850 EVO is underperforming in CrystalDiskMark. What could it be?

[Noirgheos]

As you can see, the Read speeds look good enough, but the Writes are consistently lower than what a quick Google search brings up. Could it be because I only have 31% free?

[Simon771]

How old is that SSD?

410MB/s write speed doesn't looks that bad to me.

 

Give me few minutes and I will test my evo 850 also

[ShepBook]

Maybe TRIM isn't working like it should? That can cause slower writes.

[Noirgheos]

1 minute ago, Simon771 said:

How old is that SSD?

410MB/s write speed doesn't looks that bad to me.

 

Give me few minutes and I will test my evo 850 also

About 4 months old.

Just now, ShepBook said:

Maybe TRIM isn't working like it should? That can cause slower writes.

Windows shows all my drives as having TRIM enabled. Should I force TRIM on it and try again?

[ShepBook]

1 minute ago, Noirgheos said:

Should I force TRIM on it and try again?

Give it a try and see! (Science!)

[Simon771]

Well it seems like your SSD is underperforming a bit.

This is my test of Samsung EVO 850 250GB. It's around 1,5 years old and around 15TB writen on it.

 

[Noirgheos]

7 minutes ago, ShepBook said:

Give it a try and see! (Science!)

 

5 minutes ago, ZenPowerBuilder said:

Looks pretty good to me. The scores are pretty normal for something running on SATA 3 (600 MB/s)

 

3 minutes ago, Simon771 said:

Well it seems like your SSD is underperforming a bit.

This is my test of Samsung EVO 850 250GB. It's around 1,5 years old and around 15TB writen on it.

 

TRIM seems to have done the job. It had been 23 days since it was last run. Should I tell Windows to do it more frequently?

[Simon771]

1 minute ago, Noirgheos said:

TRIM seems to have done the job. It had been 23 days since it was last run. Should I tell Windows to do it more frequently?

I'm glad that solved your problem

TRIM should be ran once a week, or once a month if you are not installing and uninstalling a lot.

[Noirgheos]

1 minute ago, Simon771 said:

I'm glad that solved your problem

TRIM should be ran once a week, or once a month if you are not installing and uninstalling a lot.

All these games I'm torrenting... heck of a lot of both. Will set it to run weekly. Well, it already does say weekly. Thing is, it didn't.

[ShepBook]

Yeah, TRIM is good to run more often. It can help keep performance consistent, especially if you're writing and rewriting a lot of data. (say, video encoding).

[Noirgheos]

1 minute ago, ShepBook said:

Yeah, TRIM is good to run more often. It can help keep performance consistent, especially if you're writing and rewriting a lot of data. (say, video encoding).

I think I'll set it to daily. It was set to weekly, but windows didn't do it for the past 23 days... Anything to worry about if I set it to daily?

[Simon771]

1 minute ago, Noirgheos said:

I think I'll set it to daily. It was set to weekly, but windows didn't do it for the past 23 days... Anything to worry about if I set it to daily?

Well it's good to run it often, but not too often lol

Weekly should be good, just manually check if it's acctually done every week.

[ShepBook]

My understanding is that TRIM just tells the SSD to go clear out cells marked for "deletion". Deleting a file on an SSD doesn't guarantee it will actually by physically deleted. It might increase the wear level a bit, and if it TRIMs when you're busy, it might impact performance for a bit. I think windows tries to TRIM only when the SSD isn't busy, so if you've had a lot of torrents running, it might never have gotten to the point where it triggered the TRIM to run.

[Noirgheos]

10 minutes ago, ShepBook said:

My understanding is that TRIM just tells the SSD to go clear out cells marked for "deletion". Deleting a file on an SSD doesn't guarantee it will actually by physically deleted. It might increase the wear level a bit, and if it TRIMs when you're busy, it might impact performance for a bit. I think windows tries to TRIM only when the SSD isn't busy, so if you've had a lot of torrents running, it might never have gotten to the point where it triggered the TRIM to run.

Ah, I see. I'm usually running one every two days. Its mostly that I play tons of games. That may be it. TRIM takes five seconds to run, so I think I'll just do it manually weekly. Can I create a .bat that does it regardless of what's going on?

[ShepBook]

2 minutes ago, Noirgheos said:

Can I create a .bat that does it regardless of what's going on?

I'm all for automating things! I'm sure there's some way to do this, but my windows scripting skills aren't the best. 

[jimbo02816]

I was having same problem. Installed Samsung Magician and enabled the "rapid" selection. Speed jumped at least 8x faster.

 

SSD 850 EVO 500GB.docx

[jimbo02816]

Sorry, new to this forum. Here are the benchmark scores.

CrystalDiskMark 5.2.2 x64 (UWP) (C) 2007-2017 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

   Sequential Read (Q= 32,T= 1) :  4465.574 MB/s
  Sequential Write (Q= 32,T= 1) :  4918.132 MB/s
  Random Read 4KiB (Q= 32,T= 1) :   464.490 MB/s [113400.9 IOPS]
 Random Write 4KiB (Q= 32,T= 1) :   313.034 MB/s [ 76424.3 IOPS]
         Sequential Read (T= 1) :  7968.601 MB/s
        Sequential Write (T= 1) :  5392.322 MB/s
   Random Read 4KiB (Q= 1,T= 1) :   501.047 MB/s [122325.9 IOPS]
  Random Write 4KiB (Q= 1,T= 1) :   331.315 MB/s [ 80887.5 IOPS]

  Test : 500 MiB [C: 19.1% (88.9/465.3 GiB)] (x5)  [Interval=5 sec]
  Date : 2017/09/10 12:55:50
    OS : Windows 10  [10.0 Build 15063] (x64)