Back in BETA days we tried it on less RAM (512MB).
1. No. The extra stuff does make it slower. But it's extra stuff so how to compare?
2. Yes. 512MB, It ran. I would not give it to anyone like that.
3. No. Why? Because it's rare for the upgrade to work out. Most of the time you find you clean install and then do the usual driver hunts.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?