How to check the processor Xiaomi Poco X3 Pro: From basic information to stress tests

Why check the processor on Poco X3 Pro and what it does.

Qualcomm Snapdragon 860 processor in Xiaomi Poco X3 Pro is the heart of the device, which is responsible for speed, multitasking and energy efficiency. But even powerful hardware can not work at full capacity due to overheating, incorrect settings or hardware problems:

🔹 Hidden defects – for example, trottling (automatic frequency reduction) due to overheating or malfunction of individual cores.

🔹 Compliance with stated characteristics – unscrupulous sellers sometimes pass other models for Poco X3 Pro, and the processor check will reveal the fraud.

🔹 Performance optimization – if the smartphone starts to “brake”, tests will show whether it is related to the processor or other components (RAM, drive).

In this article, we will discuss 5 ways to verify the basic information through standard settings to deep analysis using specialized utilities, you will learn how to check the real frequency of the Snapdragon 860 cores in real time, compare the results with reference values and what to do if the data does not match the expected values.

Method 1: Checking the processor model through phone settings

The easiest method is to look at the information about the processor in the standard settings. MIUI. It doesn’t give details, but it makes sure that the phone has the Snapdragon 860, not another chipset.

Instructions:

1. Open the Settings. → The phone.
2. Tap a few times on the MIUI version until the Additional options menu appears.
3. Select All Features (or Full Specs in English firmware).
4. Find the processor line – it should be specified Qualcomm Snapdragon 860 (codename kona).

⚠️ Note: If the specifications indicate another chipset (e.g., Snapdragon) 732G), It means you weren't sold Poco. X3 Pro and another model (possibly Poco) X3 NFC). In this case, we recommend returning the device to the seller or contact the Xiaomi service center for authentication.

This method doesn't show the current core frequency or temperature, but it does confirm that the processor matches the phone's model.

Processor model (must be Snapdragon 860)

Version MIUI (Current firmware affects productivity)

Volume of RAM (in Poco) X3 Pro — 6/8 GB)

Type of storage (UFS 2.1 or UFS 2.2)

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Method 2: Use of the application CPU-Z detailed

CPU-Z — This is a free utility that shows real technical data of the processor, including:

• 📊 Architecture and core (in Snapdragon) 860 — 1×2.96 GHz + 3×2.42 GHz + 4×1.8 GHz).
• 🔥 Real-time temperature.
• 📈 Current frequency of each nucleus.
• 🛠️ Information about cache and process (7 nm).

How to use:

1. Download CPU-Z from Google Play.
2. Open the SoC tab (System on Chip) – there will be a model of the processor and its specifications.
3. Go to the tab. CPU, to see the current load of kernels and their frequency.
4. In the Thermal tab, check the temperature (normal for Snapdragon 860 – up to 45-50).°C in plain and up to 70-80°C under load).

🔍 What to pay attention to:

• If the core frequency is lower than the stated (for example, 1.8 GHz instead of 2.96 GHz), this may indicate trottling due to overheating or firmware limitations.
• If the temperature is above 85°C without load, this is a sign of problems with the heatpast or cooling system.

Method 3: Processor stress tests (AIDA64 and 3DMark)

If you want to test the stability of the processor under load, use stress tests that mimic extreme working conditions and help you identify:

• 🔥 Overheating and trottling.
• 🛑 Instability (departures, reboots).
• ⚡ Declining productivity over time.

Testing applications:

1. AIDA64 — It shows you graphs of frequency, temperature and energy consumption. Run the System Stability Test. CPU, FPU, Memory.Tap Start and watch the charts for 10-15 minutes.

3DMark

• Choose the Wild Life Stress Test.
• Wait until the end (about 20 minutes).
• Compare the result with the reference values for the Snapdragon 860 (about 2500-3,000 points).

⚠️ Attention: Stress tests put a lot of stress on the battery and the processor:

• Charge the phone to 100%.
• Close all background applications.
• Do not interrupt the test – it can cause failures.

