Kingston rate the Sequential performance of the 2TB XS2000 as up to 2,000MB/s for both read and writes. In our throughput tests, the drive didn't quite hit those official maximums with a tested best read figure of 1,873.47MB/s with writes at 1,752MB/s.
In the read throughput test, the drive peaked at the 4MB block mark at 1,873.47MB/s before dropping back slightly to finish the test run at 1,851.02MB/s. Although the peak and finishing figures are shy of the official read figure, the drives peak performance figure and finally test result make it the fastest USB external drive we've seen to date in terms of read performance.
In the write throughput test, the Kingston XS2000 peaked at the end of the test run (16MB block) at 1,753.37MB/s.