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The Samsung 830 SSD thread
- Thread starter Acejam2k
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Just 55°C? No wonder they are running at full speed. Maybe you damaged the fan cables or something similar.
I searched the thread too and I don't see any screen shots of Black Magic with a 128GB SSD.
Bummer. There's gotta be one out there somewhere!
I have two SSD drives in other machines and I want to pop one into my Mac Mini which is getting delivered today. The drives I have are:
128 GB Samsung 830 SSD
240 GB Intel 330 SSD
In my Mini, I have an external USB 3.0 drive for all my media, so the internal SSD only uses about 40-45 GB of space. When I tested the 240 GB Intel 330 drive in a previous Mac Mini, I got a BlackMagic score of write/read 215/440. I just want to know if the 128 GB Samsung 830 would be faster and worthwhile installing instead of the Intel drive. Thanks!
I've had the Samsung 830 512gb SSD for over a year now and its been performing flawlessly. When I installed it, it gave me read/write speeds of 300/400 using black magic.
Today I did a black magic speed test and now i'm getting read/writes around 200. This is a significant decrease in about a year. I did my research and came across articles stating to enable TRIM, something I did not do in the past since my machine was working fine, and it still is.
I just enabled TRIM with the TRIM enabler app on my late 2011 MBP. My question to everyone is.... Will my read/write speeds come back up to what they originally were? If so, how?
Thanks in advance.
Today I did a black magic speed test and now i'm getting read/writes around 200. This is a significant decrease in about a year. I did my research and came across articles stating to enable TRIM, something I did not do in the past since my machine was working fine, and it still is.
I just enabled TRIM with the TRIM enabler app on my late 2011 MBP. My question to everyone is.... Will my read/write speeds come back up to what they originally were? If so, how?
Thanks in advance.
First off, I am not going to claim that I know everything about SSD technology. It's quite the opposite, actually. However, here are my thoughts:
1) Enabling TRIM will probably make a difference since over the years, your SSD's built-in Garbage Collection routines have likely not been as effective as TRIM, especially if you didn't leave your system powered on all the time. How much of a difference this makes in your particular scenario is only something that you can measure (and hopefully share here).
2) How much free space do you have? I'm pretty sure that if your SSD is at or near capacity, performance will suffer. This is definitely the case with OS X. Try to keep at least 15-20% of the drive free/unused.
3) Consider backing everything up, erasing/formatting/partitioning the SSD and installing OS X from scratch without restoring from the backup. Once the OS is in place, including all updates, try another round of tests. If the performance is back, restore your data from your backup.
4) Use SuperDuper or Carbon Copy Cloner to image your SSD to an external drive. Then erase/format/partition your SSD, restore the image back to your SSD, and see if your drive's original performance returns.
I'm sure that there are other things you could try, so hopefully someone else will chime in...
Non-apple supplied drives have this issue. Use HDD fan control or some similar app to control the iMac fans.
Cheers,
THanks for the advice. Is there any other way to get the numbers up without erasing and reinstalling the Os? I have about 20% free space on my disk.
Now,according to blackmagic, my write speeds are around 385 and my read speeds are 472 so I think enabling the TRIM has helped out...so far.
Interesting article I thought was worth adding for those still interested in this thread/topic:
Aftermarket SSD On A MacBook Pro: TRIM Gets Tested
http://www.tomshardware.com/reviews/macbook-pro-ssd-trim,3538.html
"...We've spent a lot of time talking to storage professionals, including some from LSI, who agree that TRIM is beneficial, even when your controller is designed to make the most of free space on an SSD. So, if a SandForce-based drive can see some benefit, so will any other solid-state repository you install. Consequently, it's worth it to get TRIM working, even when Apple tries to keep you from the command artificially."
"...More important are the endurance-oriented reasons to keep TRIM turned on. Without the command, your operating system knows when data is deleted, but has no way to tell the SSD's controller. In turn, the SSD keeps moving that information around via garbage collection, unnecessarily programming and erasing the flash memory cells with stale data. This means that, at some point, the SSD will fill up with data, leaving the controller only with over-provisioned flash with which to work. That's seven to 12% of most desktop SSDs, and includes the space for firmware features like bad block replacement."
Aftermarket SSD On A MacBook Pro: TRIM Gets Tested
http://www.tomshardware.com/reviews/macbook-pro-ssd-trim,3538.html
"...We've spent a lot of time talking to storage professionals, including some from LSI, who agree that TRIM is beneficial, even when your controller is designed to make the most of free space on an SSD. So, if a SandForce-based drive can see some benefit, so will any other solid-state repository you install. Consequently, it's worth it to get TRIM working, even when Apple tries to keep you from the command artificially."
"...More important are the endurance-oriented reasons to keep TRIM turned on. Without the command, your operating system knows when data is deleted, but has no way to tell the SSD's controller. In turn, the SSD keeps moving that information around via garbage collection, unnecessarily programming and erasing the flash memory cells with stale data. This means that, at some point, the SSD will fill up with data, leaving the controller only with over-provisioned flash with which to work. That's seven to 12% of most desktop SSDs, and includes the space for firmware features like bad block replacement."
I bought a 830 in July 2012, the 512 gb variety. After installing in my macbook pro 2011, it was the best computer upgrade I'd ever done (my first ssd). I performed Blackmagic tests after install and every now and again over the past two years. I opted to not enable trim.
In the beginning, Blackmagic tests were in the 400's or so, and over the course of two years, slowly degraded to around 100. I too felt the system lost a bit of pep. I tried leaving over a 100 gb free as some mentioned the drive might not be happy at or near capacity. This had little effect on the declined performance.
I enabled trim 4 days ago, and each day since Blackmagic is reporting higher speeds. Today I'm at 360 write, 400 read. The system appears a bit snappier too. If I discover any adverse effects I'll post them here.
In the beginning, Blackmagic tests were in the 400's or so, and over the course of two years, slowly degraded to around 100. I too felt the system lost a bit of pep. I tried leaving over a 100 gb free as some mentioned the drive might not be happy at or near capacity. This had little effect on the declined performance.
I enabled trim 4 days ago, and each day since Blackmagic is reporting higher speeds. Today I'm at 360 write, 400 read. The system appears a bit snappier too. If I discover any adverse effects I'll post them here.
Keep an eye on your TRIM enabler after each update to OS X that you apply. Sometimes, but not always, it gets turned off and you have to turn it back on.
Yesterday I removed the 830 from my 2012 MBP and put in an 840 EVO and the Blackmagic tests pegged the meters where the 830 didn't.
Boot to single user mode then enter "fsck -fy" (without the quotes) at the command line and enter. That will TRIM all unused blocks on the drive and should restore performance. Make sure TRIM is enabled before you do this. Then type reboot.