💡

If the phone suddenly turns off during the test, it may indicate a malfunction of the battery or motherboard.

Method 4: Verifying the loading of cores through DevCheck

DevCheck - The Alternative CPU-Z with a more convenient interface and additional functions, such as:

• 📊 Charts of loading cores in real time.
• 🔋 Information about the battery (state, capacity, temperature).
• 📱 Sensor data (accelerometer, gyroscope, compass).

How to check the processor:

1. Install DevCheck.
2. Open the Hardware tab → CPU.
3. Look at the chart. CPU Usage – This shows which cores are currently loaded.
4. Run any game or application (such as Genshin Impact) and watch how the download changes.

🔍 What should be on guard:

• If a large core (2.96 GHz) doesn’t boot at all, it’s possible that the firmware limits its operation to save energy.
• If the download jumps randomly (0-100% for no reason) it can be a sign of a virus or a system failure.

💡

The Snapdragon 860 uses the big.LITTLE architecture: the big cores (Kryo 485 Gold) are responsible for heavy tasks, and the small cores (Kryo 485 Silver) are responsible for background processes. If the small cores are loaded 100% and the large ones are idle, this indicates that the firmware is not optimized correctly.

Method 5: Diagnostics through an engineering menu (for power users)

The engineering menu (#4636##) provides hidden data about CPU performance that does not show standard applications, but this method requires caution - wrong actions can lead to failures.

How to open and what to check:

1. Enter the dialer code: ##4636##.
2. Select Phone Information (or Phone Information).
3. Scroll down to the block. CPU Usage – there you can see the loading of cores in real time.
4. Pay attention to the line. CPU Temp - Processor Temperature.

⚠️ Warning: Do not change the settings in the engineering menu unless you are sure of their purpose! For example, forced shutdown of cores or changing frequencies can lead to a change in the frequency of the device:

• 🔄 Cyclical phone reboot.
• 🔥 Overheating and chipset failure.
• 📵 Loss of communication (if you disable modem modules).

💡 Tip: If you need advanced data but are afraid to use the engineering menu, install the app MTK Engineering Mode (yes, it works on Snapdragon devices too) provides similar information, but in a more secure format.

Comparison with other smartphones: is your Poco working normally X3 Pro?

To see how well the processor works in your Poco X3 Pro, compare it to other popular models on the Snapdragon 860 and similar chipsets:

📌 Conclusions:

• 🔹 Snapdragon 860 in Poco X3 Pro loses to flagships of 2021-2022, but bypasses most mid-budget chipsets (for example, Snapdragon) 732G).
• 🔹 If your results are 20–30% lower than the reference, it may indicate a trottling or malfunction.
• 🔹 For games (Call of Duty Mobile, PUBG) Snapdragon 860 delivers stable 60 FPS mid-set.

What to do if the processor is not working properly?

If tests show problems (overheating, low frequency, trottling), try the following steps:

1. Clean your phone of garbage: Remove unnecessary apps. Clear the cache through Settings → Warehouse → Clear the cache. Use it. SD Maid to remove residual files.
2. Update the firmware: Go to Settings → The phone. → System Update: If there are no updates, check for custom firmware (e.g. Pixel Experience) on the forum XDA Developers.
3. Check the heat paste: If the phone overheats, the heat paste may have dried up (relevant for devices older than 1.5-2 years), you can replace it yourself or at a service center (cost about 1000-1500 years). ₽).

Reset the settings:

• If nothing helps, reset through Settings. → Additionally. → Recovery and discharge.
• Before resetting, save the data!

⚠️ Note: If after all the manipulations, the processor continues to work unstable (for example, the frequency of the large core does not rise above 1.8 GHz), this may indicate a hardware malfunction:

• Contact the Xiaomi service center (the warranty covers defects of the processor, if the phone is not dropped and not disassembled).
• If there is no warranty, check the cost of repairs – sometimes it’s cheaper to buy a new phone than to change the chipset.

FAQ: Frequent questions about the Poco processor X3 Pro