Owners of Xiaomi, Redmi and POCO smartphones often wonder how critical the amount of RAM installed in the device is, and many confuse it with permanent storage, believing that it depends on the number of photos or applications that can be saved. In fact, RAM serves a completely different function, acting as a short-term buffer for running processes.
It is the characteristics and volume of RAM that determine how quickly your phone will respond to touch, how many apps will remain open in the background and how smoothly the MIUI or the new HyperOS interface will work. Understanding the principles of this component will help you to properly configure the gadget and extend its effective life without the need to immediately purchase a new device.
In today’s mobile industry, resource requirements are growing with each version of the operating system. Whereas before 2-3 gigabytes were considered the norm, today even Xiaomi’s budget models start with 4-6 GB. Let’s understand in detail what tasks this component takes on and why its shortage leads to noticeable “lags”.
The main function of RAM in the architecture of the smartphone
The main task of RAM is to store the temporary data needed by the processor for instant access. When you launch an application, it is not read entirely from a slow internal drive, but partially or completely moved to RAM. This ensures a high response rate of the system.
In Xiaomi smartphones, not only is the hardware responsible for allocating these resources, but the software shell is also responsible for it. The system dynamically allocates memory blocks for active tasks. If you switch between the messenger and the browser, the data of these applications stay in memory, allowing you to instantly return to the last state without reloading the page.
⚠️ Warning: The constant lack of free RAM forces the system to aggressively unload background processes, which can lead to the loss of unsaved data in open documents.
Memory speed also plays a role: Top-end models use LPDDR5 or LPDDR5X, which delivers bandwidths that are several times higher than the legacy LPDDR4X, especially when running heavy games or processing high-resolution photos.
Technical reference
The Impact of RAM Volume on Multitasking and Application Performance
The amount of memory available directly determines the number of applications that can run simultaneously, and in Xiaomi’s rich ecosystem, this is critical, and users with 4 GB of storage often find themselves in a situation where a music player or browser is closed when a camera is launched.
With volume increasing to 8, 12 or even 16 GB in the flagship Xiaomi 14 or POCO F6 models, the use case changes: You can keep dozens of tabs open in your browser, navigator, messengers and game, switching between them without delay.
However, it is worth considering that having a large amount of RAM does not always guarantee perfect performance if software optimization is lame. Xiaomi engineers implement various compression and process prioritization algorithms to ensure comfortable use even on devices with 6 GB of memory.
- 📱 4GB RAM: Basic level for calls, social media and one active application. Background processes are offloaded quickly.
- 🚀 6-8 GB RAM: The best choice for most users, allows you to play and work with documents at the same time.
- 💎 12-16 GB RAM: Fate of enthusiasts and gamers, provides instant switching between any heavy tasks without loss of fortune.
It’s important to understand that heavy apps like Telegram or cards consume hundreds of megabytes of memory each, and that when resources are scarce, the system has to restart these apps constantly, increasing latency and consuming battery life.
Memory Extension memory extension technology in MIUI and HyperOS
Xiaomi has introduced Memory Extension, which allows you to use part of the permanent storage (internal memory) as additional RAM. This software solution is aimed at improving multitasking on devices with limited RAM.
The way it works is to create a virtual partition, and it transfers the rarely used data from a fast RAM to a slower, but bulkier drive, and you can activate this feature in the settings menu, but it depends on the type of drive you have.
Settings → About Phone → Press on "Version MIUI/HyperOS" → Extension of MemoryIt's worth noting that virtual memory is much slower than physical memory. If you have a UFS 2.2 drive on your device, the performance gains will be minimal or even subtle. On fast UFS 3.1 and UFS 4.0, the effect is more pronounced.
⚠️ Attention: Activating memory expansion increases the number of write cycles per internal drive, which theoretically can reduce the life of flash memory with very intensive use.
Experts recommend using this feature only if you really feel a lack of memory in everyday tasks. For devices with 8 GB of RAM and above, turning on this option often does not give a noticeable increase in speed, since physical memory works faster.
☑️ Should you include Memory Extension?
Memory Type Comparison: LPDDR4X vs. LPDDR5
Not only the volume, but the type of chips affect the overall performance of Xiaomi’s smartphone.The difference between memory generations is energy efficiency and bandwidth.This is especially important for gaming performance and camera performance.
| Characteristics | LPDDR4X | LPDDR5 | LPDDR5X |
|---|---|---|---|
| Maximum frequency | 4266 Mbps | 6400 Mbit/ | 8533 Mbps |
| Energy consumption | Standard. | Reduced (-20%) | Minimum |
| Applications in Xiaomi | Budget segment | Midsize and flagships | Top flagships |
Using the faster LPDDR5 standard allows the processor to communicate faster, which in games means more stable FPS and faster loading of textures. In everyday use, the difference is less noticeable, but it affects the overall responsiveness of the interface.
When choosing a smartphone, you should pay attention not only to the numbers in gigabytes, but also to the memory generation. The device with 8 GB LPDDR5 will work faster than the device with 8 GB LPDDR4X, especially under load.
💡
Useful tip: To find out the type of memory on your Xiaomi, use the AIDA64 or DevCheck app in the Memory section.
How to Clean and Optimize RAM on Xiaomi
The MIUI and HyperOS-based Android system has built-in memory management mechanisms, but sometimes the user needs manual intervention.RAM cleaning is useful when the phone starts to run slowly or freeze.
The easiest way is to use a built-in cleaning tool, which closes the background processes and frees up resources for the current task, and you can also use the developer menu to fine-tune the limits of the background processes.
To access advanced settings, you need to activate developer mode, which allows you to limit the number of simultaneous processes that can work, which can help on older devices with low memory.
Settings → About Phone → 7 times press on "Version MIUI" → Advanced settings → For developers → Background process limitBut don't fanatically clean up your memory all the time. Android is designed to keep frequently used apps in memory for quick launch. Constant forced cleaning can lead to the opposite effect: more battery consumption to re-run applications.
- 🧹 Notification curtain: Click the "Clear" button (broom) for quick closing of applications.
- ⚙️ Security: Xiaomi’s Security App Offers In-depth Cache Analysis and Cleanup.
- 🔄 Rebooting: Regularly rebooting your smartphone (once a week) is the best way to reset accumulated errors in your smartphone. RAM.
There is a myth that third-party cleaner apps are useful, but in fact they often consume resources themselves and interfere with the system mechanisms of memory management.
Problems of overflow and memory leakage
One common problem is so-called memory leakage, where the app does not release the occupied resources after work is completed. On Xiaomi smartphones, this can manifest itself in a gradual slowdown after several days of use without restarting.
The most common culprits are poorly optimized apps or social networks that actively use background services. HyperOS tries to combat this by limiting the activity of background applications, but sometimes manual intervention is required.
If you notice that the phone starts to "dumb" after a certain time of operation, check the statistics of memory usage in the settings. This will help identify the parasite application that consumes excessive resources.
⚠️ Note: If memory leakage occurs systematically and is accompanied by heating of the housing, this may indicate a software failure or, in rare cases, a hardware fault of the memory controller.
For diagnosis, you can use the USB debugging mode and logger tools, but for the average user it is enough to monitor system and application updates, since developers often release patches that correct such errors.
💡
Regularly restarting your smartphone every 3-5 days is the most effective way to combat software memory leaks and the accumulation of temporary system errors.