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Hard disk data rates don seem to be pushing the limits of current ATA66 technology. Why is Serial ATA being planned now?

April 26, 2017ATA Data limits pushing rates serial Technology

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Hard disk data rates don seem to be pushing the limits of current ATA66 technology. Why is Serial ATA being planned now?

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Serial ATA is an evolutionary replacement for the Parallel ATA physical storage interface and will allow future enhancements to the computing platform. Specifically, the thinner Serial ATA cable addresses OEM’s concerns regarding airflow around the Parallel ATA cable, and enables design of smaller PC chassis, as well as silicon vendors concerns regarding 5 volt tolerance support in future designs.