A little more about the announcement here -
http://spectrum.ieee.org/tech-talk/s...notubes-debuts
It is only a 1kHz one instruction set computer (OISC) as a proof of concept.
Though it is
Turing complete, it certainly won't be breaking any speed records.
Progress on carbon nanotubes has been comparatively slow since they
were discovered 22 years ago and many researchers had switched to
researching one-atom thick carbon sheets which they called graphene.