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kekster

macrumors newbie
Original poster
Sep 2, 2010
2
0
Hi guys,

for work-related reasons I need a second external monitor for my Macbook. I do know that you can't plug in a second monitor but i found the "Matrox DualHead2Go". With this device you can use one input from the Macbook and split the output to 2 monitors with 1920x1200 pixel each. The Macbook thinks that it is one big monitor with 3840x1200 pixel. I guess many of you may know the DualHead2Go.

My questions:

1.) Does my graphics card work with such a high resolution? On apple.com it says "up to 2560 by 1600 pixels on an external display". But that would only result in 2 monitors with 1280 pixel width each. Is that correct? Is the graphics card not able to go higher?

2.) If it should work: is the Macbook fast enough to output 3840x1200 pixel? Would the CPU always run at 100%?

Info: I have the current Macbook Pro 13" with 2,4 Ghz Core2Duo, 4GB Ram and GeForce 320M.

I would really hate to switch to a larger Macbook or to a stationary Mac like the Mac Pro or iMac. I still want to be mobile without always synchronizing my work on both Macs.

Thank you (& sorry for my englisch)
 
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2.) If it should work: is the Macbook fast enough to output 3840x1200 pixel? Would the CPU always run at 100%?

it will use a lot of RAM since you have the 13" but other then that your fine :) - you shouldn't see any slowdown unless you are going to be running some graphics intensive applications.
 
Back in the early 90's when video cards didn't included 3D acceleration, You were required to have 4mb of video ram to run a single 1600x1200 display. So you should be good.
 
It will use 3840 x 1920 x 24-bit = 13.18 mb

Apple's 30" Cinema Display nearly has as many pixels and needs to be run over a dual-link DVI cable to support the full bandwidth. Other than that it's more a question of whether OS X allows so many horizontal pixels.
 
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