I'm planning on getting an Intel Core 2 Quad Q9650 3.0 GHz 12M L2 Cache 1333MHz FSB LGA775 Quad-Core Processor and I don't know if a video card help any even with things like memory type, interface, size, and max resolution.
Assuming the PC is built for gaming, a Video Card is far, far more important than the CPU and RAM combined. All the CPU and RAM needs to do is make sure the GFX card gets the necessary data on time. As long as the other components are fast enough to "feed" the GFX card, the GFX card becomes the limiting factor in gaming.
If the system is not for gaming (in which case, why a Q9650?), almost any decent GFX card will do.