Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Lion: TRIM only for Apple-branded SSD's?
- Thread starter ThomasJL
- Start date
- Sort by reaction score
As I understand TRIM it increases the number of erases some sectors will see (the so-called write amplification). It depends upon the controller algorithms but with bad controllers the same sector is erased over and over again and lifetime of the SSD is reduced significantly. Therefore someone should have tested carefully, whether TRIM is a good thing for a certain drive or not. If your preferred computer supplier does not recommend TRIM for all possible SSD you should consider this as a good hint, not as a trick.
As I said earlier, SSD technology is not mature. I remember the first days of hard discs, when you needed a driver in your OS who was aware of the specific model of hard disc. Today you can connect any SATA hard disc to any SATA motherboard, but it will take some more years until SSD is as mature as this.
As I said earlier, SSD technology is not mature. I remember the first days of hard discs, when you needed a driver in your OS who was aware of the specific model of hard disc. Today you can connect any SATA hard disc to any SATA motherboard, but it will take some more years until SSD is as mature as this.
With normal usage, SSD's will last at least 5 years and likely closer to 10. how long do you keep your drives before upgrading?
How do you know TRIM support is "iffy"? I used the TRIM enabler on my new 240GB OCZ Vertex 3 drive and it caused lockups every 1-2 minutes for about 10 seconds. That's why it's not enabled by default.
I have a Kingston SSD in my MacBook and there is no TRIM support in Lion DP4 for my drive.
However the TRIM enabler does work in Lion to enable this. Hopefully apple will eventually add it for all drives, but for now there is a working fix.
However the TRIM enabler does work in Lion to enable this. Hopefully apple will eventually add it for all drives, but for now there is a working fix.
I read many issues when enabling the Trim hack for OSX. Most users complain it is much slower switched on.
atm Trim is switched off and running for 5 month very smooth. I think it is important to always keep about 20% free space to keep it smooth. Not sure about that though.
atm Trim is switched off and running for 5 month very smooth. I think it is important to always keep about 20% free space to keep it smooth. Not sure about that though.
It's actually hit or miss depending on the SSD. I had zero issues with TRIM enabler on my Hackintosh, however it is true that a number of people have had issues.
Just saying you can't just assume that it doesn't work. Heck, it worked for the guy that initially released it...
I am unsure about this. Does TRIM do the data erase using the filesystem type or is it done low level?
Yup - TRIM allows the OS to communicate low level facts about the file system to the hard drive - basically "It's OK to erase these blocks since they aren't really in use".
Since Windows has no clue as what is going on with the Mac partition, it would only TRIM the windows partition.
For a Mac, if you aren't using an Apple SSD you should get an SSD that is over-provisoned and uses a SandForce controller - like the ones that OWC/macsales.com sells. The drive takes care of ensuring that there are plenty of free cells to write to by performing garbage collection on it's own. Same end result as TRIM, but it's OS independent. The only penalty is since there is extra flash for the over provisioning, SandForce based drives tend to cost a little more - but not always.
I have OWC drives in both my Mac Pro and my MacBook Pro and so far lack of TRIM is not an issue. My Mac Pro has been up for 7 months and is just as fast today as it was when I set it up initially.
This is off-topic but I have the same MacBook and my About This Mac window does not display the model year below "MacBook".Here is a screenshot proof for your Reference
This is off-topic but I have the same MacBook and my About This Mac window does not display the model year below "MacBook".
About this mac-> More info
