(Updated at 7:02 a.m. ET/1102 GMT)

By Johann M Cherian and Purvi Agarwal

Sept 26 (Reuters) - U.S. stock index futures climbed on Thursday after Micron's upbeat forecast revived the euphoria around artificial intelligence on Wall Street, while investors also awaited economic data and remarks from Federal Reserve Chair Jerome Powell.

Micron Technology jumped 14.7% in premarket trading after the memory chip maker forecast higher-than-expected first-quarter revenue, underscoring that demand for memory chips used in AI computing was robust.

The optimism lifted other chip stocks, with Nvidia rising 1.8%, Advanced Micro Devices advancing 2.2% and Broadcom adding 1.7%.

Semiconductor equipment companies such as Applied Materials and KLA Corp also jumped 5.4% and 4.5% respectively.