Migrating to Windows 10: Should you let go of your hardware
While you can purchase and install Windows 10 in your existing PCs–the ones currently on Windows 7 OS–it is not recommended. According to Microsoft, Windows 10 has the following minimum requirements
Processor: 1 gigahertz (GHz) or faster processor or SoC.
RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit.