Intel GMA 4500m HD
Integrated Intel GMA 4500MHD 1.7GB
Nvidia GT 335m
GeForce GT 335m 1GB
Latest Drivers here:
M11x R2 Available GPUs
Second revision of the m11x model, it presents a decent GPU nvidia option which can handle some OC.
Intel card for power save options and no temps issues.
No Dells part numbers since both cards are integrated with the motherboard.