All you need to know is that that they are orders of magnitude faster than current computers.
Google’s Quantum Computer Is 100 Million Times Faster Than Your Laptop
http://www.sciencealert.com/google-s-quantum-computer-is-100-million-times-faster-than-your-laptop
Microsoft can still manage to write a version of Excel that will bring it to its knees. :)
Not mine. Mine has a Turbo button and a math coprocessor!