For all the trillions being spent in the pursuit of artificial intelligence (AI) it still cannot answer the existential question: is AI a truly transformative technology, akin to the railways, or a bubble about to burst, taking global markets with it?

In the absence (for now) of a definitive digitally-generated answer, the performance of chip-maker Nvidia is a good proxy.

The world's largest company by value has released quarterly results that give clues to the future, as well as evidence of current performance.

Nvidia's growth is fundamentally linked to AI. It made its name developing the graphic processing chips (GPUs) that powered gaming and by 2022 was turning over $9bn. A tidy sum, but soon to be eclipsed as CEO Jenson Huang spotted the potential of his GPUs in the nascent AI t

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