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Newbie
Posts: 5
Registered: ‎03-01-2016
Accepted Solution

USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

I just bought usb 32GB and 64GB ultra flair cz73
I checked and read write speed on port usb 3.0 (sure enough driver)
And good read speed 130MB / s - 145MB / s
But the write speed is quite bad. 10 seconds beginning 60-80MB / s and descending rapidly then only 25 - 30MB / s
I used ISO, MKV to test copy and paste between USB and SSD
I hope there will be firmware fixes sandisk soon, I expect a higher write speed of at least 60MB / s
Thank sandisk

95636f0be8ccbf.img.jpg

 

Newbie
Posts: 5
Registered: ‎03-01-2016

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

[ Edited ]

write speed is not stable
Tests ISO file on a 1GB capacity is always slow only 30MB / s
Conversely smaller than 1GB files are always fast 60MB / s

 

1.png2.png]

Newbie
Posts: 17
Registered: ‎02-19-2016

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

The speed of the flash drive depends upon different factors. The factors includes the USB interface through which the flash drive is connected, the type of files being transferred and the operating system. Also, this  flash drive Read Speed can reach up to 150MB/s and it has no published Write Speed.

Newbie
Posts: 11
Registered: ‎09-29-2012

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

The max writing speed is 15x faster than a standard flahs drive (4MB / s)., That gives a maximum speed of 60MB/s which varies depending mainly on the size of the file, 

 

NOTE:  The SanDisk Ultra line does not ensure a stable sequential write speed (dont have the write speed on the packaging). If you want high-speed sequential write, you must switch to  SanDisk Extreme line.

 

The file system and the cluster size are also factors that influence the speed of large files. Test as follows:

 

CAUTION: This will remove all the contents of your USB flash drive, be sure to select the correct removable drive letter and make a backup if necessary.

 

Download the SD Card Formatter Sofware  link: https://www.sdcard.org/downloads/formatter_4/eula_windows/index.html

D
isconnect any USB device, and insert the USB flash drive, then open the "sd card formatter", click on "Option" and select "Format size Adjustment: ON",  and proceeds formatting.

 

The USB flash drive will be formatted in exFAT file system, You can make a new speed test now, I recommend the CrystalDiskMark:  http://crystalmark.info/download/index-e.html

 

Good Luck!

Nicolas Zartaryan,
MEGA-IMPORT
Buenos Aires, Argentina
SanDisk Reseller
Newbie
Posts: 5
Registered: ‎03-01-2016

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

format sd card On - 1g.png

 

format sd card On - 1g.png

 

1.png 2.png

 

3.png

 

 

 

write speeds improve, thank you very much

SanDisk Guru
Posts: 2,404
Registered: ‎07-23-2010

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

Not sure what kind of images you are trying to show but none of them appear.  Only a square with a triangle in it.

Ed
Important files = Backed up files
Newbie
Posts: 5
Registered: ‎03-01-2016

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

3633081_1.png

 

Write speed 30MB/s, Read Speed 130MB/s

i sure

 

SanDisk Guru
Posts: 2,404
Registered: ‎07-23-2010

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

Click on this URL to see what we see when you post images ronganh.

 

http://imgur.com/trVjnZu

 

You need to post your images to a different service for people to see them here.

Ed
Important files = Backed up files
Administrator
Posts: 543
Registered: ‎07-20-2007

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

We have enabled picture uploads for the community. There was a permissions problem that has now been resolved. Going forward you do not need to upload to an external site.

 

Forum Admin

slotmonsta

Newbie
Posts: 5
Registered: ‎03-01-2016

Re: USB Ultra Flair SDCZ73 32GB/ 64GB 3.0 - Write Speeed only 25MB/s

Hi admin

This is my picture in test

original.png

Write speed is 31MB/s Smiley Sad 

i hope it x15 usb 2.0 speed is 60MB/s