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What is the difference between PIO mode 3 and PIO mode 4?

April 26, 2017difference mode PIO

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What is the difference between PIO mode 3 and PIO mode 4?

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PIO mode 3 and PIO mode 4, by reducing the IDE cycle time and reducing the IDE HDD memory cycle, increase the IDE data transfer rate and, therefore, enhance system performance. With this new approach, the traditional transfer rate, which is 3.33 Mbps (Mode 0), can be increased to 11.11 Mbps (PIO Mode 3) and 16.67 Mbps (PIO Mode 4).