First, its not cheaper as paton showed. I just shopped Newegg since they're easy.
Paton got it down to $966, and it may be possible to go lower.
Second, you want this for gaming (though not intense gaming, granted)
For reference, on OCN's graphic performance list the HD6450 in the Dell is #104, while the HD6950 I suggested is #21 (list
If you need a monitor/keyboard/mouse that can be figured into the build and it will likely still come out better optimized than the Dell.
We can't read your mind though, you need to tell us what you're going to need.
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X