When choosing a smartphone, even if it is a popular model of the past, such as the Xiaomi Redmi Note 4, the first thing potential buyers and enthusiasts pay attention to the core of the device. The question of which chipset controls the operation of the gadget is critical, because it depends on the speed of response, the quality of photo processing and, of course, the ability in modern mobile games.
Many users are still confused about the modifications, as the manufacturer has released two completely different versions of the device for different markets. The global version and the Chinese version received fundamentally different hardware platforms, which radically changes the user experience. Understanding this difference will help you not to overpay for a less productive model or, conversely, choose a more energy-efficient option.
In this article, we will take a closer look at the characteristics of both processors, compare them in synthetic tests, and determine which platform is better suited for your specific tasks, and we will also touch on the issues of heating, autonomy, and overclocking, to give you a comprehensive picture.
Two versions of the smartphone: global and Chinese
The main feature of the Redmi Note 4 lineup is that two technically different devices are tied together under the same name. This is not just a marketing ploy, but a strategic decision by Xiaomi to adapt the product to different price segments and the availability of components at that time. The global version, which was massively supplied to Europe, Russia and CIS countries, received the X index and is based on the platform from Qualcomm.
At the same time, in the domestic market of China and in some Asian regions, the Pro version was sold (or simply without an index depending on the region), equipped with a chipset from MediaTek. These devices are almost identical on the outside, have the same body design, screen and set of cameras, but under the hood they work differently, which is why it is so important to check the model in the settings when buying a used device or ordering from abroad.
⚠️ Attention: When buying a smartphone from hand, be sure to go to the Settings menu → About the phone and check the line "Processor." If it says 8 cores, but does not specify a specific brand, use third-party utilities for accurate identification, as visually distinguishing versions is difficult.
The difference in processors results in different carrier frequency support, slightly different power consumption, and most importantly, different potential in gaming and working with heavy applications. The global version with the Snapdragon chip has historically received warmer support from the firmware community.
Technical characteristics of Qualcomm Snapdragon 625
The Snapdragon 625 (model MSM8953), which is now a global smartphone, has become a hit of its time: a 64-bit chipset made with TSMC's 14-nanometer process technology. It is the delicate process technology that has made it possible to achieve outstanding energy efficiency, making it one of the leaders in battery life.
The architecture of the processor includes 8 computing cores ARM Cortex-A53, It is important to note that all 8 cores are energy efficient, there is no separation into powerful and weak clusters, as in more modern solutions. API, such as OpenGL ES 3.1 and OpenCL 2.0.
The key advantage of this platform is the stability of work under load. Thanks to the 14-nm process technology, the chip is almost not prone to trotting (resetting frequencies due to overheating), which provides a smooth FPS in games for long sessions. The built-in X9 LTE modem provides support for 4th generation networks and frequency aggregation, which positively affects the speed of mobile Internet.
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The Snapdragon 625 is considered one of the most successful mid-range processors ever, thanks to the perfect balance between performance and low power consumption.
Features of the MediaTek Helio X20 platform
The Chinese version of the smartphone is equipped with a processor Helio X20 (model MT6797) from Taiwanese company MediaTek. This chipset was positioned as a solution of the upper middle segment and formally had higher peak performance due to the unique architecture.
The Helio X20’s core technology was Tri-Cluster, which included three core clusters: two powerful Cortex-A72 cores with frequencies up to 2.3 GHz, four mid-performance Cortex-A53 (1.85 GHz) and four energy-efficient Cortex-A53 (1.4 GHz), which, in theory, was supposed to provide better performance in heavy tasks and high efficiency in simple.
However, in practice, the implementation of this scheme in the Redmi Note 4 faced a number of problems. 20-nanometer process manufacturing TSMC used for this chip was less efficient than the 14-nm competitor, which led to higher power consumption and noticeable heating of the case during heavy use, which often provoked a reset of the screen brightness and CPU frequencies.
- 🚀 High peak power: The presence of cores Cortex-A72 gives an advantage in single-threaded tasks and heavy computing.
- 🔋 Three Clusters: Flexible Load Distribution between Cores of Different Powers to Optimize Energy.
- 🌡️ Heating problems: 20-nm process technology leads to faster heating of the case compared to the global version.
Comparison of performance in tests and games
When you compare the two platforms directly, it becomes clear that the choice of processor directly affects how a smartphone behaves in different use cases. While in everyday tasks such as social networks, messengers and watching videos, the difference may not be so noticeable, in resource-intensive applications it manifests itself clearly.
