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SATA hard disk speeds

Serial ATA

Version commercial name theoretical performance real performance
SATA 1.0 Serial ATA-150 1,5 Gb/s (192 MB/s) 1,2 Gb/s (150 MB/s)
SATA 2.0 Serial ATA-300 3 Gb/s (384 MB/s) 2,4 Gb/s (300 MB/s)
SATA 3.0 Serial ATA-600 6 Gb/s (768 MB/s) 4,8 Gb/s (600 MB/s)