Anandtech
"The reference motherboard is very simple; you’ve got an Intel Atom CPU and a GeForce 9400M next to each other, a single SATA connector and a
DDR3 SO-DIMM slot on the other side of the board. And this little thing is powerful enough to play HD video (8 - 25Mbps H.264):"
http://images.anandtech.com/reviews/.../Ion/specs.jpg