PCI Express 4.0 bus announcement (up to 32 GB / s in slot x16)
The PCI SIG organization announced the PCI Express (PCIe) 4.0 computer bus standard, which will provide a record bandwidth of 16 gigatransfers per second per line, which is twice the maximum PCIe 3.0 bus speed.
16 GT / s corresponds to a speed of about 2 GB / s per line x1, that is, a video card in slot x16 can transfer a stream of up to 32 GB / s over a PCIe 4.0 bus. Probably, this speed will be enough for peripheral devices for the next decade.
Preliminary technical analysis showed that PCIe 4.0 production will be possible on current equipment with existing materials and will not require the introduction of a new process technology, and the devices themselves will retain approximately the same level of power consumption as PCIe 3.0. PCIe 4.0 devices and connectors will be backward compatible with previous bus versions.
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The announcement of PCIe 4.0 took place long before the first PCIe 3.0 devices appeared on the market, this is expected only in 2012. The final PCIe 4.0 specifications will be released no earlier than 2014 or 2015.
16 GT / s corresponds to a speed of about 2 GB / s per line x1, that is, a video card in slot x16 can transfer a stream of up to 32 GB / s over a PCIe 4.0 bus. Probably, this speed will be enough for peripheral devices for the next decade.
Preliminary technical analysis showed that PCIe 4.0 production will be possible on current equipment with existing materials and will not require the introduction of a new process technology, and the devices themselves will retain approximately the same level of power consumption as PCIe 3.0. PCIe 4.0 devices and connectors will be backward compatible with previous bus versions.
')
The announcement of PCIe 4.0 took place long before the first PCIe 3.0 devices appeared on the market, this is expected only in 2012. The final PCIe 4.0 specifications will be released no earlier than 2014 or 2015.
Source: https://habr.com/ru/post/134608/
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