Nvidia (NASDAQ: NVDA) stock is on a dream run in 2023. Shares of the semiconductor giant have gained a whopping 65% so far thanks to the hype around generative artificial intelligence (AI) applications such as chatbots, which could trigger the need for thousands of graphics processing units (GPUs) -- a market that's dominated by the chipmaker. Does this mean investors should refrain from buying Nvidia stock, especially considering the conditions in the personal computer (PC) market?