USB 3.0 faster than HDD?

[somawhees]

I was thinking of buying the SANDISK 32GB SDCZ80 EXTREME USB 3.0 USB stick
http://www.memorycow.co.uk/sandisk-32gb-extreme-usb-3-0-memory-stick-flash-drive-sale

Will it be faster the 5400 rpm seagate SSHD I've got; It transfers data about 110MB/s whereas the usb transfers data up to 245 MB/s (it says).
I also think it will consume less power than the SSHD.

Are my assumptions correct?

 

[kanewolf]

For READs it should be based on the specs.

 

[WyomingKnott]

I can't answer for that particular USB device. The principal is sound; I've got a USB stick here at work that I sometimes do project builds on instead of my internal HDD. Cuts about a third of the time off the automated testing project.

 

[somawhees]

and what about power consumption, the usb uses an SSD controler apparently.

"Design is GREAT! Speed is very fast. I checked it and tear it down. What I found inside is SSD Controller... That's mean , We got a USB SSD!"

 

[popatim]

Yes the sequential speed is fast; up to 240mb/s read and write at about 100mb/s
Its 4k randowm results are much worse with reads at about 11mb/s and writes coming in at around 9.

Please dont forget that USB3 would add extra latency that wouldn't be there compared to a sata ssd and that you need to have usb3 ports in your pc to see these speeds.

 

[somawhees]

Its 4k randowm results are much worse with reads at about 11mb/s and writes coming in at around 9.

I don't understand what that means, please explain to a noob like me in more noob friendly language.

On the subject of latency, do you mean in ms? because it will only be a bit higher latency than an internal
hard drive, nothing to worry about if Ime planning to use the usb for storing and accessing gamefiles right?
i also thought it would be better for video editing than my hdd

 

[somawhees]

will the best read speed usb be the CORSAIR Flash Voyager GT 32GB USB 3.0 then?
http://www.tomshardware.com/reviews/usb-3.0-thumb-drive-review,3477-3.html

 

[popatim]

Random reads and writes occur when the system needs data thats in various position over the platters thats inside the drive. Sequential data is stored all in a row. Hard drives can read sequential data failry quick since the heads barely have to move but random data, where the heads have to move all over the platter to find the data, bring them to their knees. Even a slow SSD would be way faster than an HDD.

Video data is typically stored sequentially and either type of drive should work for you just be aware that the best practice is to have separate source and destination drives. This avoids having HDD heads moving around trying to read data (the source/unedited file) and the write it (The destination/edited file) at the same time.

SSD's have no moving parts and they can access random data super fast compared to HDD's. Even todays fastest HDDs have random reads and writes measured in just 1 or 2 MB/s for reference.