Battle for Bandwidth: Samsung and AMD Strike HBM4 Supply Pact

The inference speed of neural networks currently hits a bottleneck not in logical cores, but in memory bandwidth (the memory wall). On March 18, 2026, Samsung Electronics and AMD signed a strategic memorandum of understanding (MOU) to secure supplies of next-generation HBM4 memory.

The agreement goes beyond simply shipping memory chips. The companies will jointly explore foundry contract manufacturing capabilities to create custom AI accelerators where HBM4 layers are integrated directly onto the compute die using 3D packaging. For AMD, this is a critical step: securing a reliable supply channel for high-speed memory is the only way not to lose to NVIDIA in the race for data centers. Samsung, in turn, guarantees itself an anchor customer for years to come in the face of fierce competition with SK Hynix.

Source: Reuters