As far as I know, the current Intel chipsets don't support 6Gb SATA or USB 3. Those features are added by third-party controllers on Intel-based motherboards.
The forthcoming "Sandy Bridge" chipsets are supposed to bring 6GB SATA, but not USB 3.
I'm unfamiliar with current AMD chipsets. I see that the 890 does 6GB SATA, but it looks like USB 3 not native.
I trust that somenone will jump in with corrections if my information is incorrect or misleading.