Well, both #1 and #2 use nVidia's ION based chipset and their driver does support custom resolutions. I'm using it with an on-board GeForce 7100 (which uses the same driver) and was able to get 800x480 set and displayed fine when the utility tested it, but then that resolution does not show up as selectable in my list of resolutions. If I go back to custom resolutions it's still there. So I haven't been able to set this resolution for my Xenarc, even though both the GPU and the screen both support it. I can't be certain, but I believe the Intel does support 800x480 out of the box. Hopefully someone else can answer that for you.