With all of the advanced features of P6 there is no "one all render setting". Each scene will be different. For starters, when you get ready to render use the Manual settings and use the lower settings. Objective... get it to render first. Then you will have to bring up a setting at a time until you find the one causing grief. Your final render is not directly related to your video card. I still use a NVidia MX440 with 64MBRam and it just chugs along.

I must remember to remember what it was I had to remember.