There is a graphics card with hdmi output:
sapphire radeon x1600 pro
http://www.theinquirer.net/?article=28838
It also has a sound circuit.
And also this year there are coming such cards from NVIDA and others..
HDMI->DVI adapters many times means you have quality problems if
the cable is longer for example 10m.
A HDMI-HDMI cable can be of arbitary length.