A real dxdiag report would have been more helpful, but for what I could read your dad is running the game on built-in Intel Graphics, "the chip". I'm not quite sure whether it's physical whereabouts is inside the processor or on the motherboard, but anyway it's a part of the system. There's actually no better "chip"...
What you can and should do, is to get a real video card. That would bypass the chip for much better gaming performance. Depending on the new video card you might also need a more powerful PSU to power the video card. I suppose the Dell doesn't have any dedicated 6 or 8 pin GPU power cabling in its PSU, either.