Nvidia (NVDA) vs AMD Stock: The Superior AI Chip Investment for 2026

Advanced Micro Devices reached a $1 trillion market capitalization on September 21 after a roughly 187% surge in 2026, while Nvidia was valued at about $5.45 trillion as of September 23. The piece highlights contrasting valuation multiples: AMD’s forward P/E is around 55.6x versus Nvidia’s 18.7x. On performance, Nvidia reported $96.2 billion in quarterly sales with 106% year-over-year growth, compared with AMD’s $11.5 billion and 50% growth. Nvidia’s Vera Rubin is already in mass production and is expected to contribute about 20% of data center sales in the fiscal third quarter, while AMD’s Helios rack system is in deployment, with ramp anticipated in the fourth quarter.