“Why is my Windows 11 PC so slow?!” If you’ve ever yelled that at your screen, you’re not alone. RAM is often the hidden culprit behind lag, stutters, and random freezes.
Let me show you how to check your RAM type, speed, and size in Windows 11, and why it matters for real-world performance, stability, and future upgrades.
When you know your RAM type, speed, and real-time usage, you can quickly spot bottlenecks, decide whether an upgrade is worth it, and fix performance issues without guesswork.
 In this guide, you and I will walk step by step through built-in Windows tools like Task Manager, System Information, and Windows Settings, plus a few tricks with Command Prompt and PowerShell, so you always know exactly what memory you’re working with.
Understanding your RAM specifications is just one part of system maintenance. If you need to verify other hardware components like your processor, storage, or graphics card, check out my complete guide on checking PC specs in Windows 11.
Table of Contents
Method 1: Check RAM Using Task Manager in Windows 11 (Fastest Method)
Viewing RAM type and speed in Task Manager is one of the quickest ways to confirm whether your memory is running as expected and to capture key specs before planning an upgrade. Windows 11 shows live details such as total capacity, current usage, and configured RAM speed, and on some systems, it can also display the memory type and form factor directly in the Memory panel.
- Press Ctrl + Shift + Esc on your keyboard to open Task Manager instantly, or right-click an empty area of the taskbar and select Task Manager from the menu.
- Click the Performance tab in the left sidebar of the Task Manager window. If you don’t see a sidebar with tabs, click the hamburger menu icon (three horizontal lines) in the upper-left corner to expand the view.
- Click Memory in the list of hardware components displayed in the left panel.
- Look at the upper-right corner of the window to view your total RAM capacity, which displays as a number followed by “GB” (such as “16.0 GB” or “32.0 GB”).
- Locate the RAM speed at the bottom-center of the screen, displayed in MT/s (such as “3200 MT/s” or “4800 MT/s”).
- Check the form factor information below the speed, which shows “DIMM” for desktop RAM or “SO-DIMM” for laptop RAM.
- Find “Slots used” at the bottom of the screen, which displays as a fraction such as “2 of 4” (meaning two slots occupied out of 4 total) or “2 of 2” (meaning all slots are full).
- Check the “Hardware reserved” value at the bottom to see how much RAM is allocated to system hardware. This amount typically ranges from 100 MB to 2 GB and is normal.
Method 2: Using System Information Tool for Detailed RAM Specs in Windows 11
Using the System Information tool gives you a consolidated view of key RAM details such as total physical memory, available memory, and basic module information, without needing commands or third-party apps. This method is especially helpful when you want a quick, read-only snapshot of your system’s memory configuration for documentation, troubleshooting, or upgrade planning.
- Press Windows + R on your keyboard to open the Run dialog box.
- Type msinfo32 in the text field and press Enter on your keyboard.
- Look at the right panel where system details are displayed, which appears automatically when System Information opens.
- Scroll down in the right panel until you locate Installed Physical Memory (RAM)and Total Physical Memoryto see your total installed RAM and the amount available to Windows
- Scroll further in System Summary and review Available Physical Memory entry to understand how much RAM is currently free.
- Click File in the menu bar at the top of the System Information window to export your information if needed.
- Select Export from the dropdown menu that appears.
- Choose a save location in the dialog box that opens, type a filename in the text field, and click Save to export your system information as a text file.
Method 3: Check RAM in Windows 11 Using Command Prompt for Detailed RAM Specs
Checking detailed RAM specs in Command Prompt lets you see the capacity, speed, type, form factor, manufacturer, part number, and serial number for each module without opening your PC. These commands are especially useful when planning an upgrade or diagnosing memory issues, because they reveal exactly which sticks are installed and where they sit on the motherboard.
- Press the Windows key on your keyboard, type cmd or Command Prompt, right-click Command Prompt in the search results, and select Run as administrator.
- Click Yes in the User Account Control prompt if it appears asking for permission.
- Type wmic memorychip get capacity in the Command Prompt window and press Enter to view RAM capacity.
