It depends on the use case https://docs.microsoft.com/en-us/windows-hardware/design/minimum/minimum-hardware-requirements-overview https://docs.microsoft.com/e

It depends on the use case https://docs.microsoft.com/en-us/windows-hardware/design/minimum/minimum-hardware-requirements-overview https://docs.microsoft.com/en-us/windows-hardware/design/min... 256MB for IoT without display, 512MB with display For Mobile or desktop editions they say to have 1GB or higher for 32 bit (which I assume is the use case for a Surface)