The gap between how Wall Street values Nvidia and rival AMD is widening, and the reason comes down to a single force: the seemingly unstoppable demand for AI chips.

According to 24/7 Wall St., investors are now openly asking whether Nvidia is undervalued, AMD is overvalued, or both are true at once. It's an unusual framing, because Nvidia already trades at an enormous market value. The point is that its business is growing so fast that even a huge price can look cheap relative to what the company earns — while AMD's stock may be pricing in growth it has yet to deliver.

24/7 Wall St. describes the backdrop as a technology industry being reshaped "at a pace few expected." What started as a race to build faster AI chips, the outlet notes, has grown into a massive infrastructure buildout — the data centers, servers and hardware needed to run artificial intelligence at scale.

That buildout is straining supply. According to TechStock², Nvidia's valuation gap grew after what it called a "$119 billion supply test" that pressured investors who typically buy the stock on dips. In other words, the sheer scale of demand and spending is testing whether the market's enthusiasm can hold.

The two companies are the leading makers of the graphics-processing chips that power AI systems, which is why comparing them has become a proxy for how investors feel about the entire AI trade.

Why it matters: Nvidia and AMD sit at the center of the AI economy, so how the market judges their relative worth is a signal of whether the AI boom is still accelerating or starting to look overpriced.