For decades, computers have got smaller and more powerful, enabling huge scientific progress. But this can’t go on for ever - in fact the consensus among Silicon Valley’s experts is that Moore’s law is near its end. The Guardian newspaper explores what happens next
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Vanishing point: the rise of the invisible computer
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Modern computers mount their memory several centimetres from their processors. At silicon speeds a centimetre is a long way, meaning significant delays whenever new data need to be fetched. A 3D chip could eliminate that bottleneck by sandwiching layers of processing logic between layers of memory. IBM reckons that 3D chips could allow designers to shrink a supercomputer that currently fills a building to something the size of a shoebox.
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