128k Sequential Read/Write
128k sequential speed reflects the maximum sequential throughput of the SSD. The HGST Ultrastar SSD800MH is in its own league with the highest sequential read speed we have recorded from a single 2.5-inch SSD. It came in at 1,243 MiB/s. The Toshiba PX02SS goes toe-to-toe with the HGST SSD800MM in sequential read speed, with both delivering an average of 1,040 MiB/s and 1,056 MiB/s, respectively.
All three SSDs are very consistent, but the SSD800MH provides the lowest overall latency.
The SSD800MH sets another record with a sustained speed of 779 MiB/s, and the SSD800MM averages 702 MiB/s. The PX02SS scores slightly over its rated speed at 417 MiB/s. It is important to note that the PX02SS is not designed with sequential workloads in mind; its specification for sequential write is 410 MiB/s.
The SSD800MH takes the lead in the 128k mixed workload test.
The SSD800MH averages 9.87 watts, the PX02SS averages 6.08 watts and the SSD800MM requires 8.68 watts for the sequential write workload.
The SSD800MH averages 78.4 MiB/s-per-Watt, the PX02SS averages 88 MiB/s-per-Watt, and the SSD800MM provides 80 MiB/s-per-Watt.