There's no doubt that Serial ATA storage is hitting a wall when even mainstream PCs like the
MacBook Air and
VAIO Pro use the PCI Express interface to get around performance bottlenecks. It's a good thing that SATA-IO just ratified the improved SATA 3.2 specification, then. The new standard centers on
SATA Express, which lets SATA storage ride on the PCIe bus and more than doubles the available bandwidth to 16Gbps (2GB/s). Version 3.2 also brings support for the
M.2 format, giving Ultrabooks and tablets access to SATA Express in a tiny form factor. We're already getting a peek at what the new spec can do when M.2-based PCIe drives offer comparable performance, but SATA 3.2's ratification should bring that kind of speed to many more PCs in the future.
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Source: SATA-IO
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