Nvidia Corp. has in recent months asked suppliers to change the design of the server racks for its new Blackwell graphics processing unit due to an overheating problem, leading to worries about delays,

The Blackwell graphics processing units overheat when connected together in server racks designed to hold up to 72 chips, the report said, citing sources familiar with the issue. The chipmaker has asked its suppliers to change the design of the racks several times to resolve overheating problems,

Investors will be paying close attention to sales of Nvidia’s recently-launched Blackwell chip. Nvidia’s earnings will take centre stage for the US stock market this week, while FTSE 100 firms Imperial Brands, Severn Trent and Halma report across the pond.