My MoBo is only 2 years old (Gigabyte MA790GS-DS4H, PCIe 2.0, AHCI, Phenom II X4 cpu) but only has Sata-2 ports. I bought a Corsair Force GT 120gb SSD drive last November and wanted to take full advantage of its speed, so I bought a PCIe x1 Sata-3 card (ASMedia ASM1061), which arrived yesterday. I ran ATTO before and after so I'd be able to see if there was any difference.in performance: With the GT plugged into the MoBo's sata-2 port-0: http://www.outlawwebdesigns.com/images/My_ATTO_sata2_results.jpg Plugged into the sata-3 card with the MoBo AHCI mode DISABLED (the card has its own AHCI mode): http://www.outlawwebdesigns.com/images/My_ATTO_sata3_ide-results.jpg With AHCI mode on the MoBo enabled: http://www.outlawwebdesigns.com/images/My_ATTO_sata3_ahci-results.jpg My reads speeds with the card are great (35% increase), but my write speeds fell through the floor (down as much as 80%). Any idea why? Help! Thx.