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Thunderbolt 3

Thunderbolt 3

Postby shreader » Fri Jul 20, 2018 5:56 pm

A few weeks ago I purchased a Lenovo T480 Laptop it included a Thunderbolt 3 (compatible) port.

USB-C connector (Thunderbolt™ 3 compatible) The USB-C connector on your computer supports both the USB Type-C standard and the Thunderbolt 3 technology. With an appropriate USB-C cable connected, you can use the connector to transfer data, charge your device, or connect your computer to external displays.
The USB-C connector also works as the power connector. Use the shipped USB-C power adapter and power cord to connect the computer to ac power through the USB-C connector.

I checked the specs & more information on Intel Thunderbolt 3, pretty exciting stuff.

So far I have not purchased any additional cables or a hub as finding hardware that runs @ 20Gbps or 40Gbps is difficult or not-available, even a external SSD drive only will read @ around 520Mbps.

Here's how Thunderbolt 3 is different from its predecessors:
•The Mini DisplayPort connection type has been ditched in favor of a USB-C connection type.
•All Thunderbolt 3 cables will work as USB-C cables.
•All USB-C cables will work as Thunderbolt 3 cables as long as they are good quality cables.
•Thunderbolt 3 has a top data transfer speed of 40Gbps as long as the cable is 0.5m (1.6 ft.) or shorter.
•For 1m (3.2 ft.) or longer cables, Thunderbolt 3 supports passive (cheaper) ones that have a top speed of 20Gbps, and active cables (more expensive) that retain the 40Gbps speed.
•Thunderbolt 3 is backward-compatible with earlier versions of Thunderbolt, but due to the new port type, adapters are required to use legacy Thunderbolt devices.
•Any USB-C device (like a Google Pixel) plugged into a Thunderbolt 3 port will function normally.
•Since Thunderbolt 3 devices use discrete Thunderbolt chips to function, they will not function if plugged into a USB-C port.

All versions of Thunderbolt allow for daisy-chaining up to six devices together to a host and in addition to data, can also carry Hi-Def video and audio signals.

https://www.cnet.com/how-to/usb-type-c- ... -them-all/
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Re: Thunderbolt 3

Postby shreader » Sat Nov 24, 2018 3:18 pm

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.
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