Zotac IONITX-A-U Atom N330 Dual Core 90-Watt PSU WiFi ITX Intel Motherboard (11/24/2009)

Price: $115.99

Technical Details
ION's 16 high-speed stream processors
NVIDIA PureVideo HD technology
Blu-ray playback
D-Sub + DVI + HDMI
Mini ITX Board

Product Details
Product Dimensions: 9.6 x 1.4 x 9.6 inches ; 1.5 pounds
Shipping Weight: 4 pounds
Shipping: Currently, item can be shipped only within the U.S.
ASIN: B002BA5IHC
Item model number: IONITX-A-U

Reviews:
This is truly a great board. It has all the features you want in a HTPC board and then some. Admittedly I'm running Windows, but it does "just work" as far as all the connections go. And full screening a blu-ray video with the right software is flawless. I don't use any fans and heat is not a problem.

Wake on USB is great as well. When you put this guy to sleep it goes all the way down, no sound no lights. Then your wireless usb mouse or keyboard wakes it right up. Yay.

Only thing I really wanted that isn't perfect is full screen flash video, such as Hulu. These services are heavy on the CPU, and at 720p resolution for the desktop and Hulu set to a 420p video, the CPU maxes out and the video is a bit choppy. Not quite watchable actually. So I usually have to drop Hulu to 360p. Or you could lower the desktop resolution down when watching Hulu.

That's the only complaint. Overall a really really great HTPC board.

Got 4 gigs of RAM and a WD 1TB Caviar Green.