How to increase RAM on Xiaomi Poco X3: the complete guide

Owners of the popular Poco X3 NFC smartphone and its more powerful Poco X3 Pro often face a situation where 6 or 8 gigabytes of internal RAM is no longer enough for comfortable operation. Heavy games, many open browser tabs and background processes of messengers force the system to close applications, which causes irritation and reduces productivity. The question of whether it is possible to physically or programmatically expand this volume becomes especially relevant for those who plan to use the device for several years to come.

It is important to set the boundaries: physically replacing memory chips on the motherboard at home is impossible without professional soldering equipment and deep knowledge of microelectronics. However, modern versions of the MIUI shell and HyperOS offer software mechanisms that allow you to use part of the internal flash memory for the needs of the system. In this article, we will discuss all available optimization methods, from standard functions to advanced settings through the engineering menu.

Before we take any drastic measures, we need to assess the current state of the system and understand where the resource is being spent. Often the problem lies not in the lack of gigabytes, but in the inefficient management of processes of the Android operating system itself. Proper configuration can free up a significant amount of resources without the need to reflash or buy a new gadget.

The mechanism of virtual memory in MIUI and HyperOS

Modern Xiaomi and Poco smartphones are equipped with a feature called “Memory Extension” in marketing materials. Technically, this process is the creation of a paging file similar to that used in desktop operating systems. The system reserves part of the fast storage of UFS 3.1 and uses it as an extension of RAM to store data of folded applications.

When physical memory is full, less active processes move to this reserved partition, which allows you to keep more programs running in the background, but you should consider the difference in speed. RAM operates at frequencies of several thousand megahertz, whereas the read/write speed of flash memory, even the most modern one, is much lower. So when you activate this feature, you get volume, but you sacrifice speed when switching between heavy tasks.

Activation of this feature requires rebooting the device, as changes are made to the system configuration files at the bootloader level. The user is given a choice of volume: you can usually add from 1 to 3 gigabytes, depending on the free space on the internal drive.

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Before you turn on the memory expansion function, make sure you have at least 5-6 GB of space on the internal drive. If the memory is filled to the end, the system will start to work slower due to file fragmentation and lack of cache space.

Instructions: Enabling a regular memory extension

You don't need any third-party programs or a computer connection to activate the built-in expansion mechanism. All the necessary tools are already built into the MIUI 13/14 or HyperOS shell. The process takes only a few minutes, but requires careful choice of parameters so as not to reduce the overall responsiveness of the interface.

You first need to go to the basic settings of the device. Find the About Phone section, which displays information about the processor and the firmware version. This is where, at the top of the screen, there is a line indicating the amount of memory. On some versions of the shell, this item may be called "Memory Extension" and be located in a separate menu Additional.

Once you have selected the desired volume, the system will request confirmation and warn you to restart, at which point the file system partitions are redistributed. If you have chosen the maximum value, make sure that there is indeed free space on the disk, otherwise the process may end in error or the system will automatically select a smaller volume.

⚠️ Note: After enabling this function, the first load time may increase by 30-60 This is normal behavior of a system that checks the integrity of new partitions.

It's worth noting that on global firmware versions, this option may be called Memory Extension. If you don't find this item on the menu, maybe your regional version of the software hasn't received this update yet, or the feature is hidden by the developers for this model, in which case you can try changing the region in the Additional → Region settings to India or Indonesia, where this feature appears more often.

Advanced settings through the developer menu

For users who want more subtle control over resource allocation, there is a hidden developer menu that allows you to manage background process limits and task priorities, which doesn't increase the physical amount of memory, but makes the system more aggressively store active applications in memory without unloading them as quickly.

To get into this menu, you need to go to About Phone and quickly click 7-10 times on the MIUI Version. After the notification "You became a developer" appears in the settings menu, a new section Additional → For developers will appear. Here we are interested in several key parameters that affect the operation of RAM.

Find the background limit. It's the default "Standard limit." Changing this to "No limit" can help keep more applications active, but it also leads to faster battery drain, as the processor will constantly process background tasks. Use this option with caution.

Also worth noting is the Don't keep activities option. It has to be turned off! If it's active, the system destroys the application as soon as you roll it down to the home screen, which creates the illusion of memory deprivation. Make sure that this switch is inactive.

Another important parameter is the scale of the animation. While it doesn't add megabytes, scaling down windows and transitions from 1x to 0.5x creates a sense of faster interface performance. The brain perceives the reduction in response time as an increase in performance, which indirectly helps save CPU resources.

Use of third-party utilities and Superuser rights

There are users who are willing to take risks for the best possible result: Root allows access to system files, allowing you to change virtual memory settings at the kernel level, and uses utilities like SWAP No Root (works without rights) or Kernel Adiutor (requires Root).

Method of construction SWAP-The partition allows you to force the system to use the paging file even if the smartphone manufacturer did not provide such an option in the menu. SD-However, on current versions of Android (11, 12, 13, 14), this method is unstable due to changes in the file system and security policy.

⚠️ Attention: Getting Root-rights (unlocking the bootloader) on Poco X3 NFC/Pro voids the warranty and may result in the blocking of certain Google Pay banking applications and services.

If you do decide to do this, you will need to unlock the bootloader through the official Mi Unlock utility on your computer. TWRP And then you can use the Magisk rights, and then you can use the management apps. SWAP-Remember, creating a large SWAP-file SD-The card can completely "kill" the speed of the phone.

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Root rights give you complete control over memory, but they make the device vulnerable to viruses and block banking applications.

Cleaning and optimizing busy memory

Before expanding memory, it’s worth trying to free up what’s already there. Often users are unaware of how much resources are consuming hidden processes and junk files. Regularly cleaning the cache and removing unused applications can give a performance boost comparable to adding 1-2 GB of virtual memory.

Xiaomi’s built-in Security app has a “Clean Up” feature that deletes temporary files. However, for a deeper cleanup, it is recommended to use the storage menu. Go to Settings → Memory and analyze which apps take up the most space. Social networks like Telegram and WhatsApp can grow to several gigabytes of cache that can be safely deleted.

• 🗑️ Remove Unused Apps: If you haven’t run a game in six months, it only ranks on the process list.
• 📉 Turn off Auto Start: in the Security app → Permits → Auto-start disable all unnecessary programs.
• 🌐 Use Lite versions: replace heavy apps (Facebook, Instagram) with their lightweight counterparts.

Also worth checking is the list of services running. There's a "Run Services" item on the developer menu, where you can see how much memory each process consumes in real time. If you see an application that you didn't run but it eats hundreds of megabytes, force it to stop.

Poco X3 NFC vs Pro: Is there a difference in approach?

While the Poco X3 NFC and Poco X3 Pro look identical, their internal design is significantly different: The NFC version is built on a Snapdragon 732G processor, which has more modest energy efficiency and memory performance compared to the flagship Snapdragon 860 in the Pro version.

On the Pro, LPDDR5 memory is much faster, so artificial expansion through flash is less noticeable and sometimes even harmful. The system already multitasks perfectly. On the NFC version with LPDDR4X memory, adding virtual volume can have a more tangible effect in scenarios where physical memory is fully filled.

Owners of the NFC version should be careful with the number of background applications, since the 7 Series processor heats up faster when working with memory. Overheating leads to trotting, which negates all the benefits of extended memory, and for them, optimization should be the priority, not expansion.

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