Overclocker Toppc posted a screenshot showing how Ryzen 7000 processor works with DDR5-6400 memory.
The memory did not have the highest latency CL-32-38-40-96-134. It is unclear if these are indicators of memory use or if they are the result of overclocking.
The new AMD CPUs are capable of working with this memory. This is a good thing in and of itself. According to the company, the Ryzen 7000 will be focusing on memory speed. This is important because all new generation desktop processors will include an integrated GPU. Its speed is dependent on the memory frequency.
Remember that Ryzen 7000 only works with DDR5, so you should consider this before purchasing a new platform.