Actually, as I said, as long as it is large enough. A 3000-4000 render will give you a fairly good quality image to print at....anywhere from 8 inches to 16 inches depending on the type of printer, inks and paper. I've done printing for years. If you mean you are clicking open GL in the settings, that is not the same as using the Speed/Quality slider. Slid all the way to the left is Open GL rendering. Slid all the way to the right is 3Delight. I don't use anything between. Open GL rendering will not do any raytracing.