Does anyone know with confident (perhaps from actually having a setup already) of a Mac PCIe mainstream GPU that supports at least triple display? If not mainstream; than professional series? I currently have a 2009 MacPro with triple display out of 3 GPUs (nVidia GT120), I would like to recover 2 PCIe back by upgrading to 1 GPU that supports 3 displays and put a USB3.0 and SATA 6G instead. UPDATE: I was able to remove 1 GPU, and get a miniDisplay -> DVI cable to get 3 displays out of 2 GPUs. Still would like to reduce it down to 1 GPU.