When I got my Samsung 830, I wondered whether or not to enable trim. In researching the issue, I came across this question:
"Given that
Apple uses the same controller in their shipped MBP with SSD's and the Apple engineers decided to enable TRIM, why wouldn't you?"
I decided to enable trim.
Go
here and download TRIM Enabler and remember to enable after every OS update.
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Nothing easier than to put a Samsung 830 in your MBP.
If you can work a screwdriver, you're home free.
I did this:
1. Bought an external enclosure and put the Samsung 830 in there.
2. Carbon Copy Clone'd (Google and download the free trial). the existing hard drive to the Samsung in the enclosure.
3. Swapped out the hard drives.
Once you install, go into disk utility and set the Samsung as the startup disk.
Then download
Trim Enabler and you've just completed the best upgrade you'll ever perform on that MBP.