[Retric]

And all true scotsman wear kilts. We consider 8bit computers real computers even though they can't run windows 8. The same can be said for quantum computers, a 64qubit quibit quantum CPU could be vary useful even if it can't factor 4096bit numbers.

http://en.wikipedia.org/wiki/Qubit

PS: We have solid state 4bit quantum computers right now. They may not be useful for much, but that's in part because we have spent hundreds of billions of dollars perfecting classical computers.