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PCI-SIG Expects to Ratify PCIe 4.0 This Year, PCIe 5.0 in 2019

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It is without question that PCIe is one of the most important technologies in modern computers as so much is run through this interface, from graphics to storage, networking, and more. As important as it is though, the current PCIe 3.0 standard has been out since 2010, much longer than the 4-year update cycle PCI-SIG, the organization that defines the standard, had previously tried to keep. To remedy the delay, PCI-SIG has apparently decided to accelerate the development and deployment of both PCIe 4.0 and PCIe 5.0, according to Tom's Hardware.

The plan is apparently to have the PCIe 4.0 standard defined by the end of the year. It is currently at revision 0.9, which some vendors are using to start developing products ready for the 1.0 release. Already vendors are offering 16 GT/s (gigatransfers per second) controllers, which is double what PCIe 3.0 offers, and putting PCIe 4.0 PHYs into their products.

It would appear PCIe 4.0 will be somewhat short lived though, as the target is for PCIe 5.0 to be ratified in 2019, and it will double what PCIe 4.0 offers. According to Tom's Hardware though, AMD is targeting PCIe 4.0 support for 2020, but with the plan now being for PCIe 5.0 to be ratified before then, perhaps this plan will change. Intel is being more tightlipped about its timeline, but it is hard to imagine it is not also deeply interested in moving to the next standard.

Source: Tom's Hardware



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Isn't it useful if you are running alot of video cards and harddrives?

Lots of anything. I'm annoyed it's taken this long, I have been limited on PCIe lanes / bandwidth for years on server builds.

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Damn I just now got 3.0 ..

Only 8X PCIE 3.0 is over saturated for gaming. And that is only with a 1080Ti  @ 4k. Unless you are running Raid cards, 16X is good for another 3-4 years.

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Damn I just now got 3.0 ..

Only 8X PCIE 3.0 is over saturated for gaming. And that is only with a 1080Ti @ 4k. Unless you are running Raid cards, 16X is good for another 3-4 years.
Gaming isn't what's driving new PCIe speeds, but it'll benefit all the same. Cheaper motherboards, cheaper cards, cheaper CPUs, etc.

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