AMD earlier today announced the Ryzen AI 400 series desktop APUs in the Socket AM5 package. These are the company's second desktop APU generation on Socket AM5 following the Ryzen 8000G series "Phoenix Point." While "Phoenix Point" is based on "Zen 4," the newer Ryzen AI 400 series is built on the "Gorgon Point" silicon powered by the "Zen 5" microarchitecture. A key difference between the two APU generations is the emphasis on AI performance. "Gorgon Point" packs an XDNA 2 NPU with 50 TOPS of throughput on tap, making Ryzen AI 400 series the first socketed desktop processor that meets Microsoft Copilot+ requirements.

While "Phoenix Point" featured a single CCX design with up to eight full-sized "Zen 4" cores, "Gorgon Point" reverts to a dual-CCX design for its CPU complex. The first CCX features four full-sized "Zen 5" cores that can boost up to the maximum rated speed of the APU model, along with 16 MB of L3 cache that's shared among the four "Zen 5" cores. The second CCX features four compacted "Zen 5c" cores, with an 8 MB L3 cache shared among them. "Zen 5c" is a physically compacted version of "Zen 5," it has an identical IPC and ISA, but it caps out at roughly two-thirds the maximum boost frequency of the full-sized "Zen 5" cores. For threads to migrate between the two CCX, their instructions and data make a trip through the chip's Infinity Fabric interconnect, just like it was during the old "Zen 2" architecture days.