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Staro 10.01.2019., 20:30   #5190
The Exiled
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Existing AM4 motherboards may support PCIe 4.0
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The latest news from CES has confirmed that motherboard manufacturers have already gotten PCIe 4.0 working on both 300-series and 400-series mainboards, adding the feature with experimental BIOS updates. AMD has also confirmed that PCIe 4.0 can work on existing motherboards, adding that motherboard vendors would need to validate their existing motherboards to qualify for the faster speeds. It will be up to the vendors whether or not they will support PCIe 4.0, though the upgrade will enable bandwidth increases of 2x per PCIe lane when using compatible hardware. Support will rely on two factors, firstly, whether or not each motherboard can be validated on the PCIe 4.0 specification and secondly whether or not the manufacturer is willing to enable support with the release of new BIOS updates. PCIe 4.0 support will only be possible on specific lanes of older motherboards, as trace lengths from the processor that are longer than six inches will present complications. This means that primary PCIe 16x lanes are likely to support PCIe 4.0, but others will likely only function with PCIe 3.0 support.
Izvor: OC3D
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