The fastest way to check your RAM type

On Windows, open the Run dialog by pressing Windows key + R, type msinfo32, and press Enter. Look for "System Information" in the window that opens. Scroll down to find "Installed Physical Memory" — this shows your total RAM. However, this screen does not tell you the RAM type. For that, you need a second tool.

Open Command Prompt as administrator (right-click the Command Prompt app and select "Run as administrator"). Type wmic MemoryChip get MemoryType and press Enter. The number that appears corresponds to a RAM type: 20 means DDR, 21 means DDR2, 24 means DDR3, 26 means DDR4, and 34 means DDR5. Write down this number so you can match it to the list.

On Mac, click the Apple menu, select "About This Mac", and look at the "Memory" section. It shows your total RAM and the type in one line — for example, "16 GB LPDDR5X". The type appears right after the capacity number.

Key Takeaways

  • Windows users can find total RAM in System Information (Windows key + R, then msinfo32), but must use Command Prompt to see the RAM type.
  • The Command Prompt command wmic MemoryChip get MemoryType returns a number that you match to a type: 24 is DDR3, 26 is DDR4, 34 is DDR5.
  • Mac users see both RAM capacity and type together in About This Mac under the Memory section.
  • RAM type matters when upgrading memory, because you cannot mix DDR4 and DDR5 in the same computer.

Why RAM type matters

RAM comes in different generations, and each generation is physically incompatible with the others. DDR4 and DDR5 have different slot shapes, so a DDR5 stick will not fit into a DDR4 slot. If you are planning to add more RAM to your computer, you must buy the same type your computer already has.

Knowing your RAM type also helps when troubleshooting performance issues or comparing your computer's specs to system requirements for games and software. Different RAM types have different speeds, measured in MHz, and knowing which type you have tells you what speed range to expect.

Using third-party tools to see more detail

If you want to see additional information about your RAM — such as the exact speed in MHz, the manufacturer, and the number of RAM sticks installed — you can use free tools like CPU-Z (Windows) or Speccy (Windows and Mac). Download CPU-Z from cpuid.com, run the installer, and open the program. Click the "Memory" tab to see your RAM type, size, and speed all in one place.

These tools are optional. The built-in Windows and Mac methods above give you the RAM type, which is the main thing you need. Third-party tools are useful only if you want to know the exact speed or compare your RAM to what the manufacturer claims.

Reading the RAM type from your computer's manual or receipt

If you have the original paperwork that came with your computer, the RAM type is usually listed in the specifications section. Look for a line that says "Memory" or "RAM" and check whether it says DDR3, DDR4, DDR5, or another type.

If you bought the computer from a retailer and still have the receipt or order confirmation email, that document may also list the RAM type. Search the email or receipt for "DDR" or "memory" to find the relevant line.

Checking RAM type on a laptop versus a desktop

The steps above work the same way on both laptops and desktops. However, upgrading RAM is much easier on a desktop — most desktops have a removable panel on the side that lets you access the RAM slots directly. Laptops often require you to remove the entire bottom panel or send the computer to a technician.

Before you open your computer to upgrade RAM, check your computer's manual or the manufacturer's website to see whether the RAM is user-replaceable. Some modern laptops have RAM soldered directly to the motherboard, which means it cannot be upgraded at all. Knowing your RAM type first helps you decide whether an upgrade is worth pursuing.

What to do if the Command Prompt method does not work

If you type the Command Prompt command and nothing appears, or you see an error message, try restarting Command Prompt and running it as administrator again. Make sure you typed the command exactly as shown, with no extra spaces.

If the command still does not work, use CPU-Z instead. Download it, run it, and click the Memory tab. It will show your RAM type without requiring any typing. This method works on almost all Windows computers.

Frequently Asked Questions

Can I check my RAM type without opening Command Prompt?

Yes. Use CPU-Z (a free download from cpuid.com) or Speccy, which show your RAM type in a graphical window. On Mac, use About This Mac from the Apple menu. These methods do not require typing commands.

What if my computer shows different RAM types in Command Prompt?

If you see multiple numbers, your computer has multiple RAM sticks and they may be different types or speeds. This is unusual but possible if you upgraded your RAM at different times. All sticks should ideally be the same type and speed for best performance.

Does knowing my RAM type help me buy new RAM?

Yes. When you shop for RAM, you must match the type your computer currently has. If your computer has DDR4, you must buy DDR4. Buying the wrong type will not fit into your computer's slots.

Is DDR5 faster than DDR4?

DDR5 has higher theoretical speeds than DDR4, but real-world performance difference depends on what you are doing. For everyday tasks like web browsing and email, the difference is not noticeable. For video editing, 3D rendering, or gaming, DDR5 may offer a small improvement.