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Old 06-08-2019, 03:14 PM   #9
Liverpool TV
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Join Date: Nov 2013
Location: Liverpool, England.
Posts: 2,887

Originally Posted by BernH View Post
It will only perform better if the actual drive in the housing can provide the bandwidth.

Regardless of the 40Gb/s theoretical limit of the bus, unless the bus can be saturated by the device, you are not running at the maximum speed of the bus.

If the bus is faster than a single device, splitting the bandwidth across multiple devices can allow for bus saturation (ie. RAID-0 configuration with drives)

You have to remember, "a chain is only as strong as it's weakest link" In this case the single SSD speed is the weakest link. To saturate 40Gb/s you would need a much faster drive than is currently available, or an array of multiple drives.
Thank you Bern.

And by extension, and as you've pointed out, a single SATA 3 SSD won't saturate the USB-C bus. Therefore no gain what so ever in using USB 4 or any other transport/bus system with a higher bit rate/bandwidth beyond that of the storage medium.

Plus. My example is something that can be done right now and not waiting for a new USB standard that won't make any difference to this example and will require at the very least the expense of a new interface card, although likely a new M/B and whatever else will be needed, enclosures etc.

Honestly, this example was for Edius users interested in such things and it's a proper real world example. Why do some people feel the need to attack a thread, especially when they are obviously ignorant to the technology being used ?

Anyway, thanks again Bern.

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