genardas :
Are you sure the alienware is good to buy? I heard you could get gaming laptops same price for different brand but I couldn't seem to find one with good specs. Anyways anyhelp would be good
I only recommend alien ware because it has a good warranty.Building a desktop is very simple, but you have to be cautious as the parts are sensitive to static.
But for $1400 you could get a system with:
Core i5 3570k CPU
8GB of DDR3 1600 RAM
GTX680
Z77 Motherboard with PCI-e 3.0
OCZ Fatal1ty 750W Modular Gaming Power Supply
$80 Full Tower Case
1TB HDD
or
Core i5 3570k CPU
8GB of DDR3 1600 RAM
GTX670
Corsair H70 all in one water cooler
Z77 Motherboard with PCI-e 3.0
OCZ Fatal1ty 750W Modular Gaming Power Supply
$80 Full Tower Case
1TB HDD
These specs listed above are about 2-3x faster than any gaming laptop for your price.
A gaming laptop is not future proof for games. It will start to slow down on newer games in about 2-3 years, a gaming desktop with good specs, like listed above, will last you a good 7-8 years. Laptops are also almost impossible to upgrade after so many years, a desktop can be upgraded ever 2-3 years saving you hundreds of dollars. Laptops overall are just not good for gaming.