Okay so i've recently been lurking around the SoftTH forums, where the developer there has started implimenting nvidia's CUDA engine in to the application, that has in all cases increased the framerates of rendering considerably, in SoftTH's case it basically renders the content of all three screens on one card, and uses the memory bandwidth of PCI-E and a second card (can be a really slow card as long as it's PCI-E), as a slave to render one, or two of the screens data to.
Now, CUDA support has only been included very recently with Nvidia drivers and it may not be something worth including due to the restrictions (obviously, needing a GeForce 8 or higher graphics card), but if implimented properly i think it'd provide quite a nice increase in speed.
Wiki : http://en.wikipedia.org/wiki/CUDA
Nvidia's site : http://www.nvidia.com/object/cuda_home.html
CUDA forums : http://forums.nvidia.com/index.php?showforum=62
Developer signup (free) : http://developer.nvidia.com/page/registered_developer_program.html
Would at least be worth a look.
Now, CUDA support has only been included very recently with Nvidia drivers and it may not be something worth including due to the restrictions (obviously, needing a GeForce 8 or higher graphics card), but if implimented properly i think it'd provide quite a nice increase in speed.
Wiki : http://en.wikipedia.org/wiki/CUDA
Nvidia's site : http://www.nvidia.com/object/cuda_home.html
CUDA forums : http://forums.nvidia.com/index.php?showforum=62
Developer signup (free) : http://developer.nvidia.com/page/registered_developer_program.html
Would at least be worth a look.