Go to dell, they sell the best machines on the planet. Any dell computer can run any game on max settings. I know this because God personaly blesses every dell computer with a long high performance life.
My dell that I bought 7 years ago kicks serious but and runs BF2 at 100+ fps.
My dell is nothing more than a table for my speaker. Dells are only good at takin up space.
BTW can you give us a budget? So we can come up with parts.
CompTIA A+, CompTIA Network+, Cisco CCENT, Cisco CCNA Routing & Switching