from http://www.apple.com/macbookpro/specs-13inch.htmlGraphics and video support
Intel HD Graphics 3000 with 384MB of DDR3 SDRAM shared with main memory5
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on an external display, both at millions of colors
FaceTime HD camera
That's weird! Graphics don't get any worse than the GMA 950 in my old macbook.Hmmm... Mine doesn't work.
When I hook up an external monitor, the GPU switches from internal to the discrete.
When I manually switch it back using gfxCardStatus - the external goes blank and won't switch on for anything!
Can someone with a new quad core Macbook 15" or 17" verify this? Can you run an external monitor off of the integrated GPU?
That is not possible. The 15" and 17" will always demand dedicated graphics if you connect an external display to the MiniDP.So I guess it wouldn't be possible to power the external monitor only (and disable the MBP screen) and thus make it work with the integrated GPU?
Just tried it out. If you force integrated before connecting a monitor, it will not work when you plug it in.If it were to work at all, one should first set the GPU to integrated using gfxcardstatus, then try to connect the external display.
If the iGPU has no connection to the external port, then it is not possible. If it is software driven, then maybe it can be hacked to work in the desired way.
Because the whole notebook stays a lot cooler and the Intel GPU is perfectly capable of handling two monitors with normal 2D stuff.Is there any reason someone would NOT want the AMD video card to kick in? Why does it matter? Not challenging at all, actually asking because I'm curious.
So even if I just connect one of the few storage devices using TB to my 2011 MBP, the dGPU should/will be activated?it is impossible to do this on a 15". The only card that has access to the TB port is the AMD dedicated card. That's the same reason why you need the AMD card enabled to do anything with the TB port.