System model?

Dell System XPS L502X

I forgot to say that i bought this:

1 225-0675 XPS L502X (Direct)

1 312-1185 56 WHr 6-cell Lithium Ion Batt (L502X)

1 317-6414 6GB,DDR3,2 DIMM, 1333MHz (L502X)

1 317-8378 Intel Core i7-2670QM 2.20 GHz

1 318-0138 JBL 2.1 Speakers with Waves Maxx Audio 3

1 318-0392 Windows Live Wave 4, CNB

1 318-0427 8X DVD+/-RW Tray Load Drive

1 318-0434 Roxio Creator Starter, FI, CNB

1 318-0490 Elemental Silver Aluminum (WLAN) L502X

1 320-1672 15.6HD TLF WLED LCD L50xX

1 320-2120 NVIDIA GeForce GT 540M 2GB US (L502X)

1 330-6222 Windows 7 OS Label,CNB

1 331-1674 Resource DVD (L502X)

1 331-2465 Backlit Internal Keyboard - Spn (L502X)

1 331-4194 Mexico Energy Label

1 342-2370 750GB 7200 RPM SATA Hard Drive (L502X)

1 410-0487 MICROSOFT OFFICE STARTER 2010,CNB

1 410-0548 ADOBE ACROBAT X READER MLANG,CNB

1 410-0572 MCAFEE 11, 30 DAY, CNB

1 420-6436 PC-RESTORE, DIM/INSP

1 420-6576 DELL WELCOME,SW,DIM/INSP

1 420-9691 DATASAFE LOCAL BACKUP

1 421-0092 DELL-DOWNLOAD-FLAG

1 421-0757 SKYPE VOIP SOFTWARE APPLICATION,CNB

1 421-3642 Basic Stage, CNB

1 421-3867 SW,LOJK,STD,1YR,LTN, LA/BZ

1 421-3874 Camera Software 2.X, Factory Install,CNB

1 421-4060 Fast Access 3.0 F/R App no Kit, CNB

1 421-4289 DELL SPRT-CTR SW 3.0

1 421-4736 Wireless Display Software (L502X)

1 421-5785 Win 7 HP 64 SP1,SPN,No Med,LAC,CNB

1 430-3893 No Mobile Broadband L501X

1 430-4038 INTEGRATED NIC

1 430-4047 Intel WLAN-N 1030 and BT 3.0 (L502X)

1 916-1247 NO WARRANTY YRS 2-3 (NBD) LA/BZ

1 929-1859 Lojack, 1 Yr Absolute Software, LA

1 916-2260 ACC DAM SVC,XPS NB, 1YR LA

1 937-9262 HW WRTY + SVC, XPS L502X,UNY,INIT,LA

1 937-9312 BASIC NBD OS, XPS L502X,UNY,INIT,LA

so.. why my graphic card doesnt appear when i type dxdiag : DirectX Diagnostic Tool/Display? I´ve choosen Nvidia Graphics but still saying that my display´s device name is INTEL (R) HD GRAPHICS FAMILY

should appear Nvidia graphics? doesn´t it?

but in my other laptop appears Nvidia Graphics (is not a dell)

No, because ALL the video in the system - nVidia or Intel - is funneled through the on-CPU Intel video circuit.   To any diagnostic, that's what will appear.

well i dont know what you meane..  i bought online with dedicated nvidia graphics,,and  i´ve choosen nvidia processor high performance in the control panel..

where can i see that i have my nvidia graphic card installed?

It depends on the type of graphics - is it dedicated nVidia as opposed to hybrid?

Thanks for replying.

No, it won't.  There's no way to disable the Intel video.

i bought it thinking that i was buying it with a  dedicated video, would it work as a dedicated video?

or isn´t too good as one

its a way of making more sales to say "dedicated graphic chip on board"  this could easily be misunderstood as having dedicated graphics. I see many laptops using this type of spin to sale systems. The hybrid systems has got cooling issues when trying to play new games on just the graphic processor high performance.  

Just about every notebook these days has hybrid video -- except for the very high end of the market with top of the line gaming systems and high-end workstations.

As for cooling, no -- not all systems have trouble with games -- however, there ARE systems that do when they're pushed into games they're just not designed to handle.