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.
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