RAM Jet in Xiaomi: what is this technology and why it is needed in your smartphone

If you’re following Xiaomi’s smartphone news, you’ve probably come across the term RAM Jet, a new technology that the manufacturer is actively promoting in the flagship and mid-budget models of 2023-2026. At first glance, it may seem like another marketing ploy, but in fact, RAM Jet does affect the performance of the device. In this article, we’ll discuss what lies behind this name, how the technology works at the level of hardware and software, and why its presence can be a decisive factor in choosing a new smartphone.

Many users confuse RAM Jet with conventional memory extension (RAM) due to built-in flash memory, a feature that has long been used in Android devices called Memory Extension or Virtual RAM. However, Xiaomi’s approach is radically different: it’s not just about reserving part of the drive for virtual memory, but about dynamic allocation of resources to take into account active tasks and optimize the processor in real time, which means that the smartphone “understands” which applications should be kept in the RAM and which can be unloaded without losing performance.

But how exactly does that work in practice? And what Xiaomi, Redmi, and POCO models support RAM Jet? Let's get straight to the order, from technical nuances to customization tips.

What is RAM Jet and how is it different from virtual memory?

The term RAM Jet (sometimes spelled RAMJet or RAM-Jet) is Xiaomi’s proprietary technology, introduced in 2023, which aims to optimize the use of RAM (RAM) and internal storage (ROM) to increase multitasking and smartphone speed. Unlike classical virtual memory, where some flash memory is reserved for a swap file, RAM Jet operates at the core level and uses machine learning algorithms.

The main differences:

• 🔄 Dynamic distribution: RAM Jet not only allocates a fixed amount of memory to a virtual RAM, but analyzes user behavior and allocates resources in real time.
• ⚡ Game optimization: The technology is closely integrated with Game Turbo, the proprietary mode for gamers in MIUI, which allows you to keep games in memory even when switching to other tasks.
• 📊 Adaptive cache: Unlike standard virtual memory, which can slow down due to slow flash memory, RAM Jet uses processor-level caching.

Simply put, if normal virtual memory is a crutch that helps your smartphone stay on top of RAM shortages, then RAM Jet is an intelligent resource manager that makes multitasking really effective. For example, if you listen to music on Spotify, chat on Telegram at the same time, and check your email periodically, the technology will ensure smooth switching between apps without rebooting.

What Xiaomi models support RAM Jet

RAM Jet technology debuted in the flagship Xiaomi 13 and Xiaomi 13 Pro smartphones, and was later introduced into more affordable models, and today (2026) it can be found in the following devices:

It is important to note that RAM Jet only works on devices with Qualcomm Snapdragon 8 Gen 2/Gen 3 processors or MediaTek Dimensity 9000/9200. Budget models on Snapdragon 6/7 series chips or older Dimensity do not support the technology due to performance limitations.

To check if you have RAM Jet on your smartphone, go to Settings → About Phone → Full Specification. If the feature is available, you will see RAM Jet Optimization or Dynamic Memory Extension.

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If your smartphone has RAM Jet but it is inactive, try updating MIUI to the latest version.

How RAM Jet works at system level

Technically, RAM Jet consists of three key components:

1. Task prediction algorithm – analyzes which applications you use most often, and loads them in advance into RAM.
2. Dynamic swap – Reserves some of the UFS 3.1/4.0’s fast memory for virtual RAM, but only when it’s really needed (e.g. when running heavy games).
3. Cache optimization – clears unnecessary background processes without affecting critical tasks (such as music playback or navigation).

Example: you run a Genshin Impact game, then switch temporarily to Chrome to check something out. Without RAM Jet, the game would be offloaded from memory, and you'd have to wait for it to be rebooted when you come back. With Xiaomi technology, the game stays in sleep mode in RAM, and you instantly continue from the same place.

Interestingly, in tests, the Xiaomi 14 Pro with RAM Jet showed 15-20% better multitasking compared to the Samsung Galaxy S23 Ultra, which uses classic virtual memory. This is due to the fact that Xiaomi algorithms take into account not only the current load, but also the history of application usage.

