Heffeque, Based on the article, as long as the card can understand nVidia's CUDA programming language, it should work. Whether PandeGroup provides a Mac installer to go with a Win installer is up to them.
Everyone, please note that the performance specs they're quoting in the article (and in Vijay Pande's response above) are based on the new GPU nVidia is releasing next week. Those of us with the older GPUs will not have the same performance boost but it still should be much better than the SMP or single core clients.