The next version of the PCI Express standard promises to raise the data transmission rate up to 16 Gbit / s per line - two-fold greater than provides PCI Express 3.0. A year ago, it was believed that the PCI Express 4.0 specification will be approved in the current year or the next, but last month the resource EE Times reported that the original version of the PCI Express 4.0 is unlikely to be adopted before the beginning of 2017. In any case, the preliminary specifications will be approved only by the end of this year, and the development of a full version of the standard will take more time than is the case with previous versions of PCI Express.
The developers claim that the PCI Express 4.0 with increased up to 16 Gb / s data transfer rate will be the last version of the interface that uses copper conductors. Spacing devices from each other without the use of active elements will be possible at a distance of no more than seven inches (175 mm). Interface PCI Express 4.0 will use a new connector that will be compatible with previous devices generations . Subsequent PCI Express version should be used optical communication channels or similar bandwidth Alternatively, according to representatives of PCI-SIG. Until now, prevented the implementation of the high cost optical and technical obstacles have been much less.
This autumn will be approved standard OcuLink, using four lines PCI Express 3.0 to send information to external devices at speeds up to 32 Gbit / s. It is expected that this interface will compete with Thunderbolt, and after approval of the PCI Express 4.0 specification will be able to double the capacity. Related Products :
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