HBM4

High-bandwidth memory has been around for about a decade, and throughout its its continued development it has steadily increased in speed, starting at a data transfer rate from 1 GT/s (the original HBM) and reaching upwards of 9 GT/s with the forthcoming HBM3E. This has made for an impressive jump in bandwidth in less than 10 years, making HBM an important cornerstone for whole new classes of HPC accelerators that have since hit the market. But it's also a pace that's getting harder to sustain as memory transfer rates increase, especially as the underlying physics of DRAM cells have not changed. As a result, for HBM4 the major memory manufacturers behind the spec are planning on making a more substantial change to the high-bandwidth...