I have an x6 1035t system with 16 gb ram and have very long render times in Vue with fairly simple scenes. The task manager shows all cpus at 100% during renders. Render times are long (over 24 hours) with 3200 X 2400 high res renders. I think my video card may be a problem just using the program as it is a radeon 5750, and I understand that you are better off with nvidia.