AMD MI450 launch ignites AI chip war, US semiconductor sector surges across the board

On the morning of August 1, US time, the US semiconductor sector experienced a "major shock". Chip giant AMD (AMD)重磅 released its next-generation AI accelerator MI450 after hours, with its doubled performance improvement and aggressive pricing strategy directly targeting the "throne" of industry leader NVIDIA. As soon as the news came out, market sentiment was instantly ignited, and AMD's stock price surged 12.3% in a single day, closing at $186.4, marking the largest single-day increase in nearly two years. At the same time, the entire AI computing industry chain collectively boiled over, with the Philadelphia Semiconductor Index rising 4.2% to a new high.

AMD MI450 makes a stunning debut, directly challenging NVIDIA's dominance

According to information released by AMD, MI450 uses an advanced 3nm process technology, equipped with its self-developed CDNA 5 architecture, with a computing power of 1.8 exaflops under FP8 precision, exactly double that of the previous generation MI350. More importantly, its single-card price is only $28,000, 20% lower than NVIDIA's flagship product H200 at $35,000, with extremely prominent cost-performance advantages. AMD CEO Su Zifeng confidently stated at the launch: "MI450 is not only a performance monster, but also a redefinition of AI computing costs."

Industry insiders pointed out that AMD's timing for this release was quite clever. Just a week ago, NVIDIA had just announced that its next-generation Blackwell Ultra chip would be delayed due to yield issues, which gave AMD an excellent "time window." The market generally believes that the launch of MI450 will effectively fill the supply gap of NVIDIA's high-end products and quickly tear open a gap in the cloud training and inference market.

Chip stocks surge across the board, capital crazily flows in

AMD's strong performance quickly radiated to the entire semiconductor industry chain. On the August 1st market, although NVIDIA fell 2.5%, it did not drag down the sector's positive atmosphere; foundry giants TSMC and Samsung Electronics rose 3.1% and 2.4% respectively; memory chip makers Micron Technology, Applied Materials, KLA, etc. all recorded gains of over 4%. Finally, the Philadelphia Semiconductor Index closed above 5,800 points, setting a new high, with a combined market value increase of over $300 billion in a single day.

Capital flow data also confirms market enthusiasm. According to Bloomberg statistics, on August 1, net inflows into the US semiconductor sector reached $8.7 billion, setting a 12-month high. Notably, capital from Southeast Asia was particularly active, with ETF subscription volumes in Singapore, Malaysia, and Thailand significantly increasing, reflecting strong regional investor confidence in long-term AI computing demand. Taiyuan Wealth analysts believe this is closely related to Southeast Asian countries accelerating the construction of data center and digital economy infrastructure, and as the underlying cornerstone, AI chips have naturally become the focus of capital competition.

Industry transformation: AI computing market heading for "duopoly era"

In the past few years, NVIDIA has dominated the AI accelerator market with a market share of over 80%, while AMD's pursuit has always been difficult. However, the launch of MI450 is changing this landscape. According to the latest report from semiconductor research firm TechInsights, AMD's market share in the AI accelerator market increased from 8% in 2024 to 15% in 2025, and the launch of MI450 is expected to further push this number to 25% by the end of 2026. This means that the narrative of the AI computing market has shifted from "monopoly" to "duopoly," and the bargaining power of upstream wafer foundries, packaging manufacturers, and memory suppliers has also increased.

"NVIDIA's long-term monopoly is not unshakable." Matt Bryson, senior analyst at Wedbush Securities, commented: "When the performance gap narrows to within 20% and the price advantage reaches over 20%, cloud service providers and large enterprises will certainly not ignore AMD's temptation. In the next 18 months, the pattern of AI hardware procurement will undergo drastic changes."

Implications for investors

From a technical perspective, AMD's stock price has broken through the annual line pressure, with the MACD indicator forming a golden cross, showing strong short-term upward momentum. However, investors need to be alert to the risk of short-term pullback after the good news is realized. For funds concerned about sector rotation, semiconductor industry segments such as equipment, materials, and storage, as well as cloud computing and IDC sectors benefiting from computing demand growth, are worth including in observation.

Taiyuan Wealth suggests that when allocating US tech stocks, Southeast Asian investors should not be overly obsessed with the undecided "chip duopoly," but should diversify through industry ETFs such as the Philadelphia Semiconductor Index ETF (SOXX) and the overall tech sector ETF (XLK) to capture the beta returns of the entire AI computing wave. At the same time, attention should be paid to Federal Reserve policy trends and the impact of geopolitical factors on chip export controls, and positions should be adjusted in a timely manner.

In summary, the launch of AMD MI450 is not just a product iteration, but a redistribution of market power. As AI applications accelerate, the long-term trend of computing demand remains established, and the "golden age" of the US semiconductor sector may just be beginning.