Persistent Virtualbox guest VM hardware configuration

I wish move to virtual Windows on my corporate laptop, rather to keep it as host OS. I will use this VM Windows on few laptops, but because this will be fully original OS version with Office and serial number, I want to make sure that running VM on first, second and then again on first one, won't lead to a need of activating again this VM Windows.

My question is as follows:

If I run VM Windows copy on multiple laptops, can I be sure that this virtual Windows will alway have the same hardware ? I mean running it on laptop with i5, then on i7 host won't lead to some "hardware changes" in virtual machine ?