Since I am lacking on something to test on my Lenovo T480 Laptop (PCI Express Gen3 x4) w/ a Thunderbolt 3 (compatible) port.
Not wanting to spend money on something I wouldn’t use much I decided on a Samsung 970 EVO M.2 SSD & 10Gbps USB 3.1 (Gen 2) to M.2 NVME SSD Enclosure
w/ a JMicron
USB 3.1 Gen 2 to PCIe Gen3x2 Bridge Controller (JMS583)
The enclosure comes w/ a Type C to Type C cable for the Thunderbolt 3 connection.Now the results:
Spec speed of M.2 SSD is 2,800 MB/s
Actual speed of above setup was: 626 MB/s
*Comments: Although the actual speed I am getting is definitely faster than a SATA 3 Samsung SSD 860 plugged into the Same Thunderbolt 3 port (401 MB/s) I was not overly excited w/ these testing results. The speed is NTL respectable.