Transfer speeds
With connection directly to the PCI bus, EIDE has transfer speeds and disk capacities which far exceed
the older controller principles. EIDE exists in different editions, such as PIO 3, PIO 4 and Ultra DMA. The
latter is the one to choose. The different PIO modes are significant for transfer speed. PIO 3 can transfer
up to 13 MB/sec, while PIO 4 promises 16.6 MB/sec. UDMA promises up to smashing 33 MB/sec. These
numbers are theoretical and they do not hold true in actual use. The fastest actual transfer speed you can
experience from an EIDE disk will be 5-10 MB/sec. That is still good.
With connection directly to the PCI bus, EIDE has transfer speeds and disk capacities which far exceed
the older controller principles. EIDE exists in different editions, such as PIO 3, PIO 4 and Ultra DMA. The
latter is the one to choose. The different PIO modes are significant for transfer speed. PIO 3 can transfer
up to 13 MB/sec, while PIO 4 promises 16.6 MB/sec. UDMA promises up to smashing 33 MB/sec. These
numbers are theoretical and they do not hold true in actual use. The fastest actual transfer speed you can
experience from an EIDE disk will be 5-10 MB/sec. That is still good.
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