

GeekBench 6, 5.2

This benchmark shows Multi-threaded and Single-threaded processor performance

	Exynos 7 Octa 7420	Helio X25 (MT6797T)
Single-Core	205	242
Multi-Core	923	1089

Comparison of specifications

CPU and Memory

	Exynos 7 Octa 7420	Helio X25 (MT6797T)
Frequency	2100 MHz	2500 MHz
Cores	8	10
Bit	64	64
Lithography	14 nm	20 nm
Transistors count
Core configuration	4x2.1 GHz ARM Cortex-A57 4x1.5 GHz ARM Cortex-A53	2x2.5 GHz ARM Cortex-A72 4x2.0 GHz ARM Cortex-A53 4x1.55 GHz ARM Cortex-A53
Power consumption (TDP)	7 W	5 W
Memory type	LPDDR4	LPDDR3 (Dual Channel)
Max. Memory	4 Gb	4 Gb
Memory Frequency	1866	800
Memory bandwidth	24.8	14
Neural Processor (NPU)	No	No
L1 cache		32 KB
L2 cache	512 KB	1 MB
L3 cache		1 MB
Instruction set architecture (ISA)	ARMv8-A	ARMv8-A

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Helio X25 (MT6797T) is 16% better than Exynos 7 Octa 7420 in terms of CPU frequency. Another difference is that Exynos 7 Octa 7420 has 2 more core than Helio X25 (MT6797T). Also keep in mind that high CPU frequency affects battery life through power consumption.

GPU and Media

GPU	Mali-T760 MP8	Mali-T880 MP4
GPU Frequency	772 MHz	850 MHz
GFloPS	210	115.51
# of Cores	8	4
# of Shader Units
Display	3840 x 2400 pixels	2560 x 1600 pixels

The frequency of the GPU does not always directly indicate its performance. To fully evaluate all the capabilities of a graphics chip, you should take into account the number of Shader Units and Cores, as well as how many GFlops it has.

Gaming benchmark

Fortnite Mobile
PlayerUnknown's Battlegrounds (PUBG Mobile)	14.6	19.8
Garena Free Fire - The Cobra	27.3	34.9
Call of Duty: Mobile	15.1	21.1
Grand Theft Auto V (GTA 5 Mobile)	11.9	16.4
Minecraft: Pocket Edition	14.3	20.3
Real Racing 3	47.8	61.1
Sniper 3D	35.5	66.3
Need for Speed No Limits	32.8	55.8
Mortal Kombat X	35.5	55.8
CSR Racing 2	30	41.9

The numbers in this table indicate the maximum FPS that was received on the device with the corresponding processor. Depending on the configuration of the gadget and graphics quality settings (Ultra, Medium, Normal), the results may differ quite significantly. We recommend that you better study the results of the Antutu v10, 9 and GeekBench 6, 5.2 becnmarks.

Cameras

Camera resolution	20 MP	32 MP
Image Signal Processor (ISP)
Video Encoding FPS	30	30
Video Encoding resolution	4K (Ultra HD), 2K, FullHD	4K, 2K, FullHD
Codec support	H.264, H.265/HEVC, VP9	H.264, H.265

Networks and Navigation

Modem
Download speed	42 MBit/s.	300 MBit/s.
Upload speed	11 MBit/s.	50 MBit/s.
Navigation		GPS, Galileo, Glonass, Beidou
NFC support	No	No
5G support	Yes	No

Result:
The number of parameters for which Samsung Exynos 7 Octa 7420 is better: 10
The number of parameters for which MediaTek Helio X25 (MT6797T) is better: 26
Please note that you do not need to sightlessly trust the automatic comparison of the table. You can watch benchmark video from beginning to end of parallel testing and hear what people think who really appreciated the capabilities of both CPUs Exynos 7 Octa 7420 and Helio X25 (MT6797T), as well as read the test results at the links below.

Exynos 7 Octa 7420 SoC - all data

• Devices lists
• Benchmarks
• PUBG mobile
• Fortnite Mobile
• GeekBench 6, 5 mobile
• Antutu v10
• 3DMark

• Exynos 7 Octa 7420 specs and review.

Helio X25 (MT6797T) SoC - all data

• Devices lists
• Benchmarks
• PUBG mobile
• Fortnite Mobile
• GeekBench 6, 5 mobile
• Antutu v10
• 3DMark

• Helio X25 (MT6797T) specs and review.