Compared to ARM, Intel has the additional problem that their Atom descendant little cores don't implement the full instruction/feature set of the big cores. Tha

Compared to ARM, Intel has the additional problem that their Atom descendant little cores don't implement the full instruction/feature set of the big cores. That could be because the full set is (power/die-size wise) expensive, or because of market segmentation strategy, but it probably makes an Intel big.LITTLE far less straightforward than ARM. (https://overclock3d.net/news/cpu_mainboard/intel_s_hybrid_big_core_little_core_strategy_could_be_a_disaster_for_alder_lake_suggests_leak/1 https://overclock3d.net/news/cpu_mainboard/intel_s_hybrid_bi...)