I had a local computer store build mine with my spec for £1000 less than what Dell could do it for, and yes they did use all new stuff and top of the range gear, not crap.
Shop around before going with Dell, they're not that cheap and I've heard bad things about their support, RTB and all that crap could see you without a 'puter for weeks, whereas the local store is just down the road!!

Don't forget Poser still won't use all that RAM because it's still a 32 bit prog apart from the render engine in my understanding!
All that RAM though, good excuse to get Vue as well!!..........that can use all the RAM because it's true 64 bit app!!

Injustice will be avenged.
Cofiwch Dryweryn.