HAHAHAhahaha, jeesh, mind blowing, from a 4850 to 4870 LOL, will be overpriced just like the rest of the xps line.
granted their laptops are not bad value for money (take the studio 17 line) but seriously, dell for a high spec gaming machine, no head over to rock or another performance builder if you cant do it yourself.
I mean, yes go with x58, yes i7 but for goodness sake, 1 yes ONE pcix16, youre having a laugh Dell LOL The case is a mess, definately restricted airflow, crappy cooler, no doubt dell revised bios (goodbye overclock) and possibly the worst cable management on any high end system ive ever seen yet.
No dell stick to budget quality for the masses and leave the custom rigs to alienware, thats why you bought them out anyways isnt it!