In my research the majority of high end system builders have gaming and graphics in mind when choosing parts. I need to build office computers where graphics and gaming don't matter BUT I want the fastest computer for running email, office apps, accounting software, internet (usually all running at the same time). What processor should I get? And motherboard? Money is not an object, but if the only difference between 2 processors will be performance in graphics and the graphics one is $200 more, it's not worth it. Thanks.