Thunderbolt vs. USB 3.0



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SATA disk drives are limited to 6 GB/s.

Does anybody really need to have 10 GB/s or care about it?

And if so - who? At 10 GB/s you can move 1 TB in 100 seconds, if only your drive could keep up with it..



SATA III is not 6GB/s, it is limited to 6Gb/s (0.75 GB/s), there's an 8 fold difference between bits and bytes. Also, that theoretical limit is only per-drive; This article is not about connecting single drives, it is about connecting arrays of drives, in the case of RAID 0, as was tested in this article, non-redundant arrays. At the theoretical limit of 10Gb/s, Thunderbolt would transfer 1TB in 800 seconds (13 minutes 20 seconds). This is unnecessarily fast if you're tranferring digital photos from your phone, or songs from your MP3 library, but if you're transferring lossless 3D stacks of 10k resolution digital images (such as some science professionals may work with) then you're still in for a very long day. As I look at my 2 arrays of 8x4TB disks each (64TB total) that are nearly full of data sitting next to my monitor, I recognize that the interface through which I read and write that data does matter. Still, you are correct; for most people the interface is not the bottleneck.

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