Despite being effectively cut off from China, its sales have continued to surge on booming demand from domestic Silicon Valley giants.However, Nvidia’s shares have been rocked by US trade tensions with Beijing, with the White House imposing a series of export restrictions on Nvidia’s chip sales to China.These are being deployed in vast numbers in data centres across the US. Some of these data hubs, each of which houses tens of thousands of Nvidia’s Blackwell chips, are intended to be the size of a small cit ...