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Step 18
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Top of logic board.
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The speakers are mounted on the left next to the ports.
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The heat sink covers the two NVidia chipsets and the processor.
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This machine has 512 MB video memory for the NVidia 9600M. The 9400M chipset shares 256 MB of system memory. You have to log out to switch between graphics chipsets.
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Step 21
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Left: 15" Unibody logic board
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Right: 17" Unibody logic board
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What's different? The biggest difference to you is the additional USB port. Oh, and $800.
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The low-end 15" board that we took apart in October only has 256 MB video memory (Samsung RAM soldered onto the board). The high-end 15" and this 17" have 512 MB video RAM.
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High-resolution photo of the logic board.
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Step 23
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We removed the display assembly.
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This photo is the 13", 15", and 17" MacBook displays stacked together. High resolution.
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