How to Check If You Can Add RAM on Windows 2026: Full Guide

How to Check Whether You Can Increase RAM on a Windows PC

Are you thinking of increasing the RAM in your computer but do not know where to start? In this article is everything you want to know about increasing RAM in desktops and laptops running Windows. We will first answer the important question many people ask, "How do I know if I really need to increase my RAM?", then move on to how to know the specs of the RAM sticks in your computer, the vacant slots, and the RAM specs you should use to achieve the highest compatibility.

Do You Even Need to Increase Your Computer's RAM?

This topic is very important, because many people believe that increasing RAM will solve all the problems they face with their computer. The truth is the exact opposite, as often the problem is not in the RAM itself. So you must first assess how much you need to increase RAM in the first place. A sudden shutdown, a blue screen, or problems when opening files or running programs may indicate a RAM problem, but these problems can also occur in many other cases unrelated to RAM. So it is best to do the following simple test.

First, run the program that causes the aforementioned problems, then minimize it and open Task Manager using the Ctrl + Alt + Delete shortcut. In the Task Manager window, pay attention to the percentage of RAM consumed while running this program in the background. If this percentage hovers around 60% (or less) without reaching 100%, it means increasing RAM is not necessary. But if the percentage reaches 100% more than once and you are suffering from the problems mentioned earlier, it means you need to increase the RAM in your computer.

How Do You Check Current and Maximum Supported RAM?

After confirming you really need to increase RAM, you must check the amount of RAM in your computer. Go to Settings, then System, and at the bottom of the list choose About; from here you can view the Installed RAM. In the example given, the computer has 6 GB of RAM. The next step is to check the amount of RAM your computer can handle, using PowerShell. Search for it, right-click it, and choose Run as Administrator. After opening the program, copy the following command and press Enter: Get-CimInstance Win32_PhysicalMemoryArray. Note the number under MaxCapacity, which represents the total RAM in kilobytes that your computer's motherboard can handle.

To convert this number to gigabytes, divide it by 1,048,576. Here is what each of these values corresponds to in gigabytes: 8,388,608 equals 8 GB; 16,777,216 equals 16 GB; 33,554,432 equals 32 GB; 67,108,864 equals 64 GB; and 134,217,728 equals 128 GB. For example, if the maximum available size is 32 GB and you are using only 16, it means you can add another 16 GB of RAM. But this does not mean you should buy and install a RAM stick directly; you must first make sure there is a free Slot on the motherboard.

How Do You Check for Free RAM Slots?

We mean the presence of a vacancy on the motherboard to place an additional RAM stick, called a RAM slot or RAM socket. Most computers contain two or four slots for RAM, and it is essential to make sure there is an empty slot before buying. To check this, open Task Manager, go to the Performance tab, and pay attention to the RAM information at the bottom. Next to "Slots Used," you can find the number of available ports and how many of them are used. If you hover the mouse over this box, the size each port supports will also appear. If you have a free slot, you can move to the next step.

What If There Are No Free Slots or You Hit the Max?

If you have reached the maximum available RAM size shown in PowerShell under MaxCapacity, it means you cannot do anything about it. As a last attempt, check the motherboard's information and look for the RAM size it can handle; if it really does not allow adding any more sticks, changing your laptop or your computer's motherboard is the only solution to increase RAM.

But if the maximum available size is larger than what you are actually using, yet there is no empty slot available to add a RAM stick, you should check whether the motherboard supports larger RAM modules. If it does, you can then replace it with a larger-capacity RAM stick, taking into account the compatibility between the motherboard and the new RAM stick in speed, capacity, and DDR. If the motherboard does not support larger RAM sizes, the solution here is also to change your laptop or your computer's motherboard.

How Do You Check RAM Speed, Type, and Other Specs?

So you must verify that the motherboard can handle additional RAM and has a free slot; if both criteria are met, you are halfway there. The next step is to check the specs of the current RAM sticks, specifically their speed and type, to avoid falling into any compatibility problems. You can access this information via PowerShell using this command: Get-CimInstance CIM_PhysicalMemory. In the information list, note the RAM speed next to Speed and its type next to MemoryType. Each number in MemoryType has a specific meaning; for example, the number 24 indicates the RAM is DDR3. If the number is 0, it means the RAM type is unknown, but look at the number next to SMBIOSMemoryType: 20 means DDR, 21 means DDR2, 22 means DDR2 FB-DIMM, 24 means DDR3, 26 means DDR4, and 34 means DDR5.

Generally, if you want a simplified way to know the RAM specs, you can use additional programs like CPU-Z. Since it is generally impossible to use different DDR types in RAM without compatibility problems, we advise you to buy RAM with the same speed and type as the RAM currently in use. There are many ways to pick the most suitable RAM stick for your computer, but simply picking a stick with the same speed and type ensures you avoid many compatibility problems. If you use a laptop or do not know how to remove and install RAM, we advise you to seek help from a technical expert, as it can often be difficult, especially since RAM sticks are sometimes permanently attached to the motherboard.