Hello I bought a Corsair GT Series 3 Sata 120GB, i plug it into an Asus P6X58 Premium board, with a marvell Sata 6 gb/s driver. He did the HD Tune pro 300 test, but it writes less mb/s. I cant't understand it. Because this model have a reading speed of 555 mb/s - It have to write 515 mb/s. How can I do. Thank you.