Random IO

Random read/write performance matters if you copy a lot of small files or use the drive as storage for games/applications that are directly started off the drive.

Sequential IO

Sequential performance is relevant when you copy large files—videos, for example.

Sustained Write Speeds

Sequential write speeds stayed high for the whole duration of our test, which is a great result. Other drives write a certain amount of data at full speed while filling up the SLC cache, and then slow down significantly as soon as the buffer is full and gets flushed to TLC. If you look closely at the graph, you can see a change in write rates at around 333 GB (one-third the capacity of the SE760). Write rates do fluctuate a bit from there on out, but it's nothing drastic.