Xiaomi gaming smartphone owners often encounter a mysterious option in the developer’s menu called 4x MSAA, which hides a powerful anti-aliasing tool that can dramatically change the visual component of games, and many users try to activate it in the hope of getting a picture of the level of consoles, but do not always understand the principle of the technology.
Activating this feature forces the GPU to process each pixel of the image four times, which eliminates the "ladders" on the edges of objects. However, beautiful graphics always have to pay for the resources of the system. In this article, we will discuss in detail how anti-aliasing works on Snapdragon and MediaTek chips, and whether the game is worth a candle on your device.
It should be noted that standard Android tools often do not have this option for regular applications. To enable it, you need access to the hidden Settings menu → About the phone → Stamp on the MIUI version. This action unlocks access to engineering options, where the desired switch disappears.
The Technical Essence of MSAA Technology
MSAA stands for Multisample Anti-Aliasing, which literally translates to multisemble smoothing, and the algorithm's primary goal is to eliminate the step artifacts that occur when rendering polygonal graphics on a raster screen, and without smoothing out the edges of objects, they look ragged, especially when the camera moves.
The principle of operation is to sample several samples of color and depth for one pixel. 4x mode means that four samples are taken to calculate the final color of one point, which allows you to get smoother transitions between the object and the background, making the picture cinematic and pleasing to the eye.
It’s important to understand that Xiaomi doesn’t create this technology, but only provides access to GPU drivers. Implementation depends on the chipset. On older processors, the load can be critical, whereas modern flagships handle buffer processing with virtually no apparent delays if the game is optimized.
⚠️ Attention: Compulsory inclusion 4x MSAA In system settings, it can conflict with the graphics settings within games. FPS or incorrectly displaying textures.
There is a misconception that this feature works everywhere. In fact, it only activates in applications that use OpenGL ES 2.0 and higher. Modern engines like Unreal Engine or Unity often have their own anti-aliasing algorithms that can ignore or work on top of the system request, doubling the load.
Impact on productivity and autonomy
The main question that worries gamers is: how much will the 4x MSAA hit performance? The answer depends on the screen resolution and power of the GPU. On displays with high pixel density (FullHD+ and higher), the load difference may be less noticeable, since the anti-aliasing artifacts themselves are less visible.
However, when you activate the option, the load on the graphics core increases multiple times. This leads to two main consequences: first, the device starts to consume more power, which reduces battery life; second, the heat generation increases, which can provoke trottling (reduced frequency of the processor for cooling).
Tests on Redmi Note and Poco series devices show that in heavy projects like Genshin Impact or PUBG, the FPS drop can be anywhere from 10 to 20 frames per second. In lighter games (Clash Royale, Among Us), the effect on smoothness may be minimal, but the heating of the case will remain a noticeable factor.
The following is a table showing the approximate impact on resources depending on the use case:
| Script | GPU loading | Battery consumption | Heating. |
|---|---|---|---|
| Desktop | Minimum | No change. | Absent. |
| 2D games | Low. | +5% | Weak. |
| 3D shooter | High-pitched | +15-20% | Strong. |
| Emulators | critical | +25% | Very strong. |
If you plan long gaming sessions without connecting to the charger, it is better to leave this feature off, in which case the priority is the stability of frame rates, not the perfect smoothness of the edges of objects.
How to turn on 4x MSAA on Xiaomi
To activate the feature, you need to access the developer menu. The process is the same for most MIUI and HyperOS shells. First, make sure you're in the main settings menu of the smartphone.
Find the About Phone section and quickly click 7-10 times on the MIUI version (or OS version). Once the pop-up notification "You've become a developer" appears, you can move to the next step.
☑️ Pre-insertion check
Then go back to the main settings menu and go to Additional → For Developers. In the list of options, find 4x MSAA (sometimes called "Enable 4x MSAA"). Move the slider to the active position.
⚠️ Warning: Do not include other experimental features in the developer menu unless you know exactly what they are responsible for.
Once turned on, you may need to restart the device to apply changes to all applications, and you can check the work by running the game and paying attention to the image quality and behavior of the FPS counter.
Comparison with other methods of smoothing
In the mobile graphics world, there are various methods of fighting "lags", besides MSAA, there are often FXAA (Fast Approximate Anti-Aliasing) and TAA (Temporal Anti-Aliasing), each of which has its own characteristics of implementation on mobile platforms.
MSAA is considered the best-quality method for geometry, but it's resource-intensive. FXAA works faster by blurring the edges of objects in software, which can give a soapy image effect. TAA uses data from previous frames, which is great for dynamic scenes, but can cause plumes.