Written by

Ojash

Reviewed by

Akshat

Last updated: June 28, 2023

Expert verified

When optimizing performance and troubleshooting issues in Linux systems, understanding the hardware specifications is crucial. Checking CPU information plays a vital role in this process, allowing you to gather valuable insights about your system’s processing power. In this comprehensive guide, I will explore different ways to check CPU info in Linux, ranging from command-line tools to graphical user interfaces (GUI) and third-party applications. I will also explore tips and tricks to check CPU info in Linux. By leveraging these methods, you can better understand your CPU’s capabilities and make informed decisions for system optimization.

How to Check CPU Info in Linux

To check CPU info in Linux, you can utilize various methods. The lscpu command provides quick and detailed CPU information while examining the /proc/cpuinfo file gives access to specific CPU details. The hwinfo tool offers comprehensive CPU specifications, and the System Monitor GUI tool allows real-time monitoring of CPU usage. Additionally, the inxi system information tool provides detailed hardware and software information.

1. lscpu Command

lscpu is a command-line tool that provides a quick and straightforward way to obtain detailed CPU information in Linux. It is particularly useful for identifying CPU architecture, vendor, model name, CPU cores, and cache details. Follow these steps:

1. Open a terminal.

2. Once installed, simply run the following command in the terminal:

<strong>lscpu</strong>

3. The output will display essential CPU information, including architecture, vendor, model name, CPU cores, and cache details. Analyze this information to identify the CPU model, understand the number of cores available, and determine cache sizes.

2. Utilizing cat /proc/cpuinfo

Examining the /proc/cpuinfo file through the cat command provides a wealth of information about your CPU. This method is ideal for extracting specific CPU details like flags, frequency, and model name using additional command-line tools like grep and awk. Here are steps to do it:

1. Open a terminal and enter the following command:

<strong>cat /proc/cpuinfo</strong>

2. The output will provide a wealth of information about your CPU, such as CPU flags, frequency, model name, and more. 

3. Exploring hwinfo

hwinfo is a versatile command-line tool that offers an extensive range of hardware information, including detailed CPU specifications. It is well-suited for obtaining comprehensive CPU-related details such as vendor, model, architecture, cache sizes, and virtualization support. Follow these steps

1. Install hwinfo by running the following command:

<strong>sudo apt install hwinfo</strong>

2. The command will install hwinfo after execution.

3. Launch hwinfo in the terminal by typing:

<strong>hwinfo</strong>

4. Within the hwinfo output, you’ll find detailed CPU information, including vendor, model, architecture, cache sizes, virtualization support, and more.

4. Using System Monitor

The System Monitor graphical user interface (GUI) tool provides real-time monitoring of system resources, including CPU usage. It is perfect for visually observing CPU performance, frequency, temperature, and other relevant details. Here is a step-by-step guide to it:

1. Open the application menu. 

2.  Search for System Monitor and launch the application.

3. In the System Monitor interface, navigate to the Resources tab. 
4. In the Resources tab, you can observe real-time CPU usage, frequency, temperature, and other relevant details. Graphical representations make it easy to visualize CPU performance.

5. inxi System Information Tool

The inxi system information tool is a powerful command-line tool that allows you to view detailed information about your system, including hardware and software details. This tool is particularly useful for system administrators, troubleshooters, and users who need to gather detailed information about their system for diagnostic or optimization purposes. Here is a step-by step guide:

1. Launch your command window.
2. Run the following command to install inxi:

<strong>sudo apt install inxi</strong>

3. Press Enter to continue the installation.

4. After the installation is complete, you can verify that inxi is installed correctly. Run the following command:

<strong>inxi --version</strong>

5. If the installation was successful, you should see the version number of inxi displayed in the output.

6. To display system information using inxi, simply run the following command: