IBM introduces fastest transistor | Graphene to power future computers ?

In a recent DARPA project, mainframe giant IBM unveiled fastest transistor on earth, taking the speed to a mind boggling 155 GHz. IBM holds earlier transistor speed record too, earlier fastest transistor was clocked at 100 GHz. Supposedly IBM is working with a new material known as Graphene, instead of usual silicon for making this fastest transistor.So whats the big deal with fastest transistors? well to say the least this new technology can make your future tablets go crazy with speed. The main component of any computer is its CPU which consists of billions of transistors carved on a silicon wafer.
Graphene molecule
A Graphene molecule
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