An SPU USES vector operations itself and can thereby execute up to eight floating point instructions per clock cycle.

SPU本身使用向量操作，每个时钟周期可以执行多达8条浮点指令。

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The POWER4 microprocessor collects a group of up to five instructions per clock cycle and can complete one group of instructions per clock cycle.

POWER 4微处理器每个时钟周期收集一组指令(最多有5个)，并在每个时钟周期内完成一组指令。

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The POWER5 microprocessor doubles that throughput by collecting two groups of up to five instructions per clock cycle and completing two groups per clock cycle.

POWER 5微处理器使此吞吐量增加了一倍，每个时钟周期收集两组指令(每组最多有五个)，并在每个时钟周期内完成两组指令。

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Things like the number of computer instructions per clock cycle, the bandwidth of the RAM bus, and the overall efficiency of the architecture are at least as important as the raw clock speed at which a processor runs.

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What really matters is how much work a chip can accomplish, a figure measured by the number of instructions executed per clock cycle.

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