AMD adds support for PCIe 4.0 in its Linux drivers
With its specifications already published since 2017, the PCI Express 4.0 standard it is intended to be the replacement for the current PCIe 3.0 doubling your bandwidth and increasing its capacity to deliver power up to 300W with specific peaks of 500W in a PCIe x16 port.
By doubling the bandwidth, it will be possible to achieve the same performance as with PCIe 3.0 using half the lines, in addition, the greater energy capacity makes it possible to dispense with the extra power connector in graphics that do not have too high energy requirements.
At the moment the first motherboards and components with support for this technology have not yet arrived, but it seems that it is getting closer and it would not be unreasonable to think that the next generations of graphics cards and motherboards already integrate support for PCIe 4.0.
One of the “clues” that reveal this path has been found in computerbase investigating the latest version of AMD drivers for Linux. In them appears a line of code where the support for links is defined PCI Express Gen 4 or PCIe 4.0.
These drivers do not refer to any specific model, but the addition shows AMD’s intentions to support this new connector from the moment it is available, something that could happen sooner rather than later. In fact, the next AMD Vega 20 at 7 nanometers is expected to already support PCIe Gen4 series.