AMD is preparing to launch the AM5 socket, which it will use with the new generation 600 series motherboards yellow and Ryzen 7000 processors. According to new leaks, only DDR5 memory support will be offered with the B650 and X670 chipset series.
This is bad news for end-users as users with existing DDR4 memory will not be able to upgrade smoothly. We have no information about the integrated memory controller that will be used in the Zen 4 architecture. As you know, Intel’s Alder Lake processors offer both DDR4 and DDR5 memory support. We will see support from AMD in time, but it seems that at least the B650 and X670 motherboards will not support the DDR4 standard.
On the other hand, the B650 chipset is connected to the AM5 socket via PCIe 4.0 x4 interface and it has eight PCIe 4.0 (four for M.2 SSDs), four SATA and multiple Confirmed to have a large number of USB ports. The documents that have surfaced show that chipset-to-socket connectivity with PCIe 5.0 can be used for some AM5 processors. But we’ll have to wait for AMD’s official announcement and see how the memory system works.
The high-end X670 chipset series is likely a combination of two B650 chipsets. This solution doesn’t work like the old north/south bridge and we can think of double the connections on a single B650 chipset.