SSD Lifetime

If you don't want to crunch through the math, Intel estimates that the 80GB X25-M will last for five years with "much greater than" 100GB of write-erase per day. That's a relatively long time for much more data than most folks are likely to write or erase on a daily basis.

Actual drive lifespans aside, Intel rates the [80GB] X25-M's Mean Time Between Failures (MTBF) at 1.2 million hours. That's competitive with the MTBF rating of other MLC-based flash drives and equivalent to common MTBF ratings for enterprise-class mechanical hard drives.

http://techreport.com/articles.x/15433