NVIDIA Grace

NVIDIA's answer to a problem it created. Once the GPU became the machine, the host CPU's remaining job was to move data to it, and every generation of PCIe made that link the bottleneck. Grace exists so NVIDIA can put its own CPU on the same board as its own GPU with a 900 GB/s coherent link between them, which no third-party CPU can offer. Choosing LPDDR5X rather than DDR5 is the other half: lower power and higher bandwidth per watt, at the cost of being soldered down and non-upgradable. A system that buys Grace has bought NVIDIA's CPU, GPU, interconnect and memory decision in a single purchase order.