The boards are connected to each other with 10 pins. The traces run through some resistor structures and voltage regulators. We are waiting on a confirmation from Nvidia on what these 10 pins are actually for.
Each PCB comes equipped with 512 MB of frame buffer memory. Although the 2 GB of total memory sounds like heaven for extremely large textures, each core uses its own memory, so this is the same as any traditional graphics card and SLI setup.
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