The fastest way to see your PC specs

Open the Settings app by pressing the Windows key and typing "Settings", then select it. Go to System, then About. This page shows your processor, RAM, system type, and Windows version in one place — it is the quickest route for most people.

If you need more detail than Settings provides, right-click This PC on your desktop or in File Explorer and select Properties. You will see the same core information in a single window without navigating through menus.

Both methods take under 30 seconds and cover what most people need to know: whether your machine can run a specific program, how much storage you have left, and what version of Windows you are running.

Key Takeaways

  • Settings > System > About shows processor, RAM, storage, and Windows version without opening additional tools.
  • Right-clicking This PC and selecting Properties displays the same information in a single window.
  • Device Manager reveals detailed hardware information including driver versions and device status for troubleshooting.
  • System Information (msinfo32) provides the most complete technical breakdown, including BIOS version and system manufacturer.
  • DirectX Diagnostic Tool shows graphics card, sound card, and display details that Settings does not include.

Using Device Manager for hardware details

Device Manager lists every piece of hardware in your PC and shows whether drivers are up to date. Press the Windows key, type "Device Manager", and open it. Expand each category — Processors, Network adapters, Display adapters, Sound, video and game controllers — to see the exact model of each component.

A yellow exclamation mark next to any device means the driver is missing or outdated. Right-click the device and select Update driver to search for the latest version. This tool is most useful when you are troubleshooting hardware problems or checking whether a specific component is installed.

Device Manager does not show RAM amount or storage capacity, so use it alongside Settings for a complete picture.

System Information for the complete technical breakdown

System Information displays every technical detail Windows tracks about your PC. Press the Windows key, type "msinfo32", and open it. You will see processor speed in megahertz, total physical memory, available memory, system manufacturer, BIOS version, and installed drivers.

This tool is most useful when you are installing specialized software that requires specific hardware or when you need to provide technical support with exact component information. The left sidebar lets you drill down into categories like Hardware Resources, Components, and Software Environment.

Most home users do not need System Information unless they are troubleshooting a specific problem or building a PC and need to verify components before purchase.

Checking graphics and sound card details

Settings and Device Manager do not always show graphics card memory or detailed sound card information. Open the DirectX Diagnostic Tool by pressing the Windows key, typing "dxdiag", and opening it. Click the Display tab to see your graphics card name, memory, and driver version. Click Sound to see your audio device and driver.

This tool is essential if you play games or use graphics-heavy software, because it shows the exact amount of dedicated video memory your card has — information that Settings omits. The System tab also confirms your processor and RAM in a format that some support teams prefer.

DirectX Diagnostic Tool also runs a test on your graphics card to check for driver problems. Click Display, then Run 64-bit DirectX Diagnostic at the bottom to test your graphics hardware.

Storage and disk information

Settings shows total storage but not how much space each drive has or how much is free. Right-click This PC in File Explorer and select Manage to open Disk Management. You will see every drive on your system, its total capacity, and how much space is used and free.

Alternatively, open File Explorer, right-click the C: drive (or whichever drive you want to check), and select Properties. A pie chart shows used and free space at a glance. This method is faster if you only need to check one drive.

Disk Management is useful if you have multiple drives or partitions and need to see how space is divided across them. It also shows drive health status and lets you resize partitions if needed.

Finding your Windows version and build number

Settings > System > About shows your Windows version (Home, Pro, Enterprise) and the build number — a long string like 19045.3693. The build number tells you exactly which updates you have installed and is useful when troubleshooting compatibility problems or checking whether a security patch has been applied.

You can also press the Windows key and R together, type "winver", and press Enter. A window will open showing your Windows version, build number, and installation date. This method is slightly faster if you only need the version and build.

The build number changes each time Windows installs a monthly update. If your build number is older than the current month, Windows Update may have pending updates to install.

Checking RAM and processor speed

Settings > System > About shows total RAM and processor name, but not the processor speed in gigahertz. Open System Information (msinfo32) and look for Processor in the main list — it will show the speed in megahertz. Divide by 1000 to convert to gigahertz: a processor listed as 3600 MHz is 3.6 GHz.

Task Manager also shows processor speed in real time. Press Ctrl + Shift + Esc to open Task Manager, click the Performance tab, then select CPU. The speed shown is your current processor frequency, which varies depending on workload. The base speed (shown in System Information) is the may provide minimum.

RAM speed is not shown in any built-in Windows tool. If you need to know your RAM speed, you can check your PC's manual or use a free third-party tool like CPU-Z, which displays memory frequency and timings.

Frequently Asked Questions

Where do I find my serial number or service tag?

Open System Information (msinfo32) and look for System Serial Number in the main list. If you built your PC yourself, you may not have a serial number. Laptop users can usually find the serial number on a sticker on the bottom of the machine.

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

Open Settings > System > About and look for System type. It will say either "64-bit operating system" or "32-bit operating system". Almost all modern PCs run 64-bit Windows. If yours says 32-bit, you may have trouble running newer software.

Can I check my PC specs without opening Settings?

Yes. Right-click This PC on your desktop and select Properties for a single-window view. You can also press Windows key + R, type "msinfo32", and press Enter to open System Information directly. Both methods skip the Settings app entirely.

What does "available memory" mean in System Information?

Available memory is the amount of RAM currently unused and ready for programs to use. If you have 16 GB total RAM but only 4 GB available, your PC is using 12 GB right now. Restart your PC to free up memory if available memory drops below 1 GB.

Why does my processor speed in Task Manager differ from System Information?

Task Manager shows your current processor frequency, which changes based on workload. System Information shows the base speed — the may provide minimum. Modern processors speed up when you open demanding programs and slow down when idle to save power. Both numbers are correct; they measure different things.