Intel is so confident in their new Intel 320 series solid state drives that they are extending the warranty from three to five years. The 320 series use 25 nm NAND flash memory, and have a claimed MTBF (mean time before failure) of 1.2 million hours.
According to the new warranty, Intel states that: "if the Product is properly used and installed, it will be free from defects in material and workmanship, and will substantially conform to Intel’s publicly available specifications for a period of five (5) years beginning on the date the Product was purchased." Naturally, it does not cover physical or other accidental damage. As SSDs are still relatively new technology, it is hard to gauge reliability in consumer systems over the long term, so it is nice to see that Intel is confident enough in it’s 25nm flash technology to extend the warranty. Hopefully, this will influence other manufacturers to adopt longer warranties. You can read the full warranty details here.