ReviOS, the New Windows 10 At this very moment, I'm running ReviOS on a very low-power Netbook an Acer Aspire One 722 with AMD C60 CPU (2 x 1GHz!) and 4 GB RAM! HDD is 500GB WD. ReviOS is a 'Custom' Windows 10 2004H2 which is free to download from ReviOS are build from Windows 10 Enthusiasts and strongly based on the original Microsoft Windows 10, that far, that it also used the Activation via Microsoft. If the user's PC has already an HWID with Digital License for Windows 10, ReviOS will automatically use that HWID/Digital License and activate with no problem. The 'Developers' of ReviOS saying on there Website: Those who like to know more about this OS should checkout via the Internet! The basic use of space by installing the 64bit version is just as little as 9.5GB! I installed a few Utilities and use now 10.3GB. Overall, and for sure because of the removal of a lot of Apps/Files, etc. this OS is running well on that low-powered Netbook! I would say, for those users who always complaining about Windows 10 and its huge content of Apps/Files, this is an OSD to get checked out. For my own, I like to use it maybe on a daily basis because, for the first few hours of use, it looks very promising to be an excellent alternative to the full Windows 10 of Microsoft!