Two of the biggest artificial intelligence (AI) winners in recent years have been Nvidia (NVDA 2.62%) and Palantir Technologies (PLTR 1.10%). Given how much growth both stocks have already registered, investors may be wondering which stock has the most additional upside from here. The quick answer to that question is Palantir, largely based on it being a much smaller company.Both stocks have solid upside potential, so let's look at what they each bring to the table. NvidiaNvidia has become the best way to p ...