using Kalibox fragment and some useful tips from him
My own tips are.. If you are running on nvidia.. (I have a gt620) use your overclocker to bring your MHz upto around 1000 and you hardly get any crashes!
thanks..yeah I think it works best on Nvidias .. mine isn't the best but it runs real fast ..the longest time I have found yet for a render (with hard shadows,reflections) is 134 seconds and that gives me a 6mb jpeg!