I will probably keep some systems on Windows 7 also, but I want to have a Windows 10 system set up and ready BEFORE Windows 7 "support" ends. Actually, you could build a version of the same system I am building for not much $$$. I used an i9 CPU, but you could use a $65 dual core Celeron in the same system, and I don't think it would be too slow for most applications.