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How To Check Your Computer’s RAM Size in MB with Ubuntu

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In this article, we will explore various methods to check your computer’s RAM size in MB using the Ubuntu operating system. This information can be useful when you’re troubleshooting, planning an upgrade, or simply curious about your system’s specifications.

Quick Answer

To check your computer’s RAM size in MB with Ubuntu, you can use the free command in the terminal. Simply open a terminal and type free -m to view the memory size in megabytes.

Using the free Command

One of the simplest ways to check your computer’s RAM size in Ubuntu is by using the free command. This command displays the total amount of free and used physical and swap memory in the system, as well as the buffers and caches used by the kernel.

To use this command, follow these steps:

  1. Open a terminal by pressing Ctrl + Alt + T.
  2. Type free -m and press Enter.

The -m option tells the command to display the memory size in megabytes. If you prefer to view the size in gigabytes, you can use free -g instead. For a more human-readable output, use free -h.

Checking System Information

Ubuntu also provides a built-in way to check your system information, including RAM size. Here’s how to do it:

  1. Click on the power/gear icon (System Menu) in the top right corner of the screen.
  2. Choose “About This Computer”.

The total available memory will be displayed in gibibytes (GiB). To convert this value to mebibytes (MiB), simply multiply it by 1024.

For a more detailed view, you can use the lshw command in the terminal:

  1. Type sudo lshw -c memory and press Enter.

This command will show you each individual bank of RAM installed, as well as the total size for the system memory. The size will likely be presented in gibibytes (GiB), which can be multiplied by 1024 to obtain the mebibyte (MiB) value.

Additional Methods

There are several other commands that can be used to check the RAM size in Ubuntu:

  • To determine the physical memory available in MiB, you can use the command: echo $(($(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / (1024 * 1024))).
  • To check virtual memory available in MB, use: echo $(($(getconf _AVPHYS_PAGES) * $(getconf PAGE_SIZE) / (1024 * 1024))).
  • Another option is to utilize the /proc/meminfo file by running: grep MemTotal /proc/meminfo | awk '{print $2 / 1024}'.

For detailed information about the physical memory chips, you can use sudo dmidecode -t 17 or sudo dmidecode -t memory. These commands will provide information about the memory devices installed, including type, speed, manufacturer, form factor, and more.

Conclusion

Checking your computer’s RAM size in Ubuntu is straightforward and can be done in several ways, depending on the level of detail you need. Whether you’re using the free command, checking the system information, or using other commands, you can easily find out how much RAM you have installed on your Ubuntu system.

Remember, the commands mentioned above may require administrative privileges (sudo) to access certain system information. Always be careful when using these commands and only use them if you’re comfortable with the terminal.

For more information on these commands and their options, you can check out the man pages by typing man [command] in the terminal. For example, man free will give you more information about the free command.

How can I check the RAM size in Ubuntu using the `free` command?

To check the RAM size in Ubuntu using the free command, open a terminal and type free -m to display the memory size in megabytes. You can use free -g to view the size in gigabytes or free -h for a more human-readable output.

How can I check the RAM size in Ubuntu using the system information?

To check the RAM size in Ubuntu using the system information, click on the power/gear icon (System Menu) in the top right corner of the screen, then choose "About This Computer". The total available memory will be displayed in gibibytes (GiB), which can be converted to mebibytes (MiB) by multiplying it by 1024.

How can I check the RAM size in Ubuntu using the `lshw` command?

To check the RAM size in Ubuntu using the lshw command, open a terminal and type sudo lshw -c memory. This command will display each individual bank of RAM installed, as well as the total size for system memory. The size will likely be presented in gibibytes (GiB), which can be multiplied by 1024 to obtain the mebibyte (MiB) value.

Are there any other commands to check the RAM size in Ubuntu?

Yes, there are several other commands you can use to check the RAM size in Ubuntu. For example, you can use echo $(($(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / (1024 * 1024))) to determine the physical memory available in mebibytes (MiB). You can also use grep MemTotal /proc/meminfo | awk '{print $2 / 1024}' to check the RAM size using the /proc/meminfo file.

How can I get detailed information about the physical memory chips in Ubuntu?

To get detailed information about the physical memory chips in Ubuntu, you can use the sudo dmidecode -t 17 or sudo dmidecode -t memory command in the terminal. These commands will provide information about the memory devices installed, including type, speed, manufacturer, form factor, and more.

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