I have an ASUS GTX 660 Ti (TI-DC2O-2GD5) that plays nicely with X2a. It has 4 outputs (HDMI, Display port, 2xDVI). Yes, it has fans, but I can't hear them. Among fanned GPUs, Asus DirectCU-II fans have been reviewed as the quietest. Plus the DAW uses peanuts in terms of video demand, so the GPU fans don't really have to throttle during use.