Okay, I'll play. My test is with 56 RAW files (about 19-21MB each) totaling 1.08GB. I'm copying from the card reader(s) to an SSD drive. In Windows Explorer USB 2: 1 minute 4 seconds USB 3: 16.5 seconds In Lightroom USB 2: 1 minutes 5 seconds USB 3: 19.8 seconds