Primeiro driver a activar o modo Quad SLI no Windows Vista (com as Geforce 7950 GX2/7900 GX2 e com a rara 7800 GX2): 32bit: http://www.nvidia.com/object/winvista_x86_169.22.html 64bit: http://www.nvidia.com/object/winvista_x64_169.22.html