PS3 & SSD

[Lurkios]

OMG, please use at least Wikipedia before spreading this nonsense.
TRIM is the command, which actually tags the free space, it doesn't zero anything. Without it the drive doesn't know which data is still in use and once the drive was full once, it will be full forever for the drive firmware. Once the OS tells the drive which areas are free, it makes garbage collection more efficient and reduces the number the writes needed, thus increases the life span of the drive.

Did you actually read the Wikipedia on TRIM before typing that out? It confirms everything I said in the first 3 paragraphs.

At the very least you seem to be a bit mistaken about what "wear leveling" is. Reducing reads is not "wear leveling", wear leveling is evenly distributing writes across blocks of memory so that no single block is written to significantly more times than any other. It causes all of the cells to wear at a more or less even rate. Although, with the amount of over provisioning in most SSDs I'm not entirely sure how necessary it is (not that it hurts).