Thunderbolt vs Thunderbolt 2: ATTO’s comparison guide

With Mac Pro finally upon us, you might be wondering just how the new Thunderbolt 2 connection stacks up against regular old Thunderbolt. Luckily, ATTO have been experimenting with Thunderbolt 2 and released their findings in a handy document for you.

The first thing to remember, ATTO say in their comparison guide, is that Thunderbolt 2 doesn’t mean 2x the bandwidth of Thunderbolt. Thunderbolt 2 enables two 20Gbps bi‐direction channels instead of four 10Gbps channels, and performance is limited due to protocol, host and bandwidth capability. ATTO’s key findings are as follows:

– 20Gbps Thunderbolt 2 technology‐enabled devices are backwards compatible with 10Gbps Thunderbolt technology‐enabled hosts. It works!

– Overall aggregate performance for Thunderbolt 2 is the same as Thunderbolt.

– A single Thunderbolt 2 or multiple DP1.1a connections will support 4K video performance.

– Overall storage throughput still depends on the quantity and types of drives that are connected.

– It’s not practical to daisy chain a 4K monitor and high‐speed storage. Independent connections are required!

You can download ATTO’s guide, ‘What is Thunderbolt 2? How does it compare to Thunderbolt?’ here.

Want to know more about Thunderbolt, ATTO solutions and the new Mac Pro? Give us a call on 03332 409 306 or email For all the latest news, follow @Jigsaw24Video on Twitter or ‘Like’ us on Facebook.


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