^^
well, DELL's offering that kid of resolution coz the nVIDIA GPU will be able to handle the said resolution smoothly..

so it wont be a problem.
U will be able to play games on that reso, but even if u are NOT, then the gpu will allow the display to represent the game at a stable and lower resolution

so here also u wont face any problem..
but, get a good amt of RAM for ur LAPPY..

and please have a look at the findings for GPU below for DELL lappys..

i found it out..
the INSPIRON SERIES:
1.) Inspiron 1525: comes ONLY with Intel Integrated Graphics Media Accelerator X3100
and even the customisation option has NO other option to change this card.
2.) Inspiron Mini 9: comes ONLY with Intel Integrated Graphics Media Accelerator 950
and with NO customisation
3.) Inspiron 13 & Inspiron 14: comes ONLY Intel Integrated Graphics Media Accelerator X3100
and with NO customisation
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the STUDIO SERIES:
1.) Studio 15: comes ONLY with 256 MB ATI Mobility Radeon HD 3450
and the customisation has NO other option to change this card.
2.) Studio 17: comes ONLY with 256 MB ATI Mobility Radeon HD 3650
================================================== ===================
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================================================== ===================
the XPS SERIES:
1.) XPS 1330: comes with Intel Integrated Graphics Media Accelerator X3100
and the customisation option has ANOTHER option of a 128MB nVIDIA Ge Force 8400 M GS at an added cost of Rs.4281/- (replacing the X3100)
2.) XPS 1530: comes with ONLY 256 MB NVIDIA® GeForce® 8600M GT
3.) XPS 1730: comes with Dual 256 MB NVIDIA GeForce 8700M GT graphics with NVIDIA SLI Technology
and the customisation option has ANOTHER option of a
Dual 512 MB NVIDIA GeForce 8800M GTX graphics with NVIDIA SLI Technology at an added cost of Rs.28,050/- (replacing the 256 MB 8700M GT)
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Cheers n e-peace...