From Webopedia:
"Often abbreviated SATA or S-ATA, an evolution of the Parallel ATA physical storage interface. Serial ATA is a serial link -- a single cable with a minimum of four wires creates a point-to-point connection between devices. Transfer rates for Serial ATA begin at 150MBps. One of the main design advantages of Serial ATA is that the thinner serial cables facilitate more efficient airflow inside a form factor and also allow for smaller chassis designs. In contrast, IDE cables used in parallel ATA systems are bulkier than Serial ATA cables and can only extend to 40cm long, while Serial ATA cables can extend up to one meter.
Serial ATA supports all ATA and ATAPI devices."
Sounds like it has a thinner cable and can be extended longer, although there are many on this board who have extended IDE cables a dozen feet or more with no ill effects.
Do you need these advantages? Are they worth $20 more to you?



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