[CaptainHaplo]

AHCI is used in SATA configurations - if your currently use IDE then you can't switch to AHCI as your drives are not SATA - they are EIDE.

The first question (provided you have compatible hardware) that needs to be answered is why do you want to switch? Is there some indication you have that you will get a performance or reliability increase?

In the case of AHCI - you are already using your OS. Switching to AHCI after the OS is installed is a real pain in the arse. About the only way to do it reasonably still requires an OS "repair" to be run to allow the OS to see your drives once you swap to an AHCI mode on the controller.

Honestly - this is one of those times that "new technology" (though it isn't really new) just isn't worth the hassle. Next time your doing a full system rebuild, make sure you have AHCI ready drivers for your controller and then enable it. Until then - I have to advise against it.

Your not really missing any "bang for the buck" in reality without it.