That card has been much maligned by many, but in my 466DA, it does 1080p at 24bit w/o breaking a sweat on my HP 2X.X 1080p LCD Monitor (with HDMI input!) and the monitor displays all my old Mac's screens letterboxed on the sides VERY clearly scaled to 1080 x Whatever at the proper aspect ratio.
The only irritating thing I've found about last summer's ubuntu netbook remix is that the Mini did 720p on the 32" LCD TV upstairs running under WinXP Home3 just fine, but ubuntu won't do 720p or 480p (which the TV autoscales to 720p), so it's less clear in the resolution ubuntu offers than it was runnin' under the Crud Creeping outta Redmond. =8-P