there is a world of difference between the two specs you listed !!
like comparing an SUV to the Hummer
thats one rocking spec on the Sager; I am in awe they were able to get those components to work in a laptop >>>>> you should be able to use it to dry your hair and heat your dorm room too !
the heat that comes off that video card is noticible !
if you are a serious gamer; the Dell spec is a dud as is ???
I would opt for a desktop computer myself / then you can work on it and upgrade it in the future, there is no practical working on laptops really /
and how much will you really be toting that laptop ????? not to mention gaming on a laptop screen is
less than desirable