The main advantage is reflected in low latency.There are two main reasons.
1.On the one hand, it is the advantage of hardware architecture.The PCIE SSD is a PCIE device and is directly attached to the CPU. This reduces the overhead between the SAS controller and the SSD disk.
2.On the other hand, it is the advantage of protocol.NVME protocol is more streamlined and has less overhead than SAS protocol.
