Al frenzy makes Nvidia the world's mostvaluable company | BBC News

Chip-maker Nvidia has become the world's mostvaluable company after its share price climbed to an all-time high on Tuesday.

It is now worth $3.34 trillion (£2.63 trillion), with theprice having nearly doubled since the start of this year.

The firm is now more valuable than fellow tech giantMicrosoft. It overtook Apple earlier this month.

The Californian company's meteoric rise has beenfuelled by its dominance of what analysts call the "newgold or oil in the tech sector" - the chips needed forartificial intelligence (Al).