My quad core PC cost me 565 pounds for a 9550 core 2 quad, 500GB HDD and 4GB RAM and a few othur thingz. Then you add on the Zotac GTX 275 at 255 pounds which takes me up to 820 pounds , plus a 50 pound soundcard (asus xonar D1) and another fan at 10 pounds , which leaves me comfortably at 880 pounds , still cheaper than a Alienware even if I add in the flashy lights and stuff.
It's a brand name, a label. Thats what you pay for. (and yes, the pound sign on my keyboard is broken)