If you're worried about investing in Nvidia at its current valuation, you may want to take a closer look at these two other names.Nvidia (NVDA 1.63%) seems well on its way to end another year with stunning gains. Shares of the semiconductor giant have shot up more than 150% so far in 2024 after a stellar performance last year, and there is a good chance that it can continue to fly higher.After all, Nvidia management points out that the demand for its artificial intelligence (AI) chips continues to remain so ...