SpaceX may be tackling one of the biggest challenges in the chip business: manufacturing the keys to powering artificial intelligence called graphics processing units, or โ€ŒGPUs. Ahead of SpaceX's $1.75 trillion IPO expected this summer, the company has warned prospective investors of its big spending plans to develop โ€ŒAI and other technologies. It lists "manufacturing our own GPUs" among the "substantial capital expenditures" it is undertaking, according to excerpts of its S-1 registration reviewed by Reuters.