The drive's random read rate for light workloads (QD1) is 10,000 Input/Output Operations Per Second (IOPS), the best in the industry. Also, with Samsung's innovative TurboWrite technology, 840 EVO also dramatically boosts the sequential write rate. Multitasking is a simple job for this SSD, which can operate several tasks simultaneously nearly three times faster than an HDD. Whether it's a heavy workload like video file editing or a simple task like a virus scan, 840 EVO runs every job smoothly and quickly. Samsung's new 3-bit MLC NAND flash memory stores data more efficiently, increasing both speed and reliability. You do the math.840 EVO is significantly faster than a standard HDD, providing more rapid sequential and random read and write times for every task. Right now I myself use a 4-th SSD Samsung 840 without trim enabled. It's been 3 moths since, and they haven't returned since. After replacing them i hadn't turned on trim anymore. They both came back to me in a month and a half with a fired SSD. I just recently had 2 customers with a macbook that asked me to upgrade to an SSD. I can't really prove it, I my self, am a guy that needs hard proof, but this isn't a coincidence. Its not the laptop ( MacBook Pro 17" Mid 2010 I5, nVidia 330M ). If it were a motherboard problem, they would have found it. As I was saying, I work in a service, I have tech guys which are very good at what they do. As soon as I turn on trim, with in a month or so, my SSD dies. Cant really explain it, not an OS X expert. So I deal with a lot of laptops on a daily basis. Im at my 4-th right now ( thx God for warranty ). I fried 3 SSD Samsung 840 ( not the pro version ). The problem with the OS X Trim command it that it kills your SSD.
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