New
#21
There is a difference, but I doubt you will notice it one way or the other. If we can assume (which I'm pretty sure is true) tha Nvidia chipsets do not have AHCI, but you have 1 port with AHCI enabled and have an AHCI driver, it should be safe to assume you have an AHCI driver for that port. In this case it is Microsoft's, which is not that bad. I would assume that the port is specified in your manual for your motherboard and that there is a driver for it on your motherboard's web site. But, it is not that important as you already have one.