“…LPDDR at 400 mbps per pin is about 5× off in bandwidth from more modern DDR; but the latency is close, maybe 1.3× off; so for processor cores (like the RISC-V processors described earlier), which are latency-bound, it is reasonable, for accelerators, which are often bandwidth-bound it is less so. Typical server accelerator chips will need PCI-E, which [19].…”