Good news to P35-DS4 owners.

I wrote to Gigabyte support because I have a problem when I start my computer. When system scans HD's I see a message that says AHCI BIOS Not Installed.

In a week they response to me to try a new BIOS: F5d. The problem continues but I have a huge improvement in memory performance in Everest with this new BIOS.

With F3 I had 8600 and now, with F5d I have 9500

Anyone know why bios shows AHCI BIOS Not Installed ???

Thanks !