What I found is that the several latest BIOS of GX70 3BE they might have disabled the SATA3 mode accidentally by the engineers. or may be the default settings they've changed from SATA2 to SATA3. I tried the previous 309 BIOS for win7 and 706 BIOS for win8, they all work fine for SATA3 performance. Software also shows that it is connected with SATA3. however all other latest ones they simply use SATA2 instead of SATA3. I know HDD has no interference for these two SATA mode, however running with a high performance SSD makes the different. Wonder if someone can test that and maybe with a unlocked BIOS so that we can change the default settings?