Read the capacity values displayed in the “Capacity” column, which show each RAM module’s size in bytes. Divide the displayed number by 1,073,741,824 to convert bytes to gigabytes (for example, 8589934592 bytes equals 8 GB).
- Type wmic memorychip get speed in the Command Prompt window and press Enter to check RAM speed.
Read the RAM speed values displayed in MT/s under the Speed column in the “Speed” column (such as 2400, 3200, or 4800).
- Type wmic memorychip get formfactor in the Command Prompt window and press Enter to check the form factor.
Interpret the numerical code displayed in the “FormFactor” column using these values: 8 = DIMM (desktop RAM), 12 = SODIMM (laptop RAM).
- Type wmic memorychip get devicelocator, manufacturer, partnumber, serialnumber, capacity, speed, memorytype, formfactor in the Command Prompt window and press Enter to view all specifications at once.
Read the table that displays with columns showing DeviceLocator (slot position), Manufacturer (brand name), PartNumber (model number), SerialNumber (unique identifier), Capacity (size in bytes), Speed (MT/s), MemoryType (DDR generation code), and FormFactor (DIMM or SODIMM code).
- Type wmic memorychip list full in the Command Prompt window and press Enter to see complete information.
Scroll through the extensive vertical list that displays every available RAM property for each module installed.
- Type wmic memorychip list full > C:\RAM_Info.txt in the Command Prompt window and press Enter to export the information to a file.
The text file contains all RAM specifications in an organized, readable format that you can email, print, or keep for your records. This is especially helpful when contacting manufacturers about warranty claims or compatibility questions.
Method 4: Check RAM in Windows 11 Using Windows PowerShell for Advanced RAM Details
Using PowerShell to check RAM gives you scriptable, highly detailed insight into capacity, speed, type, form factor, and manufacturer for each installed module. This method is ideal when you need precise hardware data for upgrades, inventory, or remote diagnostics across multiple Windows 11 devices.
- Press the Windows key, type PowerShell, right-click Windows PowerShell in the search results, and select Run as administrator.
- Click Yes in the User Account Control prompt if it appears asking for permission.
- Type Get-CimInstance -ClassName Win32_PhysicalMemory | Select-Object Manufacturer, Capacity, Speed, and press Enter to view basic RAM information.
Read the formatted table that displays Manufacturer (brand name), Capacity (size in bytes), and Speed (MT/s) for each installed RAM module, with each row representing one physical memory stick.
- Type Get-CimInstance Win32_PhysicalMemory | Select-Object Manufacturer, @{Name=”Capacity(GB)”;Expression={$_.Capacity/1GB}}, Speed and press Enter to convert capacity to gigabytes.
Read the table that now displays capacity in gigabytes under the “Capacity(GB)” column instead of bytes, making it easier to see whether you have 8GB, 16GB, or 32GB modules.
- Type **Get-CimInstance Win32_PhysicalMemory | Format-List *** and press Enter to view all RAM properties.
Scroll through the extensive vertical list that displays every available property for each RAM module, including BankLabel, DeviceLocator, Manufacturer, PartNumber, Capacity, Speed, ConfiguredClockSpeed, ConfiguredVoltage, MemoryType, SMBIOSMemoryType, FormFactor, SerialNumber, and additional technical attributes.
- Type Get-CimInstance Win32_PhysicalMemory | Format-Table Manufacturer, BankLabel, @{Name=”Capacity(GB)”;Expression={$_.Capacity/1GB}}, Speed, PartNumber -AutoSize and press Enter to create a custom formatted table.
Read the formatted table that displays with automatically adjusted column widths showing Manufacturer name, BankLabel (slot identifier), Capacity in gigabytes, Speed in MT/s, and PartNumber for ordering matching RAM.
- Type (Get-CimInstance Win32_PhysicalMemory | Measure-Object -Property Capacity -Sum).Sum / 1GB and press Enter to calculate the total system RAM.
Read the single number that displays representing your total system RAM in gigabytes, combining all installed modules.
