Question Samsung SSD has slow Write Speeds ?

[nick100998]

Hi. I have 2 Samsung 870 QVOs 1TB SSDs, one of them is performing as expected with a write speed of over 500mb/s but the the other one which my OS is on only has a write speed of 80mb/s. I have had it like this for over a week and the SLC cache never seems to flush and my writing speeds never seem to retun to normal. Can someone help advise me on what can be done in this case?

Write Cache is already turned on and firmware is also up to date.

 

[Bob.B]

Hi. I have 2 Samsung 870 QVOs 1TB SSDs, one of them is performing as expected with a write speed of over 500mb/s but the the other one which my OS is on only has a write speed of 80mb/s. I have had it like this for over a week and the SLC cache never seems to flush and my writing speeds never seem to retun to normal. Can someone help advise me on what can be done in this case?

Write Cache is already turned on and firmware is also upto date.

Swap sata data cables between drives....test.
Swap sata ports on the mobo.....test.

What app are you using to test the ssd?

 

[SkyNetRising]

I have 2 Samsung 870 QVOs 1TB SSDs, one of them is performing as expected with a write speed of over 500mb/s but
the the other one which my OS is on only has a write speed of 80mb/s.

Windows is reading/writing to OS drive all the time.
Lower benchmark numbers are normal for OS drive.

 

[nick100998]

Swap sata data cables between drives....test.
Swap sata ports on the mobo.....test.

What app are you using to test the ssd?

I used both Crystaldisk Mark and Samung Magician and they both show the same numbers.

 

[Unolocogringo]

Is the drive over 80%full?
SSDs need about 20% free space for best performance.
Have you run Trim/ optimize in Disk defrag?

 

[nick100998]

Is the drive over 80%full?
SSDs need about 20% free space for best performance.
Have you run Trim/ optimize in Disk defrag?

It is around 60% full, I have ran both in disk defrag.