Nvidia vs. SK Hynix: Which AI Chip Stock Is a Better Buy for 2027?

As the demand for advanced computing hardware continues to accelerate, investors are closely watching the leaders of the hardware revolution. Choosing between Nvidia Corp. (NASDAQ:NVDA) and SK Hynix (NASDAQ:SKHY) involves weighing different parts of the tech stack.

Nvidia provides the processing power that runs modern data centers, while SK Hynix supplies the specialized memory those processors require to function. Both companies are vital to the infrastructure of tomorrow, making them frequent subjects of comparison for long-term investors.

The case for Nvidia

Nvidia is the clear leader in GPU-accelerated computing, offering a suite of products for data centers, gaming, and the automotive industry. It is a central figure among semiconductor stocks because its hardware and software are foundational to modern computing. However, investors should note that the company has significant customer concentration, with one direct customer representing roughly 22% and another nearly 14% of revenue. Customer concentration like this adds a layer of risk to the business.

In the fiscal year ended Jan. 25, 2026, revenue reached around $215.9 billion, representing growth of approximately 65.5% compared with the prior fiscal year. This massive increase in sales drove net income to roughly $120.1 billion during the same period. The company maintained a strong net margin of approximately 55.6%, indicating its ability to translate high demand into significant bottom-line results.

As of its January 2026 balance sheet, the debt-to-equity ratio was roughly 0.1x, indicating that total debt is very low relative to shareholders' equity. The current ratio, which measures the ability to pay short-term obligations with short-term assets, stood at approximately 3.9x. Free cash flow for the fiscal year ended Jan. 25, 2026, was about $96.7 billion, showing the company generates substantial cash after accounting for capital expenditures.

The case for SK Hynix

SK Hynix focuses on being a premier provider of memory solutions, describing itself as a full-stack creator of AI-ready hardware. Its product lineup includes DRAM and NAND flash, which are critical for high-performance computing and data storage. By positioning itself as a key supplier for the most demanding technical environments, the company has become an indispensable partner for major technology manufacturers around the world.

In the fiscal year ended Dec. 31, 2025, the company reported revenue of about $72.6 billion, a growth rate of around 46.8% over the previous year. This performance resulted in net income of approximately $32.1 billion for the same fiscal period. The company achieved a net margin of roughly 44.2%, which reflects a significant improvement in profitability as demand for memory chips strengthened.

According to its December 2025 balance sheet, the debt-to-equity ratio was approximately 0.2x, indicating that total debt remains manageable compared to shareholder equity. Its current ratio was roughly 1.9x, suggesting the company is well-positioned to meet its short-term financial commitments. Free cash flow, which is the cash remaining after capital expenditures are deducted from operating cash flow, reached around $18.5 billion in the fiscal year ended Dec. 31, 2025.

Risk profile comparison

Nvidia faces intense competition from large technology firms like Amazon.com Inc. (NASDAQ:AMZN) and Microsoft Corp. (NASDAQ:MSFT), both of which are developing internal silicon solutions to reduce reliance on third-party chips. The company also relies heavily on external manufacturing partners for its production, which can create supply chain vulnerabilities. Shifting global export controls and ongoing legal scrutiny regarding its business practices and disclosures represent additional risks to its long-term outlook.

SK Hynix operates in the notoriously cyclical memory market, where fluctuations in global supply and demand can lead to volatile pricing for its core products. It faces stiff competition from other global memory manufacturers that could impact its market share or pricing power. Because the company must invest heavily in manufacturing capacity to stay ahead, any unexpected downturn in hardware demand could lead to inventory challenges or lower profitability.

Valuation comparison

SK Hynix carries a significantly lower valuation than Nvidia based on its much lower Forward P/E and P/S ratio metrics.

Valuation metrics include those sourced from Financial Modeling Prep (FMP) and may differ from those of other data providers.

The Forward P/E measures the stock price against future earnings estimates for the next twelve months. The P/S ratio compares the market value of the company to its sales over the past twelve months.

Which stock would I buy for 2027?

SK Hynix is a play right now on the continuing AI explosion. Its role as a leading supplier of Nvidia means it is riding the wave of demand that the customer is seeing. Second-quarter revenue surged an astonishing 257% (and 51% sequentially from the first quarter) and then leaped an even greater 325% in the recently reported third quarter. Expanding demand and tight supplies of memory products mean SK Hynix can sell all it produces and pass through higher prices. The company keeps expanding its capacity to meet demand, though by management accounts, it is close to insatiable at the moment. That does bring the risk that if AI investment slows, the business could find itself with excess capacity and eroding pricing leverage.

Nvidia, meanwhile, has turned its long-held business of creating high-powered chips for video game systems into perhaps the most coveted supply of chips for AI data center applications. Founder and CEO Jen-Hsun Huang recently used a five-layer cake metaphor to describe AI, encompassing energy, chips, infrastructure, models, and applications. He sees Nvidia as coordinating all those layers, keeping the company as a central player in the AI boom. But will he be around to guide the company? The executive has recently been accused of having an affair with a woman who is believed to be a spy for China. That could lead to the U.S. federal government imposing export restrictions on Nvidia's chips, which Huang lobbied the White House to allow.

In the second quarter of fiscal 2027, Nvidia sales more than doubled year over year to $96.7 billion, with net income of about $60 billion, also more than double the prior year.

These are both closely linked stocks, given that Nvidia is supplied by SK Hynix. That means their fates are somewhat intertwined. SK Hynix shares come at a far cheaper P/E and P/S ratio than Nvidia, making it the more sensible choice to play the AI chip boom.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Amazon, Microsoft, and Nvidia. The Motley Fool has a disclosure policy.