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What is the maximum bus speed of DDR2-1066?

400MHz

533MHz

DDR2-1066 refers to Double Data Rate 2 memory with a maximum transfer rate of 1066 MT/s (mega-transfers per second). MT/s is different from MHz (megahertz), which is the clock speed of the bus. In DDR2-1066, data is transferred twice in one clock cycle, resulting in a MT/s rate that is twice the clock speed (1066 MT/s = 533 MHz). Therefore, option A (400MHz) and D (800MHz) are incorrect as they are only half of the correct MT/s speed. Option C (667MHz) is closer, but still not the correct answer.

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667MHz

800MHz

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