The performance was middle of the road for a single device, and I'm still puzzled with the result, even after testing it multiple times, but this device does excel with multiple drives with really no loss in performance. Adding to this with Sonnet optimizing the card's power consumption, we no longer need external power like many cards do, enabling this to be used with many external Thunderbolt chassis. This will be especially important for creative professionals or enthusiasts that need every bit of performance they can get. Where the Sonnet makes up for its MSRP is in quality, and that starts with its four ports of connectivity all having their own controller. As it sits right now, there are a plethora of cards that hover around the $30 to $50 mark and offer four ports. The Allegro Pro is an expensive piece of kit when it comes to USB 3.0 expansion cards. As you can see above, each of the drives was able to hit over 200 MB/s with the HyperX hitting 290 MB/s read. To take testing a bit further, I set up four USB 3.0 flash drives each with their own port and hit go.
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