标题PCI性能——PCI Performance

　　One of the most significant features of PCI is its 32-bit data path，which is twice the width of thd ISA data path.with a 32-bit pata path，the PCI bus can transfer more informationper second than the ISA bus with its 16-bit data path. Also，PCI operates at higher speeds of up to 33MHz. Depending on the mode of operation and computer componentsused，the PCI bus can transfer data at speeds up to 132MB per second. While many factors can reduce theoretical performance，achieving just half or a third of the PCI maximum throughput far exceeds the practical performance of the ISA bus at 4MB to 8MB per second.
　　PCI的一个最重要的特性是它的32位数据通道，这个通道是ISA数据通道宽度的两倍。有了32位数据通道，PCI总线能够比16位数据通道的ISA总线每秒钟传输更多的信息。同样，PCI能以高达33MHz的较高速度工作。根据工作模式和所使用的计算机部件，PCI总线能够以每秒钟高达132MB的速度传输数据。尽管许多因素可能降低理论上的性能，但即使获得PCI最大吞吐能力的一半或三分之一，也远远超出了ISA总线每秒4MB到8MB的实际性能。