Confirmed: Apple Can Enable Dual GPU and On-the-Fly Switching in MacBook Promatt buchanan10/22/08 8:40pmFiled to: MacBook ProMacBookNotebooksLaptopsGraphicsGeforce 9400mGeforce 9600m gtCardsNvidiaAppleVerizonbestmodo92EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkNvidia dropped by today to demo some of the awesome things that the GeForce 9400M in the new MacBooks can do that Intel's integrated graphics just can't touch, and to discuss a few technical points. Besides confirming that you'll see it in other notebooks soon, they definitively answered some lingering questions about the chip's capabilities: It can support up to 8GB of RAM. It can do on-the-fly GPU switching. And it can work together with the MacBook Pro's discrete 9600M GT. But it doesn't do any of those things. Yet.