the mesh on the left is high poly. look at its face. those lines are all the polygon edges. the mesh on the right is low poly.
Really? I just wanted a nice looking render. What should I use instead? Blender Internal doesn’t look good- or either I cannot use it, so I’d appreciate a link on setting it up
assuming the normals are facing in the proper direction and all that, and if it’s high poly you should be able to eliminate most of the artifacts by turning up the hemires, if i recall correctly. just don’t turn it up too high, or you’ll have to wait awhile for the render.