Vista - ATA/ATAPI: IDE Channel and ATA Channel

Hello,
I have a laptop which was pre-installed with Vista Business 32-bit. At that
time, the IDE ATA/ATAPI controlls in the device manager showed the driver for
the channels as two ATA Channel 0 and two ATA Channel 1.
I have now reinstalled with Vista Ultimate 64-bit. Now these channels
instead are shown only as four IDE Channels.
The drivers are currently standard Microsoft drivers, and I'm pretty sure
they also were that before.

I have installed all Intels drivers for the different controllers, but that
had no impact on the channels drivers. I have also tried the built in
auto-update for the drivers on the channels, but Windows say that are correct
and up-to-date.

As it would appear, both the current drivers and the previous listed as
ATA-channels both came from ATAPI.sys.

I can't figure out if this would have any impact on stability or performance
for the channels?

Is there anyone that can confirm that these drivers are OK, or should it
rather be the "ATA Channel" instead?

Thanks for any help!