Carbon Nanotube and other materials for Computers

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Is carbon nanotube the only material found that would make a faster and more efficient computer or are there other materials or methods found that would make a faster computer as well? Here is an article on carbon nanotube

 

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Graphene, gallium arsenide, various other materials.
There are so many ideas explored (including silicon with improved manufacturing methods), we'll have to see which one wins.

 

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Also need to keep it low cost, durable, and saves power, carbon is one of the most abundant material found on earth

 

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Silicon makes up 1/4 of the crust of earth, 1000 times more than carbon. Semiconductors don't need so much material.

 

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Interesting, is graphene transistor harder to make then carbon nanotube transistor? I was originally looking into the effect of graphene as you pointed out. What is the difference between the two?

 

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If someone would know definite answer to those questions, there would not be research for so many types.
You can check recent publications to see the current research status.