In synthetic tests like AnTuTu or Geekbench, the Helio X20 version often scores higher thanks to the more powerful Cortex-A72 cores.However, in real-world game scenarios, the situation can change.The Snapdragon 625 with Adreno 506 graphics often shows a more stable FPS, while the Helio X20 can suffer from frame drawdowns after a few minutes of play due to trotting.
For today's heavyweight games like PUBG Mobile or Genshin Impact, both processors are already considered obsolete.However, the Snapdragon 625 often has better optimization from game developers, as Qualcomm's platform is more common and popular among gamers.The Adreno graphics engine is traditionally better supported by game studios.
⚠️ Note: Do not expect high productivity in modern 3D-Both of these processors are in the budget and mid-range segments of the past, and for comfortable high-setting games, more powerful solutions are required.
If you plan to use your smartphone primarily for navigation, calls, YouTube, and light games like Candy Crush or Clash of Clans, both versions will do just fine, and the difference will only become noticeable when you multitask with a dozen open apps or try to run a demanding project.
Why does the Snapdragon 625 heat up less?
Energy efficiency and impact on autonomy
One of the most important parameters for any smartphone is the lifetime of a single charge, where the undisputed leader is the global version based on the Snapdragon 625. The combination of a capacious 4100 mAh battery and an extremely economical processor made it easy to withstand two days of moderate use.
The Helio X20 processor, despite having an energy-efficient core cluster, actually performed worse, and the high power consumption of the cores themselves, especially when switching between clusters, and the less efficient process led to faster discharge. Users of the Chinese version often noted that charging was already necessary by evening.
Software optimization is also important, with MIUI’s shell historically better optimized for Qualcomm chipsets, which means that the background processes, communication modules, and power management on the Snapdragon version are fine-tuned, which also contributes to overall system energy efficiency.
☑️ Checking battery status
Summary table of processor characteristics
To make it easier to compare the main technical parameters of both platforms, we have prepared a summary table that will help you quickly assess the differences in the architecture and potential of each of the chipsets installed on the Xiaomi Redmi Note 4.
| Characteristics | Snapdragon 625 (Global) | MediaTek Helio X20 (China) |
|---|---|---|
| Technique | 14 nm (TSMC) | 20 nm (TSMC) |
| Number of kernels | 8 Cortex-A53 cores | 10 cores (2x A72 + 4x A53 + 4x A53) |
| Maximum frequency | up to 2.0 GHz | up to 2.3 GHz |
| Graphic accelerator | Adreno 506 | Mali-T880 MP4 |
| Memory support | LPDDR3 to 1866 MHz | LPDDR3 / LPDDR4 |
As you can see from the table, the Helio X20 wins in core count and maximum frequency, and also supports faster memory. However, the Snapdragon 625 makes up for this with more modern and slim process technology, as well as more optimized Adreno graphics, which often delivers better results in real applications, despite smaller numbers in the specs.
Support for updates and custom firmware
An important aspect of the longevity of the smartphone is the ability to install current versions of Android. Official support for both versions of the Redmi Note 4 has long been discontinued, but the development community continues to support these devices, and here again the difference between the platforms pops up.
The Snapdragon 625 version has a huge base of custom firmware (Custom ROM), thanks to the openness of Qualcomm documentation and the popularity of the chip, stable versions of Android 10, 11 and even newer versions from such builds as LineageOS, Pixel Experience and Xiaomi.eu are available for it.
The MediaTek Helio X20 version is more complicated. MediaTek's closed source code makes it difficult for developers to work. Although there are fewer firmware, they may contain more bugs, and the installation process is often more complex and risky. If you plan to experiment with software, the choice is obvious.
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Before installing custom firmware, always make a full data backup and make sure that the firmware version (Global or China) strictly matches the hardware platform of your smartphone, otherwise the device can turn into a “brick”.
The final choice: which version to prefer
To sum up, it’s safe to say that for most users, the best choice is the global version based on the Snapdragon 625.It offers the best balance between performance, heating and battery life.The stability of operation and broad community support make this option more preferable in 2026 and later.
The Helio X20 version may only appeal to collectors or those who buy the device at a very low price and are willing to put up with more frequent charging and heating for slightly higher peak performance in individual tasks.
Remember, when you buy a used device, battery and screen health are often more important than a small difference in processors, but if you have to choose between two identical devices, take the one on Qualcomm.