If you have a bit operating system, then bumping the RAM up to 4GB is a no-brainer. All but the cheapest and most basic of Windows 10 systems. If you have 4GB RAM, I highly suggest for you to install 64 bit version of Windows, It can process more bits of data, allowing for faster. I have just upgraded today from Windows 7 Home 64 bit edition to Windows 10 Home 64 bit, it shows I have 6 Gb memory, but only Gb usable.
 
 

Windows 10 RAM Requirements: How Much RAM Does Windows 10 Need.windws 10 32bit or 64 bit windows version for 4gb RAM laptop – Microsoft Community

 
December 6, Yes No. With this amount, running multiple basic applications at the same time is not a problem in wkndows cases. Thanks for your feedback. Must-have tools you need for repairing PCs, smartphones, tablets, and much more. Secure boot requires firmware that supports UEFI v2.