By Heekyong Yang and Hyunjoo Jin SEOUL (Reuters) -Samsung Electronics said on Friday it is in "close discussion" to supply its next-generation high-bandwidth memory (HBM) chips, or HBM4, to Nvidia, as the South Korean chipmaker scrambles to catch up with rivals in the AI chip race. Samsung, which plans to market the new chip next year, did not specify when it aims to ship the latest version of its HBM chip, a key building block of artificial intelligence chipsets. Local rival SK Hynix, Nvidia's top HBM chip supplier, on Wednesday said it aims to start shipping its latest HBM4 chips in the fourth quarter and expand sales next year. Nvidia, in a statement announcing cooperation with Samsung and other Korean companies, said it is in "key supply collaboration for HBM3E and HBM4", without elabo

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