Mind as well quote the whole article, no?
The most important piece of information is the one pertaining to if DuraWrite makes TRIM obsolete or not, which was what you wrongly have been implying in your posts:
And when TRIM is present, DuraWrite creates more free space on the SSD than would be possible otherwise.
Now lets take apart the rest:
However, having significant amounts of free space does not linearly improve the performance of the SSD, because there are other bottleneck points in place.
Does not linearly improve, but improves. Just not expect to have 50% more performance if you have 50% more space, this is what
linearly means
Therefore, an SSD with DuraWrite in a system that doesn't support TRIM behaves much like a regular SSD that does support TRIM. It is also possible to use DuraWrite in a RAID environment and get the benefits of having the TRIM command without the RAID drivers having to support TRIM.
Again, if you didn't understand, I'll explain, they are
comparing an SSD drive with DuraWrite NOT using TRIM and an
SSD without DuraWrite using TRIM, and in that scenario they are equivalent, however, contrary to what you have been implying this does not make TRIM obsolete, because:
And when TRIM is present, DuraWrite creates more free space on the SSD than would be possible otherwise.
which improves performance albeit not linearly.
Which brings me to the point I was trying to make - IF you buy a 3rd party SSD rather than getting one from Apple, you should get one that uses the SandForce controller because the performance gains you would attain by enabling TRIM are negligible if present, and you are better off NOT disabling the signing of Kernel Extensions, which is what the TRIM enabler does.
1- You are changing your point, you have been implying DuraWrite makes TRIM obsolete, which is
FALSE.
What you actually stated is:
"If you buy an SSD with a sanforce controller (for example, from Other World Computing/Macsales,) you don't need trim support because it handles the reapportioning of data at the ROM level. So there are SSDs that are fully supported on Macs as in not needing TRIM support yet fully optimized for data reclamation." (this claim is also not true, AFAIK, DuraWrite reduces the writes and amount of data written, but it does not liberate more sectors for GC, which is what TRIM does)
2- SandForce controllers are not the only ones using similar technology to that of DuraWrite
3- "because the performance gains you would attain by enabling TRIM are negligible if present": Where's the data to back up this claim?
And, yes, I know that OWC has some blog posts about TRIM and SandForce, but they are the ones selling the drives to Mac costumers, so not exactly unbiased.
Do you really want to pursue this further and risk misleading people by giving incomplete or wrong information?
As for disabling signing of Kernel Extensions, I agree. However the whole point of the discussion was about buying a Mac with an Apple SSD or one without and getting an SSD from another vendor after, and the later has this issue with TRIM where in either case it's not a perfect solution, so people should be aware of what they are getting.
Edit: Several corrections and facts checked and updated accordingly.
