Thomas Fuller | SOPA Images | Lightrocket | Getty Images IREN shares surged in extended-trading on Thursday before giving back nearly all of the gains after the data center operator announced a partnership with semiconductor giant Nvidia . Nvidia and IREN will deploy up to 5 gigawatts of the chip maker's DSX-branded infrastructure designs intended to power artificial intelligence workloads throughout the Australian firm's data center facilities across the world. IREN shares climbed to around 27% as the news broke, then retreated and settled up about 6%. The data center operator will issue Nvidia a five-year right to purchase up to 30 million shares of its ordinary stock at an exercise price of $70 per share, the company said in an announcement. Nvidia will have the right to invest $2.1 billion into the company via the deal. "AI factories are becoming foundational infrastructure for the global economy," Nvidia CEO Jensen Huang said in a statement.…