When choosing a mid-range smartphone, consumers often face the need for in-depth analysis of technical specifications, where computing power is central. Xiaomi Redmi 9S became one of the bestsellers of its time precisely because of the successful balance between cost and performance provided by the installed inside silicon “brain”. Understanding which chipset is used allows you to predict the behavior of the device in games, when working with navigation and multitasking.
At the heart of this device is a solution from Qualcomm, which has proven to be reliable and energy efficient. The processor in this model not only provides the speed of the interface, but also determines the capabilities of the camera, charging speed and heat release of the case.
Many users confuse the Redmi 9 series models because they can be equipped with different components in different regions, which is why it is important to clearly identify the Redmi 9S, which differs from the global version of the Redmi Note 9 only in minor design details, but retains the same hardware platform.
Architecture and technical characteristics of the chipset
At the heart of the smartphone is the 8-nanometer Qualcomm Snapdragon 720G, which is a figure that indicates the size of the transistors: the smaller the transistors, the higher the energy efficiency and less heat at peak loads. The processor architecture is built on 64-bit cores, which provides support for modern operating systems and applications.
The core configuration is divided into two clusters to optimize power consumption. The first cluster is represented by two powerful Cortex-A76 cores with clock speeds up to 2.3 GHz, which come into operation when you start heavy games or demanding tasks. The second cluster consists of six energy-efficient Cortex-A55 cores with a frequency of 1.8 GHz, taking over background processes and simple operations like reading text.
An important part of the system is the Adreno 618 graphics accelerator, which is responsible for rendering images in games and smooth interface animations. In conjunction with the processor, the modem Snapdragon X15 LTE works, which supports two-sim mode and frequency aggregation for a stable Internet.
- 🚀 Process technology: 8 nm for maximum efficiency.
- ⚙️ Nuclei: 2x Cortex-A76 + 6x Cortex-A55.
- 🎮 Graphics: Adreno 618 with support for modern API.
- 📡 Communication: Built-in modem 4G LTE Cat.15.
⚠️ Note: Despite the similarity of the names, the processor in Redmi 9S It's different from a Helio chip. G80, It is installed in the regular Redmi 9. Snapdragon 720G It has more powerful graphics and is better optimized for gaming.
Performance in Games and Benchmarks
The power rating of the device is impossible without resorting to synthetic tests. In the popular benchmark AnTuTu (versions 8 and 9), the Xiaomi Redmi 9S consistently scores about 330-350 thousand points, which puts the smartphone in a confident middle class, ahead of many budget decisions of the same period.
In game scenarios, the Snapdragon 720G is the best-selling feature. The "G" in the title stands for Gaming, which implies optimization for games. Popular projects like PUBG Mobile or Call of Duty Mobile work in medium to high graphics settings with frame rates of about 40-50 FPS, which provides comfortable gameplay.
But the limitations of the heat sink are also important, because long game sessions can trigger trottling, which automatically reduces the processor's frequencies to prevent overheating, and can lead to short-term micro-freezes, which is a normal defense system response.
The effect of the processor on autonomy
One of the key advantages of the 8-nanometer process technology is low power consumption. Qualcomm Snapdragon 720G is able to efficiently distribute tasks between the cores, turning off powerful units when they are not needed. When paired with a battery capacity of 5020 mAh, this provides up to one and a half to two days of moderate use.
The dynamic power management system analyzes the use case, so if you're reading a book or listening to music, only low-performance Cortex-A55 cores that consume minimal power are turned on, and the powerful Cortex-A76 cores only activate for a fraction of a second when applications are launched.
💡
For maximum autonomy, you can limit background processes in the developer settings, but standard MIUI optimization is usually enough for stable operation.
Also worth noting is the support for Quick Charge 4.0 fast charging technology, which is controlled by a power controller integrated into the processor platform, which allows the device to be charged much faster than standard methods, although a lower-power adapter is often included.
Comparison with competitors and analogues
To understand the place of the Redmi 9S in the market, you need to compare its processor with competitors. The main rival in this segment was the MediaTek Helio G90T, which was installed in the Redmi Note 8 Pro. Helio G90T is more powerful in raw performance, but it is made on a 12-nm process technology, which is more warm and consumes the battery faster.
Another competitor is the Samsung Exynos 9611 used in the Galaxy A51. Qualcomm’s processor beats it in modem efficiency and signal processing quality, and has a more modern graphics subsystem.This makes the Snapdragon 720G a more versatile solution for regions with unstable network coverage.
| Characteristics | Snapdragon 720G | Helio G90T | Exynos 9611 |
|---|---|---|---|
| Technique | 8 nm | 12 nm | 10 nm |
| AnTuTu (scores) | ~340 000 | ~270 000 | ~260 000 |
| Graphics | Adreno 618 | Mali-G76 | Mali-G72 |
| modem | X15 LTE | Integ. LTE | Integ. LTE |
Features of processing photos and videos
The quality of photos directly depends on the capabilities of the ISP (Image Signal Processor), built into the processor. Snapdragon 720G supports cameras with a resolution of up to 192 MP, which is more than the capabilities of the main module Redmi 9S. Noise reduction algorithms and HDR work at the level of this chip.
Video capture is limited by the processor's capabilities: maximum 4K resolution at 30 frames per second. Image stabilization is mostly software-based (EIS), which also uses the processing power of the graphics core. In low light, the processor switches processing to longer computations, which can cause shutter delay.
Why does 4K video warm up your phone?
For mobile video enthusiasts, it is important to know that the processor supports H.264 and H.265 (HEVC) codecs. Using the H.265 format allows you to save high-quality video with a smaller file size, saving space in internal memory.
Network support and navigation
The communication ability of a smartphone depends entirely on the built-in modem. Qualcomm is traditionally strong in this aspect, providing support for two different devices. SIM-card-at-large 4G. This means that when calling on one SIM card, the second will not be unavailable, remaining online.
The navigation module of the processor supports all major global systems: GPS, GLONASS, BeiDou and Galileo. Positioning accuracy is high, cold start of satellites takes a few seconds. For drivers using a smartphone as a navigator, this is a critical parameter.
- 📶 VoLTE and VoWiFi support for high-quality voice communication.
- 🌍 Two-frequency GPS (L1 + L5) positioning.
- 📶 Wi-Fi 5 (802.11ac) dual-banded.
- 🔵 Bluetooth 5.0 with low power consumption.
⚠️ Note: Some firmware may not have active support 5G, modem X15 Theoretically capable of some functions 5G, but in Redmi 9S antenna module is not soldered to work in fifth-generation networks.
Frequently Asked Questions (FAQ)
Can I overclock the processor on the Redmi 9S?
Why does the phone warm up when charging?
Does the processor support NFC?
Should I buy this phone in 2026-2026?
Conclusions
The Snapdragon 720G is one of the most successful mid-range platforms, delivering the Redmi 9S long life and popularity, and offers a great balance between speed, connectivity and power consumption, while remaining relevant even years after its release.
When you choose this smartphone, you get a proven hardware that will not fail in everyday tasks, the main thing is to understand its limitations and not require a mid-range device to perform flagships.
💡
Snapdragon 720G in Redmi 9S is a “middle ground”: it is more powerful than budget counterparts, but cooler and more economical than the game monsters of the past.