AMD’s upcoming Ryzen 3000 series CPUs and the accompanying 5xx set of motherboard chipsets are rumoured to be the very first to present support to the PCIe 4.0 benchmark for interconnectivity, and now it appears to be verified that some present 4xx series motherboards will have the feature enabled retroactively with a BIOS upgrade. PCIe 4.0 doubles the bandwidth of their present PCIe 3.0 regular from 8GT/s (Gigatrasfers per second) to 16GT/s and the powerful throughput from 16GBps into 32GBps. The PCIe bus connects a computer’s CPU to its onboard elements, and is most frequently used for graphics cards, SSDs, and communications devices.
This motherboard uses the past year’s top-end X470 chipset and PCIe 4.0 support hasn’t been advertised. The change was initially seen by a Reddit user who submitted to the r/AMD subreddit.
With this upgrade, users should be able to gain from PCIe 4 speeds when a compatible Ryzen 3000 series processor is utilized within an older X470-based motherboard. Gigabyte has not announced this shift officially, and no other motherboard maker has done so either yet. As a result of AMD’s promise to utilize the same physical Socket AM4 port to get multiple generations of Ryzen CPUs, new capacities can come to old platforms using an easy drop-in upgrade.
The change is only going to impact PCIe devices connected directly to the CPU. As a result of faster signalling rate and electric complexities of this PCIe 4.0 standard, not all PCIe or even M.2 slots are going to have the ability to profit from the speed increase even though motherboards are capable of handling it. Because of this, PCIe may not be allowed on all previous-gen motherboards. PCIe devices which are routed via the motherboard chipset or even a downstream PCIe splitter will not be able to work in the higher rate.
Leaks of X570-based motherboards have already confirmed native PCIe 4.0 support. It’s not known whether lower-end models from the current and forthcoming generations will support that standard.
The first consumer PCIe 4.0 devices 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 suggest that AMD’s forthcoming 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 released using the Intel Z68 platform controller for 3rd Gen’Ivy Bridge’ Core CPUs at 2011. PCIe 4.0 support was expected for several decades now. Each new version of PCIe has been backward compatible, so all current and existing PCI 3.0 apparatus will continue to work, but they will only use half of the bandwidth available per physical lane that they use. PCIe 4.0 will allow devices to operate at their current rates with half of the number of bodily lanes or at theoretically twice the rate using the same number of lanes.