Nicolas Hanson February 14, 2019 Share February 14, 2019 (edited) What is the normal transfer speed on USB 3 from an external disk to an internal disk on a Windows PC? I reach 140 MB/s maximum Edited February 14, 2019 by Nicolas Hanson Link to comment Share on other sites
Jussi Rovanperä February 14, 2019 Share February 14, 2019 Single HD speed is in that range, so that's the bottleneck if you're not using ssd's or Raid's. 1 Link to comment Share on other sites
Bruno Mansi February 14, 2019 Share February 14, 2019 Even with SSDs, you may well find you don't get the maximum speeds you expect from USB 3. There are a number of flavours of USB 3, for example 3.0, 3.1 and 3.1 Gen 2 - all these can effect your transfer rates depending on the drive technology and the compatibility of the interface. As an example I have a HP Zbook studio laptop, which has USB 3 and Thunderbolt 3. When I connect a Samsung SSD T5 (which has a type C connector) to the USB3 port, I'm getting around 450MB/sec read/write. When I connect the same drive to the thunderbolt 3 port I get around 550MB/sec, which is about the limit of the published drive's speed. As a comparison, the internal drive, (which is a M.2 NVMe SSD) is testing 1,600MB/sec write and 3,100MB/sec read. So NVMe is definitely the way to go. I do have a spare M.2 socket inside my laptop, so this is an upgrade I may consider in the future. 1 Link to comment Share on other sites
Filip Zamorsky April 19, 2019 Share April 19, 2019 I keep these charts on my disk 😃 Link to comment Share on other sites
