An Intel 12th Gen Core "Alder Lake-P" sample surfaced on the Geekbench online results database. The "Alder Lake" microarchitecture introduces heterogenous multi-core to the desktop platform, following its long march from Arm big.LITTLE in 2013, through to laptops with Intel's "Lakefield" in 2019. Intel will build both desktop- and mobile processors using the microarchitecture. The concept is unchanged from big.LITTLE. A processor has two kinds of cores—performance and low-power. Under lower processing loads, the low-power cores are engaged, and the performance cores are only woken up as needed. In theory, this brings about tremendous energy-efficiency gains, as the low-power cores operate within a much higher performance/Watt band than the high-performance cores.

The "Alder Lake" silicon features two kinds of cores—eight "Golden Cove" performance cores, and eight "Gracemont" low-power cores. The "Golden Cove" cores can be configured with HyperThreading (2 logical processors per core). Intel's product managers can create multiple combinations of performance and low-power cores, to achieve total core counts of up to 16, and logical processor counts of up to 24. This also warrants close attention to the composition of the core types, beyond an abstract core-count. A 14-core processor with 6 performance- and 8 low-power cores will perform vastly different from a 14-core processor with 8 performance- and 6 low-power cores. One way to derive core counts is by paying attention to the logical processor (thread) counts, as only the performance "Golden Cove" cores support HTT. Read full story