SSD transfer speed drops off

clifford64

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May 18, 2014
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I have had an ssd for about a year now and its just recently started having problems. I can delete items from the ssd and copy items from the ssd at full speeds, but when copying files to the sdd, it starts at full speed and after the first gigabyte or so, the speed just drops off down to a couple megabytes. Disk usage for the ssd is at 100% in task manager and average response time is at 1000ms. I have tried error checking and chkdsk and both come up with nothing. I have formatted the disk without quick format to see if it could come up with anything and it found nothing. Copying files to another ssd transfers at full speed. I have tried changing the sata port and the issue still persists. Does anyone have any idea what might be going on? I suspect a failing ssd, but I wouldnt think it would failing only after a year. Any ideas are appreciated.

Asrock z170 k6 mobo
gtx 770
Windows 10 64 bit pro
24gb ram
120gb PNY ssd: drive with issue
500gb Samsung evo 850: has no issues
1tb western digital: has no issues
1tb toshiba: has no issues
 
Solution
yep. have you checked with the drive manufacturer. samsung gave out a fix for there drives your drive manufacturer may have done the same.
A SSD need an available nand block to do a write to.
As the ssd gets full, there are fewer available free nand blocks available.
The ssd then needs to make more available.
As your ssd reaches 90% full, expect it to slow down and lose endurance.
If you have been operating at near capacity for a while, you may have lost update capability of some blocks.
I think you can see this in the SMART statistics.

Sounds to me like it is time to replace the 120gb ssd with a larger one.
 

clifford64

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May 18, 2014
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10,960


The ssd is formatted with no data on it, it still has this issue