AMD’s upcoming Ryzen 3000 series CPUs and the accompanying 5xx series of motherboard chipsets have been rumoured to be the very first to introduce support to the PCIe 4.0 standard for interconnectivity, and now it seems to be confirmed that some present 4xx series motherboards will have the feature enabled retroactively using a BIOS upgrade. PCIe 4.0 doubles the bandwidth of their present PCIe 3.0 standard from 8GT/s (Gigatrasfers per minute ) to 16GT/s and the powerful throughput from 16GBps to 32GBps. The PCIe bus connects a computer’s CPU to its onboard components, and is most frequently used for graphics cards, SSDs, and communications devices.
This motherboard uses last year’s top-end X470 chipset and PCIe 4.0 support hasn’t yet been advertised. The shift was initially spotted with a Reddit user who posted to the r/AMD subreddit.
With this upgrade, users need to be able to gain from PCIe 4 rates when a compatible Ryzen 3000 series processor is utilized within an older X470-based motherboard. Gigabyte hasn’t declared this change officially, and no other motherboard manufacturer has done so either yet. Thanks to AMD’s promise to utilize the exact same physical Socket AM4 interface for multiple generations of Ryzen CPUs, new capacities can come to older platforms with a simple drop-in upgrade.
The change will only impact PCIe devices attached directly to the CPU. As a result of faster signalling rate and electrical complexities of this PCIe 4.0 normal, perhaps not all of PCIe or M.2 slots are going to be able to profit from the speed increase even though motherboards are capable of managing it. For this reason, PCIe may not be enabled on all previous-gen motherboards. PCIe devices which are routed via the motherboard chipset or even a downstream PCIe splitter will not have the ability to work in the higher speed.
AMD CEO Dr Lisa Su is set to address the show’s opening keynote, making a major statement very probable. Leaks of all X570-based motherboards have already confirmed native PCIe 4.0 support. It’s not understood whether lower-end models from the present and upcoming generations will support this standard.
The first consumer PCIe 4.0 apparatus likely to be declared by manufacturers are PCIe SSDs. AMD’s Radeon Instinct MI60 and MI50 already support the new standard and are all set to make the most of it. Rumours indicate that AMD’s upcoming Radeon’Navi’ graphics cards will support PCIe 4.0, and also the Radeon VII may have support announced retroactively.
The PCIe 3.0 standard was introduced using the Intel Z68 platform controller for 3rd Gen’Ivy Bridge’ Core CPUs at 2011. PCIe 4.0 support was expected for several years now. Each new version of PCIe has been backward compatible, so all current and present PCI 3.0 devices will continue to work, however they will only utilise half the bandwidth available per physical lane that they use. PCIe 4.0 will allow devices to work at their current speeds with half the range of bodily lanes or at twice the rate using the identical number of lanes.