Mac mini Late 2014 - Slow SSD speed issue

[antobarbunz]

Hi everyone, I've a Mac mini late 2014. I upgraded it by installing a Samsung SSD.
After some month I noticed a considerable slow-down, in first glance I thought it was something in the pc, later I did a test with Blackmagic Disk Speed Test,and I discovered that the write speed is 74MB/s....with an SSD... I searched on various forums but I did not find a solution.

Before you say that the hardware is not compatible with higher speed, initially the speed was 440-450 MB/s.
The strange thing ism that if I do the test just after a reboot it goes up to that speed...but after some minutes of usage I notice a performance decrease, and if I run another test I discover that the speed has dropped to 70-75 MB/s

(I already tried to initialize the entire Mac to factory status)

Thanks in advance

 

[pm-r]

Hi everyone, I've a Mac mini late 2014. I upgraded it by installing a Samsung SSD.
After some month I noticed a considerable slow-down,

My first question would be:
1, how full is the SSD drive???

2, If within limits, I would be tempted to just have a look at the fragmentation with an app like iDefrag and see what state your files are in. DO NOT DO ANY ACTUAL DEFRAGGING ... just look!!!

3, what other applications or utilities are running, either in the foreground or the background???
This could include Spotlight, file sharing, backup or networking stuff etc.

You did not mention what model Samsung SSD you installed, if that actually matters.


- Patrick
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[antobarbunz]

1, how full is the SSD drive???

Actually, as I wrote, I just intialized all thing, is empty (the ssd is 1TB)

what model Samsung SSD

Samsung QVO I think

 

[pm-r]

Actually, as I wrote, I just intialized all thing, is empty (the ssd is 1TB)

Samsung QVO I think /QUOTE]


Is the Samsung SSD returnable??? Maybe it's gone Goofy???

Have you tried booting up into Safe Boot Mode and see if things don't improve???

Have a look at the Console or especially Activity Monitor for any runaway apps or utilities or any of their resources.


- Patrick
=======

 

[antobarbunz]

I didn't tried the Safe Boot

however the pc now is like brand new.. what process can do this..

 

[pm-r]

I didn't tried the Safe Boot

however the pc now is like brand new.. what process can do this..

I am not sure exactly what you are referring to, but anything made or created in this world can fail.
That is a 100% guarantee for anything man-made!!!

That's why most decent companies have a decent warranty as well as a decent quality control to help protect their reputation.


- Patrick
=======

 

[chscag]

Before you say that the hardware is not compatible with higher speed, initially the speed was 440-450 MB/s.
The strange thing ism that if I do the test just after a reboot it goes up to that speed...but after some minutes of usage I notice a performance decrease, and if I run another test I discover that the speed has dropped to 70-75 MB/s

Sounds like a worn or defective SATA cable. Try replacing it.

Go to www.ifixit.com and look up the procedure. They also sell the cable as does Mac Sales.

www.macsales.com

 

[krs]

2, If within limits, I would be tempted to just have a look at the fragmentation with an app like iDefrag and see what state your files are in. DO NOT DO ANY ACTUAL DEFRAGGING ... just look!!!

Just wondering ...
Is fragmentation even a possible issue with an SSD?
Since the storage on an SSD is electronic, nothing mechanical, any fragmentation should only have a minimal effect if any.I swithed from a 500GB 5400rpm spinner to a 1TB Crucial DRAM SSD on my 2012 Mini and even though it is much faster launching apps or opening files, occasionally there is a very noticeable delay - mostly with MS Office applications.

 

[MacInWin]

Just wondering ...
Is fragmentation even a possible issue with an SSD?
Since the storage on an SSD is electronic, nothing mechanical, any fragmentation should only have a minimal effect if any.I swithed from a 500GB 5400rpm spinner to a 1TB Crucial DRAM SSD on my 2012 Mini and even though it is much faster launching apps or opening files, occasionally there is a very noticeable delay - mostly with MS Office applications.

Technically, all files on an SSD are probably fragmented by the wear-leveling function of the internal controller. As a practical issue, it doesn't make any difference in performance.

 

[Randy B. Singer]

Just wondering ...
Is fragmentation even a possible issue with an SSD?

No, not even a little bit.

An SSD can slow way down if it gets too full. About 80% full and most SSD's are on their last legs. But that isn't the OP's situation.

I think that it's more likely that the slowdown is systemic, rather than being caused by the SSD in particular. Have a look at:

Macintosh Slowdown Solutions

 

[hughvane]

This may be considered a broad generalisation, but in a situation like this, ie. "what's happening with my Mac?", I turn to the only fault finding app I ever use - OnyX! https://titanium-software.fr/en/onyx.html. It runs all sorts of tests on an HD or SSD, plus the OS, and reports what needs fixing.

 

[ferrarr]

This may be considered a broad generalisation, but in a situation like this, ie. "what's happening with my Mac?", I turn to the only fault finding app I ever use - OnyX! https://titanium-software.fr/en/onyx.html. It runs all sorts of tests on an HD or SSD, plus the OS, and reports what needs fixing.

If you want to test your system, you can use EtreCheck,

EtreCheck

etrecheck.com

It only scans your system, it does not change anything. Then you can use what you need.

Edit: For the OP,

Did you try safe boot?
Reset NVRAM?
Reset SMC?