We tested the USB 3.0 performance on the Dell system with the 64GB Kingston HyperX Max 3.0 flash drive.
Reasonably strong performance there for the controller, especially when it comes to write speed which is able to almost keep pace with the read score.
ATTO results were similar, though showed much improved write performance at lower file sizes. Read speed was a little faster here too, achieving around 270MBps consistently.
This Dell XPS is so cool