USB 3.0 - The more files i copy at same time , the slower the speed?

dazkyl · Nov 21, 2013

I got my new Z87 extreme 6 motherboard and its a USB 3.0 mobo.

I plugged my external hard drive in the usb 3.0 and when i started do copy , the speed was about 55 mb/sec. Is this good ?

Second question is , if im getting 50 mb / sec speed with 1 file , will the speed reduce if i for example copy another 200gb data at the same time ? In short , the more files im copying , the slower the speed ?

getochkn · Nov 21, 2013

yes it will reduce. i always avoid copying multiple things if possible as it makes the drive work really hard trying to keep 2 streams going for files copying.

dazkyl · Nov 21, 2013

getochkn :

Will copying all those files into a SSD drive fasten the speed?

burdenbound · Nov 21, 2013

What you want to do is select all the files you want to transfer at one time, this will allow the system to basically do one at a time versus initiating a second transfer at the same time. When you do that the hard drive is constantly jumping from one physical location to another to try and copy both files at one time, reducing the overall transfer speed.

The speed slow down isn't due to you transferring to a USB drive or an SSD, it's what you are reading from. A traditional HDD has slow seek times so when you initiate two separate transfers it has to physically move the head to read the files, an SSD would be faster to read from in the same circumstance but it still has a longer seek time than if it was reading one file at a time.

dazkyl · Nov 21, 2013

burdenbound :

So , what i should do is select everything and copy / paste them all at the same time ?

What i did was selected what i wanted and copy pasted , and while it was pasting , i selected other things i wanted to copy/paste , and did them as well.

burdenbound · Nov 21, 2013

dazkyl :

burdenbound :

So , what i should do is select everything and copy / paste them all at the same time ?

What i did was selected what i wanted and copy pasted , and while it was pasting , i selected other things i wanted to copy/paste , and did them as well.

Correct you want to select them all at the same time as opposed to what you have been doing.

dazkyl · Nov 21, 2013

burdenbound :

dazkyl :

Correct you want to select them all at the same time as opposed to what you have been doing.

Is copying one large file one at a time faster ? Because atm im copying alot of large data with about 3.7mb/sec. Why is it this slow ?

burdenbound · Nov 21, 2013

dazkyl :

burdenbound :

Is copying one large file one at a time faster ? Because atm im copying alot of large data with about 3.7mb/sec. Why is it this slow ?

generally one large file does transfer quicker than a lot of smaller files because the hard drive doesn't have to move the head to seek the file location. If your transferring this on to a standard USB drive, even if it is 3.0 they tend to be slow unless you buy one that is rated for high speeds.

Companies will use the USB 3.0 naming to sell their products even though they may be no faster than a middle of the road USB 2.0 device.

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USB 3.0 - The more files i copy at same time , the slower the speed?

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