When benching the drive with ATTO, it does not manage to turn any heads right away, but it keeps getting faster and faster. Kingston advertises up to 225 MB/s read and 135 MB/s write performance and the DataTraveler HyperX meets both of those numbers. With 227 MB/s read and 133 MB/s write in ATTO, you will get what is advertised. HDTach gives some additional insight into its overall performance with read performance being a steady line well above 220 MB/s and write speed repeating a very interesting pattern. It does reach the same maximum transfer rate as in ATTO, but the average only sits at an excellent 106 MB/s due to the span between maximum and minimum speeds.
When utilizing the aging USB 2.0 interface, Kingston advertises 30 MB/s read and write performance, and the DataTraveler HyperX hits the write mark and even surpasses 30 MB/s read in ATTO. HDTach paints a similar picture with the drive staying above the 30 MB/s read mark and, due to ups and downs, an average of 27.5 MB/s write, which is still an excellent number for the old standard.