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The PCIe 4.0 feature appears in the X470 motherboard's BIOS

The motherboard's manufacturers are hard at work and are preparing the X570 Series motherboard for the new Ryzen 3000 processors. These will also bring PCI Express 4.0 to the ecosystem. Interestingly, Gigabyte gave new BIOS updates for Ryzen 3000 compatibility to its (among others) X470 motherboards. And guess what the BIOS shows?

IT seems like the company has added the option for PCIe 4.0 in the latest movie update for its X470 Aorus Gaming Wi-Fi motherboard. This information was discovered by an observant Reddit user and was then verified by Tom's Hardware. Gigabyte has not yet made an official announcement about the new option.

It may be a crossover feature intended for the X570 that somehow propagated against the X470. In an update from AMD, they write:

The 300 and 400 series AM4 motherboards can support PCIe 4.0. AMD will not unlock the function, instead it is up to motherboard providers to validate and qualify the faster standard on the motherboard from case to case. The motherboard vendors that support the feature enable it through BIOS updates, but these updates will come after the vendor's own discretion. As mentioned below, support can be limited to slots based on board, switch and mux layouts.

PCIe Version Line Code Transfer Rate x1 Bandwidth x4 x8 x8 x8 1 GB / s 2 GB / s 4 GB / s 4 GB / s 4 GB / s 2.0 GB / s 8 GB / s 5 GB / s 500 MB / s 2 GB / s 4 GB / s 8 GB / s
3.0 128b / 130b 8 GT / s 984.6 MB / s 3,938 GB / s 7,877 GB / s 15754 GB / s
4,0 128b / 130b 1,969 GB / s 7,877 GB / s 15754 GB / s 31,508 GB / s

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