I have just replied to xpabl0b 's PM as so:
Hi
What I posted was correct as far as my experience with the Z68X range of motherboards went. However after you querying it I checked on some other boards in the range and it would seem that they have used more than one Marvell chip across the boards.
Some boards do utilise the 9128 chip but I would still think that it would work alright now as Gigabyte would hardly make the same mistake again on motherboards a couple of generations further on.