gaming

AMD's Zen 6 LP cores combine multiple Zen generations and receive unique CPUID

AMD is developing low-power Zen 6 'LP' CPU cores that blend elements from Zen 2 through Zen 6 and are intended for laptops and gaming handhelds. A Linux kernel patch introduces a distinct CPUID designation and changes topology reporting and boost-scaling so LP cores use highest-performance scaling rather than a fixed CPPC ceiling. The LP cores sit alongside AMD's existing Performance and Efficiency cores and are designed to enable devices to run at only a handful of watts.

• Kernel changes mark Zen 6 LP as a distinct CPU type in /sys/kernel/debug topology and require LP cores to scale boost using amd_get_highest_perf() instead of the fixed CPPC_HIGHEST_PERFORMANCE ceiling.
• The LP core is a hybrid implementation combining Zen 6 ISA, Zen 5 microarchitecture, a Zen 4 FPU, Zen 3 L2 cache, and a Zen 2 L3 cache.
• AMD will offer Performance (regular Zen), Efficiency (compact, lower boost and smaller L3) and the new LP core types in the same product stack.
• The LP design targets low-power platforms such as laptops and gaming handhelds that need operation at only a few watts, improving battery life and thermal budgets for portable gaming.