AMD is the first company to support PCIe The 4.0 protocol is in its processor and accompanying motherboard.However, according to the latest information from a recent Gigabyte hacker, the hacker has generated a lot of new information, and AMD will Does not support PCIe 5.0 To the upcoming slot AM5 motherboard, at least not initially.
According to TechPowerUp, which obtained Gigabyte’s leaked documents, AMD decided to stay away from the PCIe 5.0 wave with the upcoming AM5 CPU socket Designed specifically for the processor code-named “Raphael”.
The figure below shows that AMD provides up to 28 PCIe channels for slot AM5. These channels run the PCIe version 4.0 protocol, which is today’s standard protocol. Of the 28 channels, 16 are dedicated to PCI Express slots for graphics expansion, 4 are for M.2 SSD, 4 are for SATA expansion, and the remaining 4 are for chipset communication with the slot.
Surprisingly, AMD lags behind Intel in the interconnect field. On yesterday’s Intel Architecture Day, the company revealed that its upcoming Alder Lake series processors will provide PCIe 5.0 connectivity. It is expected to become a competitive product of AMD’s Raphael, and it will certainly have an updated communication standard for higher-speed communication between PCIe devices.
Of course, this does not mean that Intel will force its OEMs to integrate the PCIe 5.0 standard. Just because the chip can support PCIe 5.0 does not mean that the motherboard can also support it. The newer Gen5 protocol will require thicker circuit boards to achieve better wiring and more retimers/adapters to carry speed, so the Gen5 protocol may be reserved for some higher-end products, such as Intel’s Z-level chipset.
Now is an interesting time to see how AMD and Intel are responding to the whole situation, and it is also interesting to understand why AMD chose to only support PCIe 4.0. The EPYC Genoa product line does support the Gen5 standard, so the strange thing is that it seems to separate PCs and corporate users through I/O connection options. Once the AMD Raphael processor is launched, we can expect to hear more about it.