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Memory card now transfers slowly


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#1 cornflakes2

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Posted 06 July 2015 - 02:11 AM

I've been using a micro sd card with sd adapter for my laptop for a year or so with no transfer rate issues.  But recently, I noticed the transfer speed has slowed down and it takes much longer now.

 

Is this most likely an issue with a) the micro sd card, B) the adapter, or c) the laptop sd card slot?

 

Is there any way to fix this?



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#2 technonymous

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Posted 07 July 2015 - 01:37 AM

How slow is slow? What's the file transfer speeds you're getting? What model? What class? Is it USB 2.0 or 3.0? Is it full? What format is it? Do you transfer small files or large files? Are you running a multiple USB devices?



#3 AlicePhoebe

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Posted 07 July 2015 - 05:14 AM

Try setting the drives for quick removal rather than "optimized". Though the cache may be useful for drives that are frequently accessed and provide greater speeds, the cache may slow down actual file transfers.
Do you see "enhanced" USB drivers in Device Manager?
How about other devices - do you have better speeds with them? And have you tried a different reader? Sometimes readers that are cheap don't actually support what they claim, sometimes I think more due to translation problems sometimes that actual deception. Readers are not quite all the same.


#4 cornflakes2

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Posted 10 July 2015 - 02:06 AM

I'm using a sandisk adapter, with 32 gb micro sd sandisk ultra class 10, on usb 2.0 speeds (at least it always used to transfer at 2.0 speed).   It is in NTFS format.  I usually transfer video files between 50mb to as much as 1.5 gb in file size per file.

 

I've transferred with no problems for years doing this but suddenly it has just become slow.  I don't know exactly what speed it's transferring at but for example, it used to take me only a minute or 2 to transfer like 4-5gb off the card but now it takes me 7-10 minutes.  Sometimes it'll say 2 minutes remaining it looks to be going at a good rate but then suddenly the reading tells me it will take 8 minutes now after 20-25% transferred.

 

It's the same card and same card reader I've been using so it was transferring before fine, just don't know why it just suddenly now transfers slowly.



#5 technonymous

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Posted 12 July 2015 - 08:13 PM

A class 10 is 10MB. I probably has some degradation after using it for a year. NTFS has more overhead for journaling and file encryption. Larger files you might get better performance with exfat. Also try changing the performance. Go to start type devmgmt.msc right click the usb drive and change it to better performance. However, on performance you have to detach the flash drive poperly or you could get data loss.






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