For much of the artificial intelligence boom, Nvidia Corp.

(NASDAQ:NVDA) has been the stock investors watched to gauge the health of the AI trade.

Jim Cramer thinks that may no longer be enough.

"How did all of tech become hostage to SK Hynix!" the CNBC host wrote on X on Tuesday, highlighting what many investors have come to view SK hynix Inc.

(NASDAQ:SKHY) as one of the AI industry's biggest bottlenecks.