Most surprising to me was the 502.gcc_r result which barely saw any improvement with the added 8 E-cores. Workloads that are more cache-heavy, or rely on memory bandwidth, both shared resources on the chip, don’t scale too well at the top-end of things when adding the 8 E-cores. Many of the more core-bound workloads appear to very much enjoy just having more cores added to the suite, and these are also the workloads that have the largest gains in terms of gaining performance when we add 8 E-cores on top of the 8P2T results. In the integer suite, the E-cores are quite powerful, reaching scores of around 50% of the 8P2T results, or more. The results here were done on Linux due to easier way to set affinities to the various cores, and they’re not completely comparable to the WSL results on the previous page, however should be within small margins of error for most tests. The results here solely cover the i9-12900K and various combinations of MT performance, such as 8 E-cores, 8 P-cores with 1T as well as 2T, and the full 24T 8P2T+8E scenario. We're posting the detailed scores for the DDR5 results, following up the aggregate results for DDR4 as well. We’ve finished our MT breakdown for the platform, investigating the various combination of cores and memory configurations for Alder Lake and the i9-12900K. CPU Tests: SPEC MT Performance - P and E-Core Scaling
