I have that laptop ( i think, or the 1705) and just finished Far Cry just fine.
I also have AH installed with all settings on max.
It does have the PCI-E 256 Mg vid card so it will push a lot of stuff. I was a fool and did not buy the upgraded monitor, so I can only go to 1024 x 768. but on those resolutions, I had everything on Far Cry maxed out.
I love the laptop, highly recommended.
The only thing I would do is msconfig out all the pre-installed stuff Dell puts on there.
Hope that helps
**EDIT**
I do have the 1705 with a 17" inch monitor, and the X1400 vid card, not the X1300
For the Price, I would recommend spending a bit more.
And they start at 939. Make sure you get the gig of ram, X1400 vid card and the upgraded screen, you won't be disappointed.
DELL