There are several other GPUs which may also work. Please test thoroughly before using an unlisted graphics card. ToolsOnAir offers no support for unlisted graphic cards.
The just:live/just:play user interface can be operated on any Mac which supports the minimum system requirements as long as the just:out engine is running on a hardware listed above.
We have seen screen-sharing (remote) applications change the screen resolution. Please test your solution before going on air.