I think they were dropped because they used DX9 to run the work units. Now Stanford wants to use AMD's CTM and nVidia's CUDA as they're a good bit more efficient. I think that they X1900 series (GPU1) client was really just a test. I just wish that they'd told people that when they started it. Quite a few got burned by it and aren't exactly wanting to rush out and buy nVidia cards for their farms because of that.