New MacBooks to be based on NVIDIA GeForce 9400 / 9300 chipsets?

With a new MacBook announcement now just days away, speculation is unsurprisingly at a fever pitch as to exactly what Apple has in store, and the folks at PC Perspective have now pieced together a few clues to whet your appetite in anticipation of the big event. Most of those are drawn from mounting evidence from the NVIDIA camp, including the image above that made an appearance on the company's website a few days ago and, most importantly, word that NVIDIA would be releasing its GeForce 9400 and 9300 chipsets based on the MCP79 integrated chipset design on October 15th (conveniently not stepping on Apple's toes the day before). The implication there being that the GeForce chipsets would replace the relatively underpowered integrated Intel graphics on the current MacBooks, with the new MacBook Pros supposedly getting an additional boost from a discrete G92-based mobility GeForce 9600. As PC Perspective points out, if true, that would be quite a coup for NVIDIA, especially considering that it wasn't all that long ago some were talking about it quitting the chipset business altogether.