Former hedge fund manager Jim Cramer said on Thursday that South Korean chip giant SK Hynix will debut on Nasdaq on Friday, but he warned that the South Korean memory chip giant also comes with significant investment risks. Cramer said, "The memory chip industry is in a high-growth phase, and if you're willing to tolerate stock price volatility, I think this stock could be a good choice. But if you really want to buy, I suggest only establishing a small position and setting aside funds to add to your position on pullbacks." Despite the significant price increase, Cramer still believes the company's stock is not expensive, currently trading at just over seven times its expected earnings this year. He pointed out, "This company's memory chips can sell at a very high premium, but the stock is currently trading at a discount." Cramer stated that his bullish logic for SK Hynix is mainly based on the expectation that the artificial intelligence investment boom will continue to drive huge demand for memory chips. However, he also cautioned, "Historically, the memory chip industry has always been highly cyclical. Therefore, when supply eventually catches up with demand, investors don't want to be the last ones holding the bag." Currently, SK Hynix's stock price has fallen about 25% from its high on June 25. Cramer said, "This is good news; investors didn't buy at the peak of this stock. But this stock is like a rollercoaster; it can rise rapidly or fall quickly."