US STOCKS-Nasdaq dips as chipmakers slide; S&P 500 treads water with Fed in focus

The tech-laden Nasdaq dipped on Tuesday with chip stocks falling to more than two-week lows, while the benchmark S&P 500 was subdued as focus turned to the Federal Reserve's policy meeting. Investor darling Nvidia fell 1.5% after the company unveiled the Blackwell B200, an AI chip it says is up to 30 times faster than its previous chip.