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These two chips from Texas Instruments (TI) ensure IEEE1394/FireWire functionality.
The heart of the RT2500 card is the C-Cube DV Xpress MX. This chip plays video streams and effectively takes up some of the processing load away from the CPU. The Flex 3D is responsible for effects.
You see in this screenshot that, in addition to the C-Cube chip, Matrox's G400 graphics chip lurks just under the heat sink. This chip provides TV-out features for the television monitor. It is not, however, used as a standard graphics chip.
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