SolidWorks 2014 Professional 64 bit
Core I-7 2.8GH quad core
Does the final render window need to be always on top? It can be minimized so other work can be done, but does that slow it down? It's using almost 90% of the CPU, with the rest being used by Internet, e-mail, SolidWorks in the background of course, plus background stuff. It's taking over 30 minutes to render a simple assembly, using Maximum quality.
Use Best Quality, the time difference is huge but you will hardly tell the difference in image quality.
I have dual 6-core Xeon CPU's and it still takes some time to render a 4000x3000 pixel image with Best quality. Silver material adds significant time to the render.