What can utilize a USB3.1 port? what are you using it for?

[dgsddfgdfhgs]

looking at speed of 10Gbps, I wonder what should I do with it? 

storage drive? how large and how fast should it be.... not cost efficient...

 

what is the purpose of the USB3.1 and what could really take advantage of it?

(I remembered I had a usd3.0 mobo 6 years ago, died and didnt have any usb3.0 devices lol)

[emosun]

well much like usb 3 nothing is really going to hit the theoretical max limit of 10gbps , but even if it did that's only 1.25 gigabyte per second so it'll still take a while to move say a whole hdd over the connection.

[Mholes]

External M.2 RAID

[voiha]

It's more of if you have a 3.1 device that can utilize it somehow (external HDD,USB etc)
Most of the times mouses can have problems if you place them on 3.1 rather than 2.0. That's why even 2018 laptop/pc models has 2.0 port

 

[emosun]

1 minute ago, voiha said:

mouses

 

[mariushm]

One use could be capture cards (frame grabbers) that grab 4K 4:2:2 or full rgb/YCbCr 10bit at 60 fps, or resolutions higher than 4K... raw frames, most capture cards use hardware h264 or mpeg2 encoders to compress frames before sending them to the pc

 

Devices like epiphan av.io-4k usb frame grabber  record 4K 4:2:0 30fps and that needs around 3.5-4 gbps sustained : https://www.epiphan.com/products/avio-4k/tech-specs/

 

[voiha]

@emosun huh ?

[dgsddfgdfhgs]

8 minutes ago, mariushm said:

Devices like epiphan av.io-4k usb frame grabber  record 4K 4:2:0 30fps and that needs around 3.5-4 gbps sustained : https://www.epiphan.com/products/avio-4k/tech-specs/

 

not familiar with capture cards, but on its web, looks like usb3.0 is already sufficient for 4k 

[mariushm]

A 4K Full RGB image would be:   3840 x 2160 x 3 bytes per pixel = 24,883,200 bytes

30 fps would be 30 x 24,883,200 = 746,496,000 bytes - in bits, that's 5,971,968,000 bits

 

USB 3.1 encodes data going through the cables in 128b/132b - for every 128bits of actual data, 132 bits are sent.

 

So to send 30 frames of 4K full rgb image you need 5,971,968,000 / 128 x 132 = 6,158,592,000  or 6.1 gbps

 

That capture card from epiphan can capture 4K at 30fps because it captures in YCbCr 4:2:0 mode - this mean it takes groups of 4 pixels and computes an average of color information for these 4 pixels and sends the average instead of the color info for each of the 4 pixels. So instead of sending 4 pixels x 3 bytes = 12 bytes, it sends  4 x Y + 1 x Cb + 1 x Cr = 6 bytes.  (or something like that, i may be a bit wrong here)

 

So ... 3840 x 2160 / 4 pixels in a group x 6 bytes per group of 4 pixels x 30 fps = 12,441,600 x 30 = 373,248,000  or 2,985,984,000 bits  ... with 128b/132b encoding that's 3,079,296,000 bits for video alone , or ~3.1 gbps

 

Add 0.1 gbps for audio, and around 0.2 gbps in overhead and other stuff, and you have a capture card that uses around 3.5 gbps sustained to transfer raw 4K 30fps 4:2:0

 

If you want to capture 10bit per color, that raises the amount of bits by around 20% ... if you want to capture 4:4:4 or 4:2:2 instead of 4:2:0 (which can be bad for text and flat stuff like windows applications) than you need more bandwidth.

 

Like I said, amateur and amateur+ capture cards use hardware encoders to perform lossy compression, taking such 4K capture down to around 200 mbps - but sometimes you want raw frames, perfectly crystal clear without compression artefacts.

[Arika]

My entire flight rig is run of a single 3.1 port split into 7 devices using a powered hub

[Automobili3XF]

Mine is not doing much now, but i'm thinking about getting a new USB hub that is compatible with it.

[Pixel5]

my usb 3.1 ports are working great for collecting dust as they have no real world usage right now for me.

[Syntaxvgm]

My keyboard 

[Tog Driver]

9 hours ago, emosun said:

 

Maus'

[ElZamo92]

I use it for my Samsung T5 and nothing else. 

[Curufinwe_wins]

Even a 4 way raid-0 of HDDs wouldn't manage to saturate a USB 3.1 10Gbps port. Yeah. 

[Pixel5]

4 hours ago, Jon1764 said:

I bought this Mediasonic 4-bay drive enclosure: https://www.amazon.ca/Mediasonic-SATA-Hard-Drive-Enclosure/dp/B078YQHWYW

I specifically spent $30 more for the USB 3.1 variant mainly for future proofing, and for the possibility of getting a higher transfer speed.

I had an unused USB 3.1 port, so I might as well use it.

this would be a viable thing to have if companies like synology would include the port on their NAS