f you’re trying to keep up with the Joneses in PC gaming, Alienware’s Area 51 Gaming PC($3,999 and up) is tough to beat. Housed inside one of the company’s trademark love-’em-or-hate-’em “futuristic” cases, this rig is decked out with some of the best components money can buy: Intel Core i7 975 Extreme processors, your choice of ATI CrossFireX or NVidia SLI graphics graphics cards (making it great for the 3-D gaming with Nvidia’s 3-D Vision Kit), and plenty of memory to keep things running smoothly). Oh, and it uses a fancy liquid cooling system to keep all this stuff from melting down inside. it’s a hefty price to pay, certainly — fully tricked out, this thing will set you back nearly as much as a small car, but the benchmarks are right up there near the head of the pack. And hey, you can’t shoot nasty, earth-hating aliens with a Hyundai Accent, can you?