I regret to say that I have been forced to slow down and maybe stop rendering with my equipment. The Nividia card which I have is very unstable, and is overheating the entire unit. I have been cautioned by "techno-geeks" that I am lucky that I didn't actually catch it on fire. I am seeking a different kit to render with, but a laptop and a Nividia card in a laptop is unsatisfactory, at least the 3GB card I have has proven to be. It ceases responding and screen goes black, and gets extremely hot. I have pushed hundreds of renders through it.