Nvidia's demand is too hot? SK Hynix: Huang Renxun requests HBM4 chip to be delivered 6 months in advance SK Hynix Chairman Choi Tae won said on Monday that Nvidia CEO Huang Renxun has requested him to advance the supply time of the company's next-generation high bandwidth memory chip HBM4 by six months. He stated at the Group AI Summit held in Seoul that SK Hynix is collaborating with Nvidia to address supply bottlenecks.