Question USB 3 vs USB 3.1

[onespeedbiker]

I recently posted that when running Windows 10 from a USB, I got better results from a USB 3.1 over a USB 3.0. However I am now a bit confused. From what I have read, what was USB 3.0, is now windows 3.1 Gen 1 and what was USB 3.1 is now USB 3.1 Gen 2.

The USBs I am using are a Sandisk Ultimate 3.0 vs a SanDisk Extreme Go USB 3.1 USB). It would seem since both have a blue insert they are the same. However, using the old nomenclature, why am I getting better results from a USB 3.1, than a USB 3.0 plugged into a USB 3.0 port?

 

[laptop-Tech]

faster usb hardware frome MBD

 

[Sohom]

I recently posted that when running Windows 10 from a USB, I got better results from a USB 3.1 over a USB 3.0. However I am now a bit confused. From what I have read, what was USB 3.0, is now windows 3.1 Gen 1 and what was USB 3.1 is now USB 3.1 Gen 2.

The USBs I am using are a Sandisk Ultimate 3.0 vs a SanDisk Extreme Go USB 3.1 USB). It would seem since both have a blue insert they are the same. However, using the old nomenclature, why am I getting better results from a USB 3.1, than a USB 3.0 plugged into a USB 3.0 port?

Thats actually a good question... i too saw the same speed difference... i was using hp 32 gb usb 3.0 drive and i got better speeds when connected to usb 3.1 hub... hope someone here has the answer to this... as far as i know a usb 2.0 will not have any speed difference when connected to usb 3 port and so it shud stand true for usb 3.0 devices but it seems speeds increase when connected to USB 3.1 port...

 

[onespeedbiker]

faster usb hardware frome MBD

What?

 

[laptop-Tech]

MotherBoard

 

[onespeedbiker]

Thats actually a good question... i too saw the same speed difference... i was using hp 32 gb usb 3.0 drive and i got better speeds when connected to usb 3.1 hub... hope someone here has the answer to this... as far as i know a usb 2.0 will not have any speed difference when connected to usb 3 port and so it shud stand true for usb 3.0 devices but it seems speeds increase when connected to USB 3.1 port...

Okay, that is even stranger. I am using a 3.1 USB in 3.0 port, while you are using a 3.0 USB in a 3.1 hub; yet in bother cases there was an increase in speed.

 

[laptop-Tech]

Okay, that is even stranger. I am using a 3.1 USB in 3.0 port, while you are using a 3.0 USB in a 3.1 hub; yet in bother cases there was an increase in speed.

Now you have confused me.

 

[onespeedbiker]

MotherBoard

So you are saying, even though my MB has 3.0 ports, it is capable of greater speeds thru the same port with a faster USB (10mg/s vs 5 mb/s).

 

[laptop-Tech]

should be

 

[onespeedbiker]

Now you have confused me.

I was commenting on Sohom post

Thats actually a good question... i too saw the same speed difference... i was using hp 32 gb usb 3.0 drive and i got better speeds when connected to usb 3.1 hub..

 

[laptop-Tech]

I was commenting on Sohom post

Now Im Very Confused??????????????????????

 

[onespeedbiker]

Thought I'd throw in what I've learned. First the USB max rate is up to 5gbps (640MBps) , but early USB 3 flash drives are not nearly that fast. The Sandisk Ultra 3.0 transfer speed is only 100MPps. The first model Sandisk Extreme Go 3.1 GEN 1 (SDCZ800 ), I am using to run Windows 10, has max transfer rates of 200MBps read and 150MBps write. The newer Sandisk Extreme Go 3.1 GEN 1 model SDCZ880 max transfer rates are 420MBps and 380MBps write. This means there is likely a newer model in the works that will have transfer rates even faster. I ordered a Sandisk Extreme Go 3.1 GEN 1 (SDCZ880) and will be loading Windows 10 on it to see what improvement there hopefully will be over the model SDCZ800.

 

[Maxxify]

USB 3.2 Gen 1x1 is 5 Gbps with 8b/10b encoding, Gen 1x2 is 10 Gbps with 8b/10b encoding, 2x1 is 10 Gbps with 128b/132b encoding, 2x2 is 20 Gbps with 128b/132b encoding. After overhead this comes out to about 460 MB/s, 920 MB/s, 1120 MBs, 2230 MB/s, respectively. If you also count Thunderbolt 3 the maximum is 22 Gbps for data but this is after encoding and overhead, so 2.75 GB/s.

 

[onespeedbiker]

Okay, I loaded Windows 10 on the Sandisk Extreme Go 3.1 GEN 1 (SDCZ880) max transfer rates are 420MBps and 380MBps write. The end result was not much noticeable speed increase over the slower SDCZ800, however moving files back and forth between USBs was very fast.