How to Check Your Computer's Specs in Windows, Mac, and Linux

Where to find your computer's specs

Your computer stores its own specifications — processor type, RAM amount, storage size, graphics card — in a system information panel you can open in seconds. On Windows, press the Windows key and type "System Information" into the search box, then open the app. On Mac, click the Apple menu in the top left, select "About This Mac", and the window that opens shows your processor, memory, and storage. On Linux, open a terminal and type lsb_release -a for operating system details, or lscpu for processor information.

These built-in tools show you what hardware is actually in your machine right now. They do not require any downloads or third-party software. The information they display is the same information manufacturers use when they built your computer.

Key Takeaways

Windows users can find complete specs by searching "System Information" in the Start menu and opening the app that appears.
Mac users click the Apple menu, select "About This Mac", and see processor, RAM, and storage in one window.
Linux users open a terminal and type commands like lscpu or lsb_release -a to view system details.
Your computer's specs tell you what programs it can run, how fast it will perform, and whether you need upgrades for specific tasks.

Finding RAM and storage on Windows

Open System Information (search for it in the Start menu). Look for "Installed RAM" — this is your memory, measured in gigabytes. A computer with 8 GB of RAM can run basic web browsing and office work. A computer with 16 GB handles video editing, photo work, and multiple programs at once. A computer with 32 GB or more is built for professional work like 3D rendering or large database management.

For storage, right-click the C: drive (or whichever drive holds your Windows installation) in File Explorer and select "Properties". The pie chart shows how much space is used and how much is free. If you see less than 10 percent free space, your computer will slow down because Windows needs room to write temporary files. Storage is measured in gigabytes (GB) or terabytes (TB) — 1 TB equals 1,000 GB.

Finding processor and graphics information on Windows

In System Information, look for "Processor" — this is your CPU. The name tells you the brand (Intel or AMD), the generation (like "12th Gen" or "Ryzen 5000"), and the model number. A newer processor with a higher number generally performs better, but the generation matters more than the exact model number. An 11th generation Intel processor is slower than a 12th generation Intel processor, even if the model numbers are close.

For graphics, look for "Display Adapters" in System Information. If you see "Intel UHD Graphics" or "AMD Radeon Graphics", your computer uses built-in graphics that share your RAM. If you see "NVIDIA GeForce" or "AMD Radeon RX", you have a dedicated graphics card — a separate piece of hardware that makes games and video work much faster. Dedicated graphics cards have their own memory (called VRAM), which System Information may not show. For exact VRAM, right-click your desktop, look for "Graphics Settings" or "NVIDIA Control Panel", and find the card's properties.

Finding specs on a Mac

Click the Apple menu in the top left corner and select "About This Mac". The window that opens shows your processor (like "Apple M2" or "Intel Core i7"), the amount of RAM under "Memory", and your storage under "Storage". If you see "Apple M1", "M2", or "M3", you have an Apple Silicon processor — these are newer and faster than Intel processors in Macs. If you see "Intel Core i5", "i7", or "i9", your Mac uses an Intel processor.

To see more detail about your storage, click "Storage" in the same window. A breakdown shows which folders and programs are using the most space. If you see less than 10 GB free on a Mac with 256 GB total storage, or less than 20 GB free on a Mac with 512 GB or more, consider deleting old files or moving photos to external storage.

Finding specs on Linux

Open a terminal (search for "Terminal" in your applications menu). Type uname -a and press Enter to see your operating system and kernel version. Type lscpu and press Enter to see your processor details, including the number of cores and threads. Type free -h and press Enter to see your RAM — the "Mem:" line shows total memory and how much is in use.

For storage, type df -h and press Enter. Look for the line that starts with "/" — this is your main drive. The "Size" column shows total storage, and the "Avail" column shows free space. If you need to know what graphics card you have, type lspci | grep -i vga and press Enter. Linux distributions vary, so if a command does not work, your system may use a different tool, but these commands work on most common distributions like Ubuntu, Fedora, and Debian.

What your specs mean for the programs you can run

Your processor and RAM determine what software will run smoothly. A program's system requirements list a minimum processor type and RAM amount. If your computer meets or exceeds those numbers, the program will work. If your computer falls short, the program will either not start or run very slowly.

Your graphics card matters for games, video editing, and 3D work. Built-in graphics handle everyday tasks like web browsing and document editing. A dedicated graphics card is necessary for modern games, professional video editing, or 3D modeling. Your storage size determines how many programs and files you can keep. A 256 GB drive fills up quickly if you store large video files or photo libraries — a 512 GB or 1 TB drive gives you more room.

When to check your specs before buying software or upgrades

Before you buy a program, a game, or a subscription service, check the system requirements on the publisher's website. Compare those requirements to your specs. If the program needs 16 GB of RAM and you have 8 GB, the program will not run well. If the program needs an NVIDIA graphics card and you have Intel built-in graphics, it may not run at all.

If you are thinking about upgrading — adding more RAM, replacing your drive with a larger one, or installing a new graphics card — your current specs tell you what is possible. Some laptops have RAM soldered to the motherboard and cannot be upgraded. Some desktops have room for two or three extra drives. Knowing your current setup before you shop for upgrades saves you from buying parts that will not fit or work with your machine.

Frequently Asked Questions

What does "cores" and "threads" mean on my processor?

Cores are the actual processing units inside your CPU. Threads are tasks the processor can handle at the same time. A processor with 4 cores and 8 threads can work on 8 tasks simultaneously. More cores and threads mean your computer can handle more work at once, which matters for video editing, 3D work, and running many programs together.

Is 8 GB of RAM enough?

Eight gigabytes is enough for web browsing, email, office work, and streaming video. If you edit photos or video, use design software, or run virtual machines, you will want 16 GB or more. Check the system requirements of the programs you use most — that tells you what you actually need.

What is the difference between SSD and HDD storage?

An SSD (solid-state drive) has no moving parts and is much faster — your computer starts up in seconds and programs open when ready. An HDD (hard disk drive) uses spinning platters and is slower but cheaper per gigabyte. Most new computers come with SSDs. If your System Information shows your drive model and it contains "SSD" or "NVMe", you have fast storage. If it says "HDD" or shows a model number with no SSD designation, you have older, slower storage.

Can I upgrade my laptop's processor?

No. The processor is soldered directly to the motherboard in almost all laptops and cannot be removed or replaced. You can upgrade RAM and storage in some laptops, but the processor is permanent. If you need a faster processor, you will need a new laptop.

Why does my computer show less RAM than I bought?

Your operating system and graphics card reserve some RAM for their own use. If you installed 16 GB, you might see 15.9 GB or 15.5 GB available — this is normal. If you see significantly less (like 12 GB when you installed 16 GB), one of your RAM sticks may have failed or not seated properly. Shut down, open the case, and reseat the RAM by pushing it firmly into its slot until it clicks.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.