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On Windows 10, when your computer starts getting slow due to memory demanding applications (such as Google Chrome, Photoshop, or Premiere Pro), understanding the number of RAM (Random Access Memory) slots available on the motherboard can help to determine whether you can simply add more memory sticks, or if you need to purchase a new memory kit with higher capacity to upgrade your system.

Although you can always open the computer case or check your documentation (or move things into a slick glass-panelled case), you can also confirm the total number of slots supported on your motherboard and how many of them are being used using Task Manager.

In this Windows 10 guide, we'll walk you through the steps to quickly find out if your computer has any available memory slots that you can use to add more RAM to your system.

How to check RAM slots available on Windows 10

To confirm the number of memory slots available on your computer or laptop, use these steps on Windows 10:

1. Open Start.

2. Search for Task Manager and click the top result to open the experience.

   Quick tip: There's not just one way to open Task Manager, you can access the experience in various ways. For example, through the Ctrl + Alt + Del keyboard shortcut, power user menu (Windows key + X keyboard shortcut ), and the Ctrl + Shift + ESC keyboard shortcut.

3. Click on the Performance tab.
4. Select the Memory section from the left pane.

5. See the Slots used section, at the bottom of the page, to confirm the number of slots available on your motherboard.

Once you complete the steps, you'll be able to determine if you can add more memory to your computer, or if you need to replace the memory kit with one with higher capacity per module to increase the available memory.

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When a user wants to add or upgrade memory (RAM) in a computer, they need to know how many memory slots are available. The following section will help you to determine the number of memory slots in your computer, as well as how many are currently being used.

Windows Task Manager

The easiest solution for Windows users is to open the Windows Task Manager.

1. Press the Windows key, type Task Manager, and then press Enter.
2. In the window that appears, click the Performance tab (A), then select Memory (B).
3. In the lower-right corner, the number of slots is displayed in the Slots used: section (C).

4. As you can see, this computer has a total of four memory slots, although only two are currently being utilized.

Use the CPU-Z utility

Another way to get information about memory slots and details about the RAM currently installed on your computer, is to use the free CPU-Z third-party utility.

1. Open an Internet browser and visit the CPUID website.
2. On the left side of the screen, select your operating system.

3. On the next page, select your preferred language.

4. On the next screen, click the DOWNLOAD NOW! button.

6. Once the download has finished, install it from your browser and open the program.
7. Click the SPD tab at the top of the screen, and then click the down arrow in the Memory Slot Selection section.

8. As you can see in the image above, all of the memory slots (in this case, four) are listed in the drop-down menu.

If you select a different slot from the drop-down menu, CPU-Z will tell you additional information about the RAM that is installed, or nothing if the slot is unoccupied.

Examine the motherboard

Sometimes the best way to determine the available memory slots is to open the computer and examine the motherboard. Opening the computer is the best option if were unable to get the Windows Task Manager or CPU-Z to work.

Looking inside the case, the motherboard is the primary large circuit board. On most motherboards, the memory slots are located on either side of the CPU, and resemble what is shown below.

Most computer motherboards have two, three, or four memory slots. Some higher-end motherboards have as many as eight. The motherboard in the picture above has no memory modules installed in any of its three slots.

If your computer has no memory slots available and you want to upgrade, you must remove and replace some of the existing memory.

Additional information

• See our memory definition for further information and related links.