It’s a neat little free app (1.5 MB) which will tell you given your usage stats, brand and make of SSD when it will be likely to fail. That’s not a guarantee, but if you have an early make and model SSD, you might want to find out and make plans around that rather than one bright day, poof and you’re running around like a crazy person, hunting and posting “What kind should I get?” Forum posts. SSDs from the very beginning have stories about bad life expectancy and locked storage. Remember? The first retail generation of solid state drives had lots of issues in this regard. The newer SSD’s really don’t have those issues, but some folks might wish to test and see their disk health, performance and reliability.
SSDLife Free is a Windows software program that can check the life expectancy of a solid state drive. It interprets the SMART data of the drive. The free version of the program supports only one connected SSD. If more than one drives are connected only the first will be analyzed and displayed. - gHacks
You install, and it gathers SMART and TRIM data (depending on the SSD’s age and make). You can learn exactly how the Life Expectancy is calculated here: http://ssd-life.com/eng/how.html
As more data is written, the disk becomes more accurate in calculating it’s life expectancy (the software just collects and displays it on its interface.
The deluxe/full version costs $19, and might be worth it for folks with more than one SSD. The free version as I said will only show the first SSD it encounters.
Source: http://www.ghacks.net/2011/11/05/ssdlife-free-show-life-expectancy-of-solid-state-drives/?_m=3n%2e0038%2e330%2ehj0ao01hy5%2ec17
Download link: http://ssd-life.com/index.html