Data Transfer Latency

A PCIe Gen5 x4 interface provides a theoretical maximum physical bandwidth of 16 GB/s. However, due to packet headers, protocol overhead, and software interrupts, the interface sustains an effective efficiency of exactly 75%. How many seconds will it take to continuously transfer a 1.2 Terabyte (TB) machine learning weights file from the host CPU to an Edge AI accelerator's local memory? (Assume 1 TB = 1000 GB).