i would really like to try the AMD driver, the problem is that windows just won't let me install them. I suppose the problem is the following:
The device class of the MS driver is "IDE ATA/ATAPI controllers" (Class GUID 4D36E96A-E325-11CE-BFC1-08002BE10318) and the class of the AMD AHCI SATA driver is "SCSI and RAID controllers" (Class GUID 4D36E97B-E325-11CE-BFC1-08002BE10318)
I'm not quite sure why this is the case. I wonder if it is possible to modify the *.inf file (AMD driver) or the registry (MS driver) to make them matching.
It's strange, because in Winxp x64, I had no problems installing the AMD driver.