My comment will purely factual: I installed April 30th, 2013 a Samsung SSD 840 500 GB as disk data into my laptop of job. Last week, fatal crash of this SSD, which is no longer recognized overnight despite all tests (cable change SATA, use of a USB / SATA player, essay on 3 different PC, etc.). This SSD is simply death without the slightest warning (the eve, stopping the laptop was done without marigold). I am disgusted of the loss of sudden data on this disc. It had already happened me with a OCZ Vertex 1 and 2 Vertex 2, but I naively thought these reliability problems were circumscribed among OCZ. Short, to return to my Samsung 840, the crash of statistical risk was probably low, but I fell above. Bar Point. I also remark I intensely uses 4 Intel SSD (1x310, 3x335) as systems partitions on different PC since 3 years for the oldest ---> never any worry. I also use a SSD Corsair 180 GB in system disk since the beginning from year, No unsolicited more worry. Short, on this basis (and only on this basis) I disadvise the Samsung 840. I'm sure for a crash such as that that I have had, there has 100+ users happy, but think before you buy.