AMD's Ryzen 9000 Series "Granite Ridge" Processors

AMD's upcoming Ryzen 9000 series "Granite Ridge" desktop processors, based on the "Zen 5" microarchitecture, will feature improved memory overclocking capabilities. Similar to the Ryzen 7000 "Raphael," "Granite Ridge" is a chiplet-based processor that combines one or two "Zen 5" CCDs, each manufactured on the TSMC 4 nm process, with a client I/O die (cIOD) built on the 6 nm node. The cIOD of "Granite Ridge" is nearly identical to that of "Raphael" and contains the processor's DDR5 memory controllers.

With the update, Ryzen 9000 "Granite Ridge" processors are expected to support DDR5-6400 with a 1:1 ratio between the MCLK and FCLK domains. This is a slight improvement from the DDR5-6000 speed of Ryzen 7000 "Raphael" processors. AMD is said to be allowing motherboard manufacturers and prebuilt OEMs to enable a 1:2 ratio, enabling higher memory speeds like DDR5-8000. However, performance gains with memory speeds beyond DDR5-6400 @ 1:1 would start to diminish. Memory manufacturers are expected to release new DDR5 memory kits with AMD EXPO profiles for DDR5-6400.