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So what do you think about USB 3.0 ??....and is it always necessary?

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Gray_Area:
To elaborate on the second question: the average american net user gets probably 10mbp internet service. Yet USB 2.0's 480mbp ain't enough for video streaming? This suggests to me an OS resource allocation problem.

Regardless, many of you know more than I do, so what's your answers?

SavannahLion:
Well.... I'm not sure what you're getting at. USB isn't just used for video streaming you know. Neither is the internet.

And I could be wrong, but I'm not aware of any monitors that directly support a video stream from USB so.....

AFAIK, USB3.0 maximum speed limits aren't in consumer level products anyways. So it might be a while before we start hitting 3.0's speed limits there.

CheffoJeffo:

--- Quote from: Gray_Area on September 05, 2012, 07:35:50 pm ---To elaborate on the second question: the average american net user gets probably 10mbp internet service. Yet USB 2.0's 480mbp ain't enough for video streaming? This suggests to me an OS resource allocation problem.

Regardless, many of you know more than I do, so what's your answers?

--- End quote ---

I know that trying to derive anything based on the max spec of a device on one end, then ignoring everything in between is just silly.

But, FWIW, I am, while I type this, streaming HD rather nicely from an external drive attached to my notebook via USB 2, then streamed over N wireless to my iPad in the kitchen and not having any problem at all.

Howard_Casto:
I think you are a bit confused man.  USB 2.0 is more than sufficent for video streaming and I've never heard anyone say different.  Perhaps you are referring to usb monitors?  Because the bottle neck there is the system, not usb.  Without proper hardware acceleration, any software-based usb video card is going to be slow as dirt. 

usb 2.0 was added because of harddrive speeds and nothing more.  2.0 is still too slow to keep up with the transfer rate of your typical sata drive, thus the need for 3.0. 

So to simplify, anything higher than 1.1 was added due to harddrive transfer rates.  This effects file access/transfer times and NOT things as trivial as streaming speeds.  Video streaming is buffered in ram you know.  ;)


Now taking all of that aside, you've also got to remember that usb speeds are totall throughput.  If you start adding usb hubs into the mix, the max speed you get slows down.  Mind you it isn't anything as dramatic as a 4 port hub cutting the speed to 25% per device, but it is noticable.

shmokes:
What if, instead of streaming a movie, I want to copy a 30 GB Bluray rip from my computer to an external drive. Or maybe I want to back up my 100 GB music collection or 2 TB video collection. Minutes vs. hours. Is USB 3.0 necessary?

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