More AMD "Strix Point" Mobile Processor Details Emerge
"Strix Point" is the codename for AMD's next-generation mobile processor succeeding the current Ryzen 7040 series "Phoenix." More details of the processor emerged thanks to "All The Watts!!" on Twitter. The CPU of "Strix Point" will be heterogenous, in that it will feature two different kinds of CPU cores, but with essentially the same ISA and IPC. It is rumored that the processor will feature 4 "Zen 5" CPU cores, and 8 "Zen 5c" cores.
Both core types feature an identical IPC, but the "Zen 5" cores can hold onto higher boost frequencies, and have a wider frequency band, than the "Zen 5c" cores. From what we can deduce from the current "Zen 4c" cores, "Zen 5c" cores aren't strictly "efficiency" cores, as they still offer the full breadth of core ISA as "Zen 5," including SMT. In its maximum configuration, "Strix Point" will hence be a 12-core/24-thread processor. The two CPU core types sit in two different CCX (CPU core complexes), the "Zen 5" CCX has 4 cores sharing a 16 MB L3 cache, while the "Zen 5c" CCX shares a 16 MB L3 cache among 8 cores. AMD will probably use a software-based solution to ensure the right kind of workload from the OS is processed by the right kind of CPU core.
Both core types feature an identical IPC, but the "Zen 5" cores can hold onto higher boost frequencies, and have a wider frequency band, than the "Zen 5c" cores. From what we can deduce from the current "Zen 4c" cores, "Zen 5c" cores aren't strictly "efficiency" cores, as they still offer the full breadth of core ISA as "Zen 5," including SMT. In its maximum configuration, "Strix Point" will hence be a 12-core/24-thread processor. The two CPU core types sit in two different CCX (CPU core complexes), the "Zen 5" CCX has 4 cores sharing a 16 MB L3 cache, while the "Zen 5c" CCX shares a 16 MB L3 cache among 8 cores. AMD will probably use a software-based solution to ensure the right kind of workload from the OS is processed by the right kind of CPU core.