Comment Go with NVIDIA (Score 1) 278
After weeks of trying to get AMD/Gigabyte motherboard and video card to drive 4 displays on linux, it just didn't work.
Tried 3 different distros, god knows how many xorg confs and driver combinations.
In the end I broke down and bought a NVIDIA GTX 760 for the following reasons.
*Drive 4 displays in Linux no problem with HW Acceleration.
*4 displays can be driven at 1920x1080.
*OpenCV has Cuda support , nothing for OpenCL yet.
*Openscenegraph has Cuda library, nothing for OpenCL yet.
*The Nvidia settings manager actually works.
*Xrandr is is working correctly.
I am happy now, it just worked. I want to tell NVIDIA **** you also about the linux/drivers