What "checking" your computer actually means

When someone says "check your computer," they usually mean one of three things: look at what hardware you have inside it, see how fast it's running right now, or find out whether it can handle a specific program. Each one uses different tools and answers a different question. You don't need special software or technical knowledge — Windows and Mac both have built-in ways to see this information in a few clicks.

The reason you might want to check is practical: you're about to install something and want to know if your machine can handle it, your computer feels slow and you want to see what's using resources, or you're selling it and need to tell someone what's inside. This guide covers the most common checks and where to find each one.

Key Takeaways

  • Windows users can see their hardware specs by right-clicking "This PC" and selecting Properties, or by opening Settings and going to System > About.
  • Mac users can click the Apple menu, select About This Mac, and see processor, memory, and storage all in one window.
  • To check what's using your computer's power right now, open Task Manager on Windows (Ctrl+Shift+Esc) or Activity Monitor on Mac (Applications > Utilities).
  • Before installing a program, compare its system requirements against your actual specs — the program's website or installer will list what it needs.
  • Storage space, RAM, and processor type are the three specs that matter most for whether a program will run smoothly.

Finding your hardware specs on Windows

The fastest way is to right-click on "This PC" or "My Computer" on your desktop or in File Explorer, then click Properties. A window opens showing your processor type, installed RAM, and Windows version. This is usually enough if you just need to know the basics.

For more detail, open Settings (press Windows key + I), go to System, then click About. You'll see processor name and speed, total RAM, device name, and Windows version. If you need even more information — like your graphics card, motherboard, or exact storage breakdown — open the Run dialog (Windows key + R), type msinfo32, and press Enter. This opens System Information, which lists nearly everything inside your computer.

Finding your hardware specs on Mac

Click the Apple menu in the top-left corner and select About This Mac. One window shows your processor, memory (RAM), storage capacity, and graphics card. This is usually all you need. The information is organized clearly and you can see it all at once.

If you need storage details broken down by category — how much space your applications use, how much is photos, how much is other files — click Storage in that same window. For even more technical details, click System Report, which shows serial numbers, bus speeds, and other hardware information most people don't need.

Checking what's running and using resources right now

On Windows, press Ctrl+Shift+Esc to open Task Manager directly. You'll see a list of programs currently running and how much of your CPU, memory, disk, and network each one is using. If your computer feels slow, this shows you which program is the culprit. Click the column headers to sort by CPU or Memory to see what's taking the most power.

On Mac, open Applications, then Utilities, then Activity Monitor. It works the same way — you see running programs and their resource use. Click the CPU or Memory tabs to see which programs are using the most. If something is using 90% of your CPU and you don't recognize it, you can look up the process name online to find out what it is.

Checking if your computer can run a specific program

Every program has system requirements — the minimum hardware it needs to work. Find these on the program's official website, usually in a section called Requirements, Specs, or System Requirements. You'll see something like "Windows 10 or later, 8 GB RAM, 2 GB storage space, Intel Core i5 or equivalent."

Compare each requirement against what you found when you checked your specs. If your computer meets all of them, the program should run. If you're below on any one — especially RAM or processor — the program may run very slowly or not at all. Storage is the easiest to fix (you can delete files or add an external drive), but RAM and processor cannot be upgraded on most laptops.

Understanding the three specs that matter most

RAM (memory) is how much space your computer has to work on tasks right now. More RAM means you can have more programs open at once without slowdown. Most modern programs need 4 to 8 GB; newer or demanding programs ask for 16 GB or more.

Processor (CPU) is how fast your computer thinks. A faster processor handles complex tasks quicker. The name tells you the type (Intel Core i5, AMD Ryzen 7, Apple M1) and the generation (newer is faster). If a program asks for a processor you don't have, it usually won't run at all.

Storage is how much space you have to save files and install programs. If you're running low, your computer slows down because it has nowhere to write temporary files. You can see how much is free by checking your drive properties on Windows or About This Mac on Mac.

What to do if your computer doesn't meet the requirements

If you're short on storage, delete files you don't need, move photos and videos to an external drive, or uninstall programs you're not using. You can also buy an external hard drive or USB drive for extra space. Storage problems are the easiest to solve.

If you're short on RAM, you may be able to add more if you have a desktop computer — check your computer's manual or search for your model number plus "upgrade RAM." Most laptops cannot be upgraded. If you're short on processor power, there's no upgrade path — you would need a new computer.

Before giving up, try closing other programs and restarting your computer. Sometimes a program runs slowly not because your hardware is too weak, but because something else is using resources. Task Manager or Activity Monitor will show you what's running.

Frequently Asked Questions

How do I know if my computer is 32-bit or 64-bit?

On Windows, open Settings > System > About and look for "System type." It will say either 32-bit or 64-bit. On Mac, click Apple menu > About This Mac — if it says "Apple Silicon" or lists an Intel processor, it's 64-bit. Most modern computers are 64-bit, which can use more RAM and run newer programs.

What does "processor speed" mean when I see something like "2.4 GHz"?

GHz (gigahertz) is how many billion operations per second the processor can do. Higher numbers are faster, but a newer processor at 2.4 GHz may be faster than an older one at 3.0 GHz because architecture matters too. For most people, the processor name (Core i7, Ryzen 5) matters more than the exact speed.

Can I check my specs on a computer that won't turn on?

No — you need the computer running to see its specs through the operating system. If you have the original box or paperwork, the specs may be listed there. Otherwise, you may need to take it to a repair shop or contact the manufacturer with your serial number.

Why does my computer show less storage space available than I bought?

The operating system (Windows or Mac) takes up space, and manufacturers measure storage differently than the operating system does. A 1 TB drive usually shows around 930 GB available. This is normal and not a problem unless you're very close to full.

Is it safe to look at Task Manager or Activity Monitor?

Yes — looking at what's running is completely safe. Be careful if you decide to close a program from Task Manager, because closing the wrong one could cause problems. If you're not sure what something is, search for its name online before closing it.