Is the GPU video card on Dell E6400 upgradeable? What kind of MXM?

I have Dell E6400 with nVidia NVS160M.

This is how E6400 base looks like:
http://support.dell.com/support/edocs/systems/late6400/en/sm/html/r-h-atga.jpg

I would like to know if the video card upgradeable?

 

If history is any indication, Dell is using a proprietary card format that similar (but not quite) to MXM. Don't even think about upgrading the card, it isn't going to happen.

 

as far as i know, the current E series latitudes just have the chip integrated onto the motherboard. so to "upgrade" you'll have to replace the motherboard, and since dell dosent have graphics higher than the 160m for latitude, ur pretty much stuck

 

afhstingray is right, the only way you can upgrade the gfx is by replacing the motherboard, and the 160m is the most capable one they offer.

 

I have the latitude E6400 with the Nvidia solution, and I can tell you that the GPU is soldered in and sharing the same heatsink as the CPU, and northbridge processor.
Yes you can play (using the Geforce drivers) todays latest games at medium low settings. I tried StreetFighter Benchmark (~50 fps), Resident Evil 5 Benchmark (~25-30fps), but that is a demanding game (even at lowest settings it's still quiet high in visuals) if you have a look, GTA4, the Witcher (medium settings), Crysis, Far Cry2 (medium settings), TeamForterst2 / HalfLife 2 and it's episodes and Portal (medium-high). Some game requires a little GPU overclock boost to have more smooth game player or higher settings, see signature for more detail.