I suspect that depends on the resource and the current driver version. If you are running a Windows 7 driver for a device on Windows 10 it will be a lot more CPU intensive than running an optimized driver. read more
In my experience with this gear, Windows 10 is do feel lighter. Booting and processing feel more fast than windows 10. But it different when you only have minimum requirement though. The interface of windows 10 need more resource than windows 7, you will got stuttering on interface while doing something. read more
Yes, windows 10 is faster than previous windows versions also Checkout these cool features of WINDOWS 10 1) The Cortana virtual assistant Microsoft’s virtual assistant, which has been present on its phone operating system for a while now, is one of the headline features of Windows 10. read more