What speeds are you seeing? Like the 2010 Mac Pro above, the 2010 MBP is also SATA II.
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Resolved Slow SSD write speeds on older iMac
- Thread starter glenthompson
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What speeds are you seeing? Like the 2010 Mac Pro above, the 2010 MBP is also SATA II.
Same issue as the other person.... that is a SATA II connection Mac and that is all you are going to get.
it's sad we need to be THIS informed before purchase. connections? really? i'll stay with mac but will research much more.
What? That's simply the progress of technology and affects PCs and Macs alike.
I picked up the $50 OWC to compare. Read and Write speed test were over 500MB/s - so a little faster and $35 cheaper than the Velocity.
I'm really stoked with my new (to me) 2010 Mac Pro. Thanks for all the help on here! I'm upgrading from a 2007 iMac Extreme edition. Still works great for normal surfing, but the HDD reads @ 86 MB/s compared to 1,409 MB/s for the PCIe SM591 SSD I just put in the Pro. Two more 500 MB/s SSDs in the PCIe with OWC cards. And four open SATA II bays still. I love this thing!
Your laptop was from an era that SSDs where prohibitively expensive and most HDDs couldn't saturate SATA 2 speeds. There were exceptions but SATA 2 in 2010 laptops was status quo.
You are partway there. Now command-s boot to single user mode and enter the command below.
Code:fsck -fy
You should see a notice at the end of the run that says "trimming unused blocks".... that TRIMS the free space on the drive and should restore your write speeds.
Try that and reboot then do a speedtest again. Let us know how it goes.
I tried this... but I can’t seem to do the -fy
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It looks like you are on APFS and I'm wondering if the fsck utility has not yet been updated to handle that.
Regardless, since Sierra you can TRIM with Disk Utility in Recovery. Just command-r boot to recovery then run First Aid and you will see it TRIM like in this screenshot.
fsck does not work on APFS. APFS is alleged to do its own repairs when necessary on the fly. Have a read of this link:-
https://apple.stackexchange.com/questions/302925/apfs-errors-fsck-cant-repair
https://apple.stackexchange.com/questions/302925/apfs-errors-fsck-cant-repair
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ohhhhh weird. well my write speeds on my ADATA SU800 are seriously terrible. we are talking 17-19MB/s, read speeds are 500+
Reviving this thread. Any word on improving write speeds yet? I had forgotten to enable TRIM on an SSD I'd been using for several months, and I can totally tell the difference after this much use. I'm seeing the great read speeds (500MB/s+) through my OCW PCIe adapter, but write speeds are pretty bad--half that speed or less.
I tried the same tests on a newer SSD (that I normally have in my PS4pro) and get 500/500 r/w, but fsck -fy doesn't work on my normal OS drive since it's APFS. Recovery mode first aid in disk utility doesn't appear to trim free space either. Kinda frustrating to see my spinning drive matching the write speeds of a modern SSD.
I tried the same tests on a newer SSD (that I normally have in my PS4pro) and get 500/500 r/w, but fsck -fy doesn't work on my normal OS drive since it's APFS. Recovery mode first aid in disk utility doesn't appear to trim free space either. Kinda frustrating to see my spinning drive matching the write speeds of a modern SSD.
Yes, and there was never even a line that said "Trimming unused blocks." I should add that when I run a Speed Test, it will occasionally start around 400MB/s, but it drops down into the 100s before switching to the read test.
Just came across this today as noticed my Mid 2012 13" MBP with a Samsung 850 Pro Evo 512GB SSD was writing really slow. Black magic had it at 11MB/s write and 500MB/s read.
Did the trim enable and single user fsck -fy before I realized about the lack of f in APFS. Anyway, even with that black magic is now 498MB/s write and 500Mb/s read so pretty happy there thanks!
Did the trim enable and single user fsck -fy before I realized about the lack of f in APFS. Anyway, even with that black magic is now 498MB/s write and 500Mb/s read so pretty happy there thanks!
What a wonderful reminder on the benefits of TRIM. I experienced this myself with various Intel SSDs (that did not degrade in write speeds as drastically as yours, though). Just keep TRIM enabled at all time.
Best,
Magnus
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And let's remember that not only does TRIM improve performance but it also greatly reduces write amplification thus contributing to SSD longevity.
sorry for reviving this thread.
wondering if this adapter can be mounted on iMac as well.....
thanks.
I know this thread is old, but I have a Samsung 850 pro ssd and it was fine for 1.5 years but now the write speeds are about 30mb/s. its so slow and i dont know why? I dont know what trim is? it is installed in a mid 2012 macbook 13 inch with 16gb ram running catalina. could anyone help me in 2021
I know this thread is old, but I have a Samsung 850 pro ssd and it was fine for 1.5 years but now the write speeds are about 30mb/s. its so slow and i dont know why? I dont know what trim is? it is installed in a mid 2012 macbook 13 inch with 16gb ram running catalina. could anyone help me in 2021
Without going much into detail, TRIM is an operation system level command which essentially provides that a SSD‘s flash chips face fewer erase and rewrite cycles when data is deleted and the available space newly used.
This maintains a SSD‘s write speed over time and also reduces wear caused by write operations.
When your SSD‘s write performance slows down like yours, it could be that (1) your drive is exhausted (but doubtful after 1.5 years, and the Samsung is a great drive) or that (2) exactly TRIM is not active. Note that macOS by default deactivates TRIM on non-Apple drives, so this is a likely case here.
To test for (1), download the free (for a trial period) app DriveDx, run it and post a screenshot. High numbers for reallocated sectors or high drive write values would indicate an exhausted SSD.
To test for (2), click the Apple logo on top left corner and open ‚about this mac‘, then click on ‚system information‘ and there select ‚SATA‘. You’ll find an entry for TRIM enabled, and most likely the value is ‚no‘.
If that is the case, time to activate TRIM!
First, and if you have not already done, create a backup!
Then, open the ‚Terminal‘ utility in the ‚programs->utilities‘ folder and enter the following command:
Code:
sudo trimforce enableIt’ll ask for your admin password and then whether you really want to do that. Confirm, and then TRIM will be activated and eventually, after a short time, your machine will reboot.
Check again under system information whether TRIM now is activated. If so, that’s all you have to do.
Already after a few minutes with TRIM you should see a great improvement in SSD performance.
Good luck!
Magnus
Hey thanks so much! done this and now my speeds are back up to 200-300mb, wish isnt amazing by todays standards but way better then 30MB/s so thanks alot for your help! Laptop still feels a bit sluggish but thats maybe because I just done a full shutdown so all the RAM would be cleared and so on instead of sleeping it. But thanks once again.
Just wish I had money to buy one of the nice new M1 Pro or M1 Max models
Hey thanks so much! done this and now my speeds are back up to 200-300mb, wish isnt amazing by todays standards but way better then 30MB/s so thanks alot for your help! Laptop still feels a bit sluggish but thats maybe because I just done a full shutdown so all the RAM would be cleared and so on instead of sleeping it. But thanks once again.
Just wish I had money to buy one of the nice new M1 Pro or M1 Max models
Glad it worked for you! M1 Pro or Max, next year it will be… ;-)
Magnus