For most people, $300 isn't a fortune. But it could help set the stage for some pretty impressive returns if invested in the right companies over a long enough time frame. Nvidia (NASDAQ: NVDA) and Dollar General (NYSE: DG) fit the bill. Let's explore why either of these stocks could turn your money into significantly more over the long term. 

Nvidia is a tech company known for manufacturing graphics processing units (GPUs) and other advanced computer hardware. New growth drivers like artificial intelligence (AI) could help power the next leg of growth. 

The near term has been challenging for Nvidia as pandemic-related tailwinds subside. Fourth-quarter revenue fell 21% to $6.05 billion because of weakness in the company's gaming segment, which declined by almost half. But with the introduction of the AI chatbot ChatGPT, investors are becoming increasingly confident that Nvidia could soon win a new lease on life. 

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Source Fool.com