Are the read/write of SSD real?

Some SSD have a specification of read:550 MB/s and write:520MB/s. Are these speeds theoretical or is that the real speed most of the time when you are reading and copying large files like HD movies.
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  1. Yes they are real. In terms of real world performance it may be under that by just a bit. It comes down to compressed data vs incompressed data. And you have to use SATA 3 ports to achieve those speeds.

    These are the benchmarks from last year 2011, they don't have a 2012 version yet:,129.html

    You can take a look at the read and write benchmarks (MB/s).
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