How to Enable and Configure RAM Jet

In most supported models, the RAM Jet is activated by default, but it can be manually configured if necessary.

1. Open the Settings.
2. Go to About Phone → Full Specification → Memory.
3. Find RAM Jet Optimization (or Dynamic Memory Expansion in Russian firmware).
4. Activate the switch and select the mode: 🔋 Balance is the optimal mode for most users. ⚡ Performance is the maximum use of virtual memory (can reduce battery life). 🔄 Energy savings - minimum expansion RAM to extend autonomy.

If RAM Jet is not in the settings, it can mean:

• ❌ Your model does not support the technology (see table above).
• ⚠️ You have an outdated version of MIUI (update via Settings → System Update).
• 🌍 You use custom firmware (e.g. LineageOS) where the function is disabled.

RAM Jet and Games: How Technology Affects Gameplay

One of the key benefits of RAM Jet is optimization for mobile gaming. In combination with Game Turbo mode, the technology allows:

• 🎮 Keep the game in memory even when switching to other tasks for a long time (for example, responding to a message in the messenger).
• 📈 Reduce lags by preloading textures and cache game resources.
• 🔥 Extend battery life in game mode by 10-15% through optimization of background processes.

Example: in PUBG Mobile tests on Xiaomi 13T Pro with activated RAM Jet, the average FPS was consistently higher by 5-7 frames compared to the same device but with the function disabled, while the body heat decreased by 2-3 ° C, which is critical for long gaming sessions.

To maximize the benefits of technology in games:

1. Enable Game Turbo in the settings (Settings → Special Features → Game Turbo).
2. Activate Performance Mode in RAM Jet.
3. Add the game to the list of Priority apps (in the same Game Turbo settings).

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RAM Jet is especially useful for open-world games (Genshin Impact, Honkai: Star Rail), where frequent switching between applications usually leads to a level reboot.

RAM Jet vs. Classic Virtual Memory: Which is Better

Many users have asked: How is RAM Jet better than a conventional flash memory expansion of RAM?

The main drawback of classic virtual memory is that it slows down the smartphone, because flash memory (even UFS 3.1) is ten times slower than RAM.

• 🧠 A predictive algorithm that preloads data into RAM.
• ⚡ Use of the LPDDR5 cache for temporary task storage.
• 🔄 Dynamic control - swap is only turned on at peak loads.

However, there is a downside: RAM Jet requires a powerful processor and fast memory (UFS 3.1/4.0 + LPDDR5). On budget smartphones with UFS 2.2 and LPDDR4X, the technology will perform worse or not support all the features.

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If you have a smartphone with UFS 2.1/2.2 (like the Redmi Note 11), even if you have a RAM Jet in the specifications, you don't feel real performance gains.

Frequent RAM Jet Problems and How to Solve Them

Despite all the advantages, users sometimes encounter bugs associated with RAM Jet, and here are the most common problems and solutions:

⚠️ Warning: If after activation of RAM Jet, the smartphone started to slow down or discharge quickly, try resetting the memory settings. Go to Settings → Applications → Application Management → Clear the cache for system processes.

Problem 1: RAM Jet is not included

• 🔹 Check if your model supports the technology (see table above).
• 🔹 Update. MIUI last-minute.
• 🔹 If you use custom firmware, go back to the official firmware.

Problem 2: Increased battery consumption

• 🔹 Switch to Balance Mode instead of Performance.
• 🔹 Disable RAM Jet for unnecessary applications in Settings → Memory → Application Optimization.
• 🔹 Check if your smartphone is warming up — overheating can be a cause of increased power consumption.

Problem 3: Applications are still rebooting

• 🔹 Add problematic applications to Secure Applications (Settings → Battery → Secure Applications).
• 🔹 Clear the cache for the MIUI System Launcher.
• 🔹 Reboot your smartphone — sometimes resetting temporary data helps.

⚠️ Warning: If the Jet smartphone starts spontaneously restarting after activation of RAM, this may indicate a malfunction of the drive, in which case, disable the function and contact the service center.

FAQ: Answers to popular questions about RAM Jet