Samsung Electronics and Advanced Micro Devices (AMD) signed a memorandum of understanding to expand their strategic partnership on memory chip supplies for artificial intelligence infrastructure, the companies said on Wednesday. The agreement will focus on supplying Samsung's next-generation high-bandwidth memory (HBM4) for AMD's upcoming Instinct MI455X AI accelerators, as well as optimised DDR5 memory for AMD's sixth-generation EPYC processors, they said in a statement.