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Usb 3.0 Write Speed Slow but Read Speed Is Fine

Written By Thursday, March 3, 2022 Add Comment Edit
  • #i
Hi. I recently purchased a Dell Inspiron 5502 Laptop. Information technology has a 512GB M.2 PCIe NVMe Solid State Drive. USB port I'1000 using is a USB 3.2 Gen 1.

I am transferring documents from this new laptop to a Sandisk Ultra Luxe USB 3.1 Gen 1 flash bulldoze. I merely bought this flash drive because....3.1 gen one. Super fast correct??

WRONG!

The write speed to the flash drive is VERY frequently BELOW 1 Mb/south. Yes that'due south right, nosotros're talking Kb/south speeds. I've seen the speed go to literally zero, and sit for for a few seconds.

The max speed I've seen the transfer become up to is about 25 Mb/s. but most of the time information technology'southward in the depression unmarried digit Mb, or below 1 Mb.

I accept set up the policy of the USB wink drive to "ameliorate operation"

I will endeavour my External Hard drive three.0 adjacent and see if that is just equally ho-hum, but what the heck?

cheers

Fred

USAFRet
Mar 16, 2013
151,016
10,278
175,890
23,605
  • #7
xvi,000 files WILL transfer a lot slower than a single large file of equal cumulative size.
rgd1101
Nov 7, 2011
65,961
ii,758
159,190
6,615
  • #3
OK, and then I just tried my external WD Elements 3.0 iii TB bulldoze, and its so much faster. 80 Mb/southward high so far.

I guess the Sandisk Ultra Luxe USB iii.ane Gen 1 flash drive simply..........bad.

Grobe
Jan 22, 2009
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  • #4
Cheap usb drives usually have a poor belongings of having only a pocket-sized number of files that tin exist transfered per fourth dimension unit. So it doesn't affair if it have USB3 or if the manufacturer claim it to accept 80MB/due south write speed - that only applies to very big files.

Hard drives have it'south own buffer and suffer less from this issue.

  • #5
Cheap usb drives unremarkably have a poor property of having only a small-scale number of files that can be transfered per fourth dimension unit. And then information technology doesn't matter if information technology accept USB3 or if the manufacturer claim information technology to take 80MB/due south write speed - that but applies to very big files.

Difficult drives accept information technology's own buffer and endure less from this issue.

thanks,didn't know that virtually the large files. I don't think I have any large files in my documents. (no full lenth movies etc.)

I noticed the read speed from flash drive tin can hitting 130 Mb/s and then I guess that'southward practiced plenty (flash drive states speeds up to 150 Mb/southward read)

I as well reformatted the flash drive to NTBS rather than the default FAT32 which I understand is better for performance (with Windows 10)

Merely I was notwithstanding expecting much faster write speeds.

  • #6
I'm not sure what qualifies every bit a big file, but aye, I'm sure I have almost all small files. These are my Documents from ten+ years. Some 1080p camcorder videos. But no full length HD movies

again the read speed hit a high of about 130 Mb/s so I estimate it'southward still faster than a USB 2.0. My expectations were very high. Never heard about the small-file speed limitation thing. I mean I'g watching the transfer speed sitting at 150 Kb/s. Small files or not WTH?

This laptop has a USB 3.2 Gen 2 blazon C port. Speeds upwardly to 10Gb/south transfer speed (so say the specs). But if all I have is small files, what the heck does it affair? lol.

USAFRet
Mar sixteen, 2013
151,016
x,278
175,890
23,605
  • #7
16,000 files WILL transfer a lot slower than a single large file of equal cumulative size.
rgd1101
Nov 7, 2011
65,961
2,758
159,190
half dozen,615
  • #8
This laptop has a USB 3.ii Gen 2 type C port. Speeds up to 10Gb/s transfer speed (and then say the specs). But if all I accept is small files, what the heck does it matter? lol.
get an external ssd.
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Source: https://forums.tomshardware.com/threads/super-slow-usb-3-1-gen-1-write-speed.3678563/

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