thunderbolt bridge - can you connect a 2017 iMac (Thunderbolt 3 / USB-C) to a Thunderbolt 1 (2012 iMac) and use as a thunderbolt bridge

thunderbolt bridge - can you connect a 2017 iMac (Thunderbolt 3 / USB-C) to a Thunderbolt 1 (2012 iMac) and use as a thunderbolt bridge

Want to add 10G (TB1) network connection using a Thunderbolt bridge, have a 2017 iMac with TB3 and a 2012 iMac with TB1, using the adapter, can I connect the two via a Thunderbolt bridge network.

Follow this Question

1 Answer from the Community

  • Yes, the Apple support document HT207266 "Connect devices and displays with the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter" says you can do that.

    I don't know how fast Thunderbolt networking is in that case. The networking packets might not be allowed to use the full 10 Gbps bandwidth. For example, Thunderbolt 3 can transmit 40 Gbps, but PCIe transmission is maxed out at around 22 Gbps. I don't know if network traffic falls under the PCIe limitation. DisplayPort traffic is separate and can use up to 32 Gbps on Thunderbolt 3. You can read about that in Thunderbolt3_TechBrief_FINAL.pdf at thunderbolttechnology.net

    The macperformanceguide website has a very good review of Thunderbolt networking "Easy Thunderbolt Networking (10 Gigabit)". Those tests used two Thunderbolt 2 Macs to achieve over 1000 MB/s but that occasionally dropped to under 100 MB/s. I guess Thunderbolt 1 would be half as fast. I don't know if Thunderbolt networking has improved in the last two years.

    Was this useful? Answer 1

    0 of 1 people found this useful

Similar Questions

See more Similar Questions