In our throughput tests, we couldn't hit the official maximum read speed of 1,050MB/s, but the peak read/write results of 904.03MB/s and 922.92MB/s (both at the 4MB block mark) respectively are nevertheless very impressive for an external drive.
The X8 is a very quick external drive when it comes to read performance, trailing only slightly behind the fastest USB powered we've tested to date, Samsung's T7 Touch at the end of the test.
When it comes to write performance, the X8 is the fastest USB drive we've tested to date, peaking at 922MB/s (4MB block) before dropping back to finish the test run at 905MB/s.