- Type Get-CimInstance Win32_PhysicalMemory | Select-Object BankLabel, SMBIOSMemoryType and press Enter to check RAM type.
Interpret the numerical codes displayed in the “SMBIOSMemoryType” column using these values: 24 = DDR3, 26 = DDR4, 34 = DDR5, 0 = Unknown.
- Type Get-CimInstance Win32_PhysicalMemory | Select-Object Manufacturer, BankLabel, @{Name=”Capacity(GB)”;Expression={$_.Capacity/1GB}}, Speed, PartNumber, SerialNumber | Export-Csv -Path C:\RAM_Details.csv -NoTypeInformation and press Enter to export information to CSV.
The CSV file contains all selected RAM specifications in a structured, spreadsheet-friendly format. You can sort, filter, or include this data in reports. The -NoTypeInformation parameter prevents PowerShell from adding type metadata to the first line of the CSV.
Method 5: Check RAM Speed and Capacity in Windows 11 Using Windows Settings
Checking how much RAM installed and the RAM speed in Windows 11 Settings is the quickest way without using any advanced tools. This view is useful when you just want to confirm total capacity (for example, 8 GB, 16 GB, or 32 GB) and speed of RAM before deciding whether a RAM upgrade is necessary.
- Press Windows + I on your keyboard to open the Settings app.
- Click System in the left sidebar of the Settings window.
- Scroll down in the right panel and click About at the bottom of the list.
- Check the Installed RAM box which displays total RAM capacity and RAM speed
- Click the Device specifications section to expand it if it’s not already open.
- Look for Installed RAM in the list, which displays your total memory capacity followed by “GB” (such as “16.0 GB” or “32.0 GB”), and note the usable amount shown in parentheses if displayed.
Conclusion
You now have five different methods to check your RAM specifications in Windows 11, from the quick Settings app overview to comprehensive PowerShell commands that reveal manufacturer details and part numbers. I’ve shown you how to find your RAM capacity, speed (MT/s), type (DDR4 or DDR5), form factor, and available slots. Everything you need before upgrading or troubleshooting performance issues.
Choose the method that fits your needs. Task Manager for visual details with real-time usage graphs, Command Prompt or PowerShell for complete technical specifications you can export, or Settings for the fastest capacity check. The most important takeaway is understanding that your RAM speed displays in MT/s; form factor (DIMM vs SO-DIMM) and available slots are essential before purchasing additional memory.
Armed with this information, you can confidently verify whether your system meets software requirements, identify compatible RAM for upgrades, or provide accurate specifications when seeking technical support. Save this guide for reference whenever you need to check your system’s memory configuration.
If you want to monitor CPU temperature alongside RAM usage for complete system health tracking, read my step-by-step tutorial How to Check CPU Temperature in Windows 11.
Frequently Asked Questions (FAQs)
Hardware reserved memory allocates RAM to integrated graphics, BIOS, and system firmware. This typically ranges from 100MB to 2GB. Laptops with integrated graphics reserve more because the GPU shares system RAM. This is normal and doesn’t indicate a problem.
For basic tasks, 2400-2666 MT/s is sufficient. For gaming, 3200-3600 MT/s (DDR4) or 4800-5200 MT/s (DDR5) provides good performance. Professional workloads like video editing benefit from 3600+ MT/s (DDR4) or 5600+ MT/s (DDR5). Beyond these speeds, performance gains diminish significantly.
No. DDR4 and DDR5 use different physical slots and are not compatible. Upgrading to DDR5 requires a new motherboard and processor that support DDR5. Check your motherboard specifications before purchasing any RAM.
DIMM (Dual Inline Memory Module) is the full-size RAM used in desktop computers, measuring approximately 133mm long. SO-DIMM (Small Outline DIMM) is the compact version used in laptops and mini PCs, measuring approximately 67mm long. These formats are not interchangeable.
Installed RAM is the total physical memory in your system. Usable RAM is what Windows can actually use after hardware reservation. The difference is the memory reserved for integrated graphics, BIOS, and firmware. A 500MB to 2GB difference is normal.
