Open Task Manager
Go to the Performance tab
Click Memory
Check the Speed value
Open System Information
Search for System Information in Start
Look under Installed Physical Memory and related memory details
Use Command Prompt
Run `wmic memorychip get speed`
Use PowerShell
Run `Get-CimInstance Win32_PhysicalMemory | Select-Object Speed`
Check BIOS or UEFI
Restart the computer
Enter BIOS or UEFI setup
Find the memory or DRAM information
Use third-party tools
Open CPU-Z
Check the Memory or SPD tab
Use macOS
Click the Apple menu
Select About This Mac
Check the memory details
Use Linux
Run `sudo dmidecode –type memory`
Check the speed listed for each RAM module