iHBM is SK hynix’s concept for High Bandwidth Memory with cooling integrated inside the memory package. Instead of relying only on board-level heatsinks and airflow, the package is designed to move heat away from dense stacked DRAM from within the stack itself.
This matters because HBM is used in AI servers and other high-performance systems where heat can cause throttling, instability, or reduced lifespan. In security-sensitive environments, that can weaken availability and performance for workloads such as analytics, inference, and cryptography. Defenders care about iHBM-style designs because better thermal control can improve sustained throughput, while monitoring package temperature and throttling behavior helps spot overload or weak cooling. In attack scenarios, sustained resource exhaustion can push hardware into thermal limits, turning heat into an availability risk.