HBM DRAM通过分布式接口与主机计算芯片紧密耦合。界面是 分成独立的渠道。每个通道彼此完全独立。频道是 不一定是同步的。HBM DRAM使用广泛的接口架构来实现 高速、低功耗运行。每个通道接口都保持一条128位数据总线，以双倍速度运行 数据速率（DDR）。

The HBM DRAM is tightly coupled to the host compute die with a distributed interface. The interface is divided into independent channels. Each channel is completely independent of one another. Channels are not necessarily synchronous to each other. The HBM DRAM uses a wide-interface architecture to achieve high-speed, low power operation. Each channel interface maintains a 128 bit data bus operating at double data rate (DDR).