This has been discussed at length in the past
What do you have against Dell, bsphil?
. Read through that thread and you'll understand why buying prefabs is ill advised for a gaming machine.
To the OP: Whether or not your system will run it depends on what pieces you're getting. What CPU? What GPU? Also, you should know that Studip XPS systems have 350-425W PSUs which are on the low end for the types of GPU you might want (I wouldn't advise buying anything lower than a 5770, and I wouldn't advise a 5770 on anything less than a 500-550W).
Short version: Unless you have a 20% discount just for buying through Dell, you're paying them 15-25% more than what the parts are actually worth with a warranty that is voided if you try to overclock anything or tinker with stuff. They also tend to include cheaper power supplies and RAM to offset the costs of the system.
For gaming, here's what you want, and in this order:
- A really good GPU
- A really good CPU
- A decent amount of RAM
Here is what prefabs try to sell you, unless you pay extra to customize it:
- A HD way bigger than you'll ever need
- Mediocre off-brand RAM, usually way more than you'll need
- A low end PSU
- A decent CPU
- A low end GPU
Read over the thread I linked; there are specific examples cited point by point where comparisons between what Dell offers at a given price point, and what it's REALLY worth versus what they're charging, and what you COULD be buying for the same price. And while I do tell people to build systems themselves, you don't -have- to build it yourself to save money; there are companies out there who will give you more customization options than Dell/HP/Gateway/etc will, and will charge you a far smaller "build markup" with the same or better warranty and service because you aren't paying for the "Name Brand".
I strongly advise reading through that thread I linked (don't bump it though; old thread is old) before making a purchasing decision. Edited, Oct 1st 2010 5:56pm by Mikhalia