RAM ( Random Access Memory) , the CPU ( central processing unit ) and the hard drive – much prefer a solid state drive are the integral parts of having a computer running quickly and efficiently.
Windows should now have a minimum of 8GB of RAM to run efficiently with multiple programs running and for a smooth experience – 16GB of RAM
Macs again 8GB of RAM is a minimum
If you are upgrading a computer from Windows 7 to Windows 10 make sure it has again at least 8GB of RAM