The PCIe 4.0 standard has been defined quite precisely for some time now. However, no company has installed it yet. However, AMD now stands out as one of the first companies to adopt it. At least that’s what Raghu Nambiar, Vice President of Data Center Design Engineering, says during a Broadcom presentation. AMD intends to integrate the technology into its products at an early stage. Nambiar also has a few words to say about Broadcom’s Thor controller. Therefore, the controller must be compatible with both CPUs and GPUs.
Above all, the new technology provides significantly higher speed. For example, 1,969 MB/s are now available per lane, while only 958 MB/s are available with PCIe 3.0. Most devices do not use this speed by far.
This announcement also feeds another rumor that AMD could support the technology in the next generation of its graphics cards. Already in January 2017, the Videocardz site published a presentation slide in which it was written that Vega 20, at that time still far from its launch, would come with PCIe 4.0 support. At that time it was discarded as unlikely, but it is always likely that Vega 20 is equipped with the new PCIe standard.
The next generation of server CPU called Roma could rely on PCIe 4.0. Another presentation slide that appeared showed the PCIe generation also about the server CPUs. With this combination, AMD would be suitable for the future in the server sector. Vega 20 is expected to be released in 2018, while Roma as an Epyc processor will be released